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WinEEG User Manual - Bio-Medical Instruments, Inc.

1. Press a button to select an appropriate line style 90 Graphics Page Format List dialog Choose a format from list Graphics page formats list Cancel 91 Parameters Of Graphics dialog Rectangle Enter graph size and coordinates of its upper left corner relatively to the upper left corner of the page If the graph size exceeds page dimensions they page dimensions will be increased Channel Select a channel to be depicted Waveforms Choose a trial group to be depicted by each of curves on the graph up to four groups can be depicted and define whethera statistical significance histogram 15 to be shown for the group 230 Parameters of graphics Rectangle Lett mm Tap mm 4 width Heightimmk 9000 Channel Waveforms Group algnificance 1 Dont show m pe Dontshow v Cancel Attention If you are modifying parameters for several graphs simultaneously only newly entered parameter values will be changed For example you can select all graphs the table and modify their sizes the remaining parameters will be unchanged 92 Biofeedback Parameters dialog Biofeedback parameters Audio source Turm off C Audio CD player mp3 format C List of wave files AV lt 3 way eg
2. 103 52 View Toolbar gt Averaging Groups Bar command 103 53 View Toolbar gt Customize Main Toolbar 105 54 View Toolbar gt Customize Input Control Toolbar esee 104 55 View Toolbar gt Customize Analysis Toolbar command esses eene essen nnne sene rrr eese 104 20 View TITANS TP RETI D Rw 104 24 Mew Channel Names Bar COMM ONG UE 104 DO VIEWS VideO Window CON OW sees se eere p I 104 29 Video WINDOW SIZE COMMGNG enero E EUR 104 VIEW Decrease Gan ART 104 VIEW dncrease Qui COMMON e ete in s bra 105 2 Decrease Speed COMMANG RETErE 105 03 VIEWS Increase Speed COMMMOANG suse heremo pecie sto op ERE ort de bis isi deciwrutd iex nec EEE 105 04 View Select gMOBIISE COMI 105
3. 28 EVENT RELATED EEG DESYNCHRONIZATION AND 29 WAVELET ERP AND WAVELET COHERENCE ANALYSIS 30 RECORDING AND ANALYSIS ERP ERD ERCOH WAVELET POWER AND WAVELET COHERENCE 30 EQUIPMENT PREPARATION FOR PERFORMING ERP STUDIES 0 1 eee ee ee ese eei ee ese eese sess 30 I Preparation Of stimuli presentation x i sce ea co euo yx desta pese d dues cade to a UR awe 30 2 Installation and preparation PSY 21 o Jestmngahe n E E ER AEN EE 31 CARRYING OUPOPBERPE SEUDIBS 32 COMPUTING AND ANALYSIS ERP ERD OR 1 1 1 161 tenent sek esas seite sess 33 VIDEO EEG RECORDEENG 1 d Uo po VH NER 34 EXPORT AND IMPORT THE DATA voe Ve erase SL voa ye Sepa go s
4. 238 LOIT Saas 238 Meus EE E NATE E uu MI Denm 238 Fae ECV NCAT ORCL CEO def 239 4 Exampleor a dierarchicatcMenui ProPTIlls t S viet M 241 ME EUIS ISCRITTO TROP 242 Main Features WinEEG software was developed for the Mitsar EEG 201 electroencephalograph photodiode and impulse photostimulator It performs electroencephalogram EEG monitoring processing and analysis Video signal from camera connected to the computer can be recorded synchronously with EEG for video EEG monitoring EEG can be recorded synchronously with the presentation of visual and acoustic stimuli for ERP ERD studies WinEEG 1s designed for the IBM PC and MS Windows 95 which together define minimal system requirements But the program performance significantly depends on capabilities of the computer Here are recommended configurations Minimal if you are financially restricted CPU Pentium 133 RAM 16 Mb HDD Gb IDE Video Adapter SVGA 1 Mb Monitor 4 15 CD ROM 40 x Printer HP DJ 670 inkjet color A4 There are no warranties that all functions of WinEEG program will work properly Optimal to work efficiently with EEG or E
5. v Use as default To calculate ERCoh additional information on stimuli presentation structure in each trial 15 used together with source data To group trials by stimuli types or by response task trial labels are used These parameters are defined beforehand when creating editing stimuli presentation protocols by means of PSYTASK program installed on the presenting computer Many fields of this dialog are similar to those of Parameters for Event Related Potential Computation dialog So only additional fields are described below Channel List Define a list of channel pairs to be processed not more than 24 pairs Frequency This group defines harmonic signal frequency for which the EEG event related coherence will be calculated Epoch sets width of sliding window used for ERCoh calculation Frequency defines the harmonic 194 60 Wavelet Decomposition dialog To perform wavelet decomposition additional information on stimuli presentation structure in each trial is used together with source data To group trials by stimuli types or by response task trial labels are used These parameters are defined beforehand when creating editing stimuli presentation protocols by means of PSYTASK program installed on the presenting computer Wavelet decomposition X Groups of trials Mame Labels Correct Incorrect Artifact c enn Sumi I
6. 117 EEE EEE E 117 127 Analysis Average sco eth rto eis EVE SA RAS CV Usa eV NH PUE Sa tH DM CU RES 116 126 Analysis Spectra Dynamics command sc c th ER EE E WS CU EUER STEIN IG UI AEE ARR 116 129 Analysis Parameters of interaction diagrams 116 190 Analysis Insert tables into TOBOFIU a co ER ER 116 131 Pop up Menu of Spectra Window Add Map n nnne nennen esses sss nnns 116 132 Analysis Channels GLOUDS command oic cette 116 793 Analysts Gronps C hannels command 118 134 Analysis Time Groups Mapping 5 8 nnns 119 135 Analysis Groups Time Mapping 7 119 130 Analysis ise eec 119 137 Analysis Average Bandpower COmmafid ue ENS 119 PEANO NNS Rasters Inne Freouency CONO 119 139 E Channel CONAN tei cis tial ea dde 119 TATARO NSE GTOUD TIO s CORTOS s 120 141 Pop up menu of ERP window Add comm
7. 145 QUA OO 145 D QUI BIS d oru Hem 147 PII I T Hm 146 JO NOTE ICE CIID GIG OC ast icu co ON taxa OMIM 149 20 Export wavelet bandpower coherence 4 152 OTE DOA OVI 153 DZ ENPO CCIE E CUM N 155 LOS XD OV EEG Tdi COSCO reste ahi AG ta 157 LIE 158 E E G GAl O MA I LM M ALME 159 DO FIELA TEPORE ESTHER 160 n AURO G MEI LIMIT ME 161 ACC 110 M 161 162 20 mil Presematuon Ual OO dun ae bete does 163 oT Update task list rom slave computer CUu 164 52 ELECT OES RU x aede al taa dod eal ua sooo Ee 165 3o Callbration Of Amp ers dial guae temet t cive dudu
8. ete 20 DS OMPOSING ZL FINAL REPODE s E seti sur a toe d unt ceteros 2l 6 PRINTING EEG FRAGMENTS PROCESSING RESULTS AND REPORT 0 0 0 0 0 ener sena 21 7 MAINTAINING EEG DATABASE AND PROCESSING 6 15 0 00000000000000000000000000 21 2 21 DATA ARCHIVING 22 DIGITAR WEG RUE PE RUN 23 ELECTROOCULOGRAPHIC ARTIFACTS CORRECT ION ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccecs 24 CORRECTION OF EEG AR TS iiec cc oia 25 AUTOMATIC AND MANUAL ARTIFACTS ELDMINA TION cccccccccccsccccccccccccccccccccccccccccccccccccccccccscccccccccees 25 des 26 EEG POWER SPECTRA 27 EVENT RELATED POTENTIALS
9. ade 95 3 File Open Another Database gt EEG Spectra 95 4 File Open Another Database EEG Crosscorrelations command cesses seen eese nnn esses 95 5 Fil Open Another Databases Indices command eut emu testante o d e 95 6 File Open Another Database 5 ERP EP File command 95 Open Another Databases FERD File COMMIONG cennere i i dean puo 96 Jule Open Another Database gt ERCON File command vehe ae 96 9 File Open Another Database gt Biofeedback File 96 ITO QUU DUST OB QT Tm 96 Dl FUE AION Data COMMIAIIG stu Uta diat cud 96 CHOSE COMMANA gt 96 LI OVC COMMA e orta dt 97 PaT CONPIDITO e 97 TOC COmNpDress video TUES COMMING bee tad st de ues 97 TO Tales EXDOFH DOG cue AEE 97 Iles Export EEG and Video LEG vc command ac ERR 9
10. 109 CPI 109 83 Recording Fast Forward 109 84 Analysis Final Report 4 HW o EO VP HH E HEIN HD eU e 109 85 Analysis Signal Parameters command assai se estes 109 86 Analysis EEG Mapping COMMA sc as use a o epi ed UR Pe a rH US HIR DM e 109 EG TRHOICO COTON 110 SOc TANGY SUS EL G SPE Aee 110 99 ANG ysis LEG CFTOSSCOFFelQfIOW COMMON ie eee ee ERU MU aee 111 90 Analysis Spectra Density command ies NM o e Ree 111 91 Analysis Source distribution LORETA command 111 92 Analysis Spectra power distribution LORETA command isses 111 93 111 94 Analysis ANGI YSI Sres iae 111 JANAIS S DIK eG isa 111 ANGINSTS SPIKE a CONAN Ee ue 112 97 AnaS S Remove LO GO c COMMOANG
11. 34 Find dialog Find Fiad what osc Ft Match whole word only Cancel Match case Gain zen Biol po Bf arfi Biod fi Bio fi fl Bo fl Bio fo Bg fi x Find What Defines the string to be searched for Match Whole Word Only Check to find only whole words matching the Find What string Match Case Extends search criteria to include uppercase and lowercase attributes while searching for the Find What string in the text Find Next Find next string matching the Find What one 167 35 Find Events Findevents Find next Threshold 100 MKE Cancel Channel The following options allow you to specify parameters of searching Events when the absolute voltage of EEG signal is higher then defined threshold If selected channel is digital channel the voltage threshold is not used Channel Select processed channel Threshold Select voltage threshold Find Next Find next time interval of EEG record when absolute voltage of EEG signal of selected channel was higher then defined threshold and display EEG waveforms in EEG window 36 Replace dialog Find What Defines the string to be searched for Replace With Defines the string to replace the one found Replace Find what Heplace with Match whole ward only Cancel Match case Match Whole Wo
12. 85 TDs Averd o 86 JAL LC Ly DOT 86 DO VACO WINGOW saat 87 MENU COMMANDS 88 EAC IODIR N DD UMP OO MQ 88 Edt Memu METH 88 VW Jen CODI Sue sueta 89 Torma Ment C oHm 89 ReCOFQUIP E E T 89 90 SEMP Mnu COMMING 92 eomm llds east 92 93 DESCRIPTION OF MENU C OMMANDS EE 94 DAN NCW CONNAN CH 94 OpenT EG D tabasecommalld
13. AyWw Tu mm E n TIBET lag or 1 BI m ee E px Em For Help press F1 L 35 3 R 35 3 T R L 0 000 5 R L 0 4 60 27 Scalp potentials maps Scalp potentials maps are displaying automatically in Maps window for selected by vertical markers time samples 50 0 nv 50 0 ny 28 Dipole source localization The dipole source localization 15 performed automatically for selected by vertical markers time samples The results of dipole source localization are displayed in Dipole window QEA RRE 0 069 ECC 1 00000 RRE 0 118 ECC 0 23795 Copy Parameters 61 2 Biofeedback Window This window 15 used in investigations and training with biofeedback The main biofeedback principle is the following a certain parameter of the patient state 15 calculated during EEG acquisition in real time and displayed on the screen by means of some graphic object A patient viewing the parameter dynamics is trying to change them according to the task given by the clinician For example the doctor wishes to train the patient to relax but the latter does not realize how to perform such a task To help the patient alpha rhythm power is monitored as a relaxation level indicator The patient should try to sustain the parameter value as high as possible with mental effort After several training sessions the patient learns to control and to improve his her own state of health
14. OF xj 04 55 25 Working Made Monitoring Setup Relaxation Training Window Made Waveforms Bar Bar 2 Sengetivity Middle 0 80 Minimum oo Refresh ms E 0 80 100 200 Artefacts 200 Welta ve Ale Biete L Delta ce e e lf e e Betas oe t Garin L L In image Sensitivity Artifacts Alpha On the right side of the window there is the Biofeedback bar and at the bottom there is the Calculator bar Both bars are used to choose a biofeedback parameter to set biofeedback sensitivity and inertness and to manage the window during investigation The biofeedback window has three operating modes Mode 1 Biofeedback parameter dynamics analysis mode The window graphically displays the biofeedback parameter dynamics recorded in mode 2 or 3 or read from the database 62 Use Edit gt Copy command to a biofeedback parameter dynamics graph to clipboard The graph can then be inserted into the text of a WinEEG final report or into any application window WinWord Paint etc by means of Edit Paste command Use File gt Save command to save a biofeedback parameter dynamics file in the database Mode 2 EEG acquisition and dynamics control mode In this mode the window is split into two panes the top pane displays t
15. 30 m Investigation 4 4 400 10 v Patient name 5 Address 240 11 2 Patient ID Cancel Ampy Help Position Set position ordinal number for each field used in the record list 74 Database Parameters Base Record Search Parameters dialog This dialog allows selection of criteria for record filtering In other words only records satisfying the defined search conditions would be displayed in the results list and the others would be ignored The criteria set is saved and then used any time when the Record List dialog is opened This logic facilitates repetitive seraches over a certain subset of the database records for example only with data acquired during last month But it may also cause mistakes and complications when looking for data If you find that some records have suddenly disappeared from the database first of all check the search criteria 214 Each edit box the Base Record Search Parameters dialog defines one search criterion record satisfies search conditions if it contains all features that have been defined Blank fields are ignored during search is the list of search criteria that can be defined ID field contains a text string that must be present in the corresponding field of the database record If the text defined for search is shorter than in the database a substring is searched Symbol case is ignored Blank spaces before and after
16. WinSpci Battaglia Gianna 3 3 gt 4 64 0 Hz Ww Statictics 7 20 None 27 4 80 Channel 2 40 1 02 Avw 10 20 5 10 20 4 b v Deta Teta 0 Alfa 0 0 Beta2 Gamm 0 O L1 O O O O 0 O O Deta 0 Teta 0 Betal Beta 0 Gamm 0 L1 L1 0 O 0 O L1 O 0 The results of EEG power spectral analysis be presented in seven window modes that are selected by commands available on the Analysis menu Graphs Power spectra auto and crosscorrelation are shown as graphs for each separate channel For the Spectral Dynamics display mode spectra for each epoch are superposed with a small vertical shift Histograms Total signal power for given EEG bandranges 15 depicted as a histogram for each separate channel Disabled for auto and crosscorrelation Table For EEG power spectra absolute or related percent of spectral power and the frequency of signal maximum for given EEG bandranges are listed in the table For EEG coherence average coherence and the frequency of signal maximum for given EEG bandranges are listed in the table For EEG autocorrelations minimal lag value which autocorrelation function cross zero and corresponding to lag frequency are listed in the table For EEG crosscorrelations value of fi
17. Bo rn Group differences E 4 3 6 5 Choose Artifact processing Synchronisation Subject responce processing Level 100 M Type i eve Mp Stimulus Defined Channels Ont EEG Stimulus t1 Threshold for channels Button channel No Time interval before ms lo Time interval after ms jo Frequence fram 40Hz Frequence to 40 0He gt Shep 100 Wavelet width cycles Substract ERP from raw EEG Smoothing 5 Use as default 1002 OF Cancel Many fields of this dialog are similar to those of Parameters for Event Related Potential Computation dialog So only the additional fields are described below Frequency From Frequency To Choose two values defining frequency range for wavelet decomposition Step Choose step for calculations within a certain frequency range Wavelet Width Choose wavelet width in the time domain Wavelet width can be set in absolute units ms or in cycles Cycles mean different absolute wavelet width for each frequency On the other hand in this case resolution will change proportionally for time and frequency domains Special papers recommend the value of 5 cycles for this parameter But each case may require a different specific value for this parameter Smoothing 195 This parameter 15 set in time readouts and defines filter sliding average width for ERD curv
18. DIAA Oe 1 Play Fpi As TE Fpl Avw 02 49 Fp2 Avw Fp2 Aw FAVA Foe Fak Fp2 hvw PA Fpz Avw Fea FB A vw T4 Aw TER TEM Add Delete Crosecorrelation levels First level Coherence differencies levels First level 0 05 Second level 0 1 Coherence levels First level Second level Second level 0 8 Third level Third level 0 05 I Third level EH Fourth level Fourth level Fourth level mel Channel pairs of file list of existing channel pairs Select channel pairs that will be added into one of tree channel pairs list First list Second list and Third list Three independent lists of channel pairs Not used All pairs and Selected pairs radio buttons defines using mode if each channel pairs list Add buttons Press this button to add selected in left list pairs into corresponding list of pairs Delete button Press this button to delete selected pairs from corresponding list of pairs 201 Three sets of buttons and fields Coherence levels Coherence differences levels and Crosscorrelation levels helps to define thresholds curves style and curves colors using by interaction diagrams displaying procedure 68 Processing results comparison dialog Processing results comparison
19. Names 122 D aber DS CD Sei i dea ettet fet tee uelit dde tulit de 122 setup Photostunulatonm PROSFQIS os dee uiu dei rabo cute Slut udi de 122 1239 Setup Bandan eS CONNAN a catus 122 LOU Setup Presentation F FOCTOIMNS 1 122 TOI Sez Graph Formats COMMA ss Ta pet oet Tritus du dept o DU 122 102 Setup Biofeedback Parameters command oie e e b NT Orb stu ape ys 123 HP OM BOTE COMAN D RU 123 164 Setup Fma Report RETE UU TT 123 105 Setup r mal Report Templates sicui otoltm uo e HE ado eei Ned Mad ao 123 Video recordin sexo Mae io A 123 107 58fuD Eg pment Parameters command suede SUR eeu E lu 123 LOG AWINGOW Cascade COMMMONG rae UM MN C ue 123 T69 Window Tiue Horizontalby commandes esu nec 123 770 Windows Tue Verticalby Condidit du EI TE Om 124 Window AVIAN C1 CONS CONMMGNG eiecit Pa E Uo aco o EE Tu CENE 124 172 WINGO
20. 127 T Montage Parameters Pattent eet e ires Pac oai d et EENE ENEE eo vis ple desa T2 2 Montage Eve ne 128 3 Parameters Referents didlo Doce titration tu MEH 151 4 Montage Parameters Colors dialo HEBES 132 Parameters View dialo seirinin E UB UH RE IU DIM tU Setia CU ese eI UO Ma SUUS 133 Montage Parameters Electrodes dialog esses eene 134 7 Transformation Matrix for Weighted Average Referent dialog 222222222 0000000000000000000 1 nennen nennen nene 136 Oo dec COP CULTO tue Stetit ORUM EI LM SS 136 I Batch EROSEFOGOSSU P TIG asa duh 140 TOLZAVORQPINPASDEOTEOATIQIO US ois at ot ius 141 OS sie ees ees eee Medos pe UN eR Eco RE 141 IZ BACKUP Data d0 oe sera 143 144 Dde Trom Dalabase 144 ct
21. Use Filters bar to modify paper speed montage sensitivity and bandwidth To stop EEG acquisition run Recording Stop command Shortcut Input Control toolbar LP 68 Recording EEG Recording on off command Use this command to start recording EEG fragment to hard disk The command is available only if a new EEG window 15 opened see File New command To stop recording the fragment and to resume EEG monitoring mode run this command once more Use Filters bar to modify paper speed montage gain and bandwidth To stop EEG recording run Recording Stop command Shortcuts Input Control toolbar ON Keys Enter F2 F3 F4 F5 F6 F7 F8 F9 F10 or F11 69 Recording Pause command Pauses EEG acquisition monitoring and recording The ensuing EEG fragment will be absent in the record The command is available only if a new EEG window is opened see File New command To resume EEG acquisition and monitoring or recording use the Recording EEG Monitoring command 107 Shortcut Input Control toolbar m 70 Recording Stop command Stops EEG acquisition monitoring and recording or EEG window scrolling and switches to EEG view mode see EEG Window The command is available only if a new EEG window is opened see File New command Before new file is saved in the database EEG monitoring and recording can be resumed by running Recording EEG Monitoring and Recording EE
22. ms sets the end of the interval to export in relation to the starting point 150 Step sets sampling interval for the exported data If the Step value exceeds sampling interval for source data adjacent readouts are averaged Format Choose format for ERP export If you choose the Channels In Line option ERP data will be written as follows 1 2 Ch 1 2 Ch 1 Ch Gr1 Gr 1 M Gr2 Gr2 M Gr M Gr 1 Gr 2 K Gr K IRI D b TR2 D D Eoo ood poo D D D D D D D If you choose Time Samples In Line option ERP data will be written as follows TR IRN 1 2 Ch1Grl D D Ch2Gr1 DP pps pec eem 2 LET Ch M Gr D D D K Here TR X are time readouts Ch X channels Gr X trial groups and D data If Groups In Line option is unchecked ERP data will be written as follows D D D Add Column Names Check this option to add column names in the first row of the file Column names can be useful for example for data exported to the Statistica program Add Row Names Check this option to add row names in the first column of the file Row names can be useful for example for data exported to the Statistica program File Enter full file path Use button on the right of the file name field to select a dri
23. menu Edit 44 6 Compute spectra by command spectra menu Analysis To define correct parameters press button Load from database and select corresponding condition from the list of conditions 7 Selection o Eyes Opened 15 36 16 Select condition Eves Closed Eyes Opened Auditory 45 7 Compare resulting spectra with database by command Comparison of results menu Analysis To do this comparison press button Load database of Processing results comparison dialog window and select corresponding condition Processing results comparison X EEG Spectra E EEG Spectra Muhr Nina 13 03 2003 Eyes Close Event related potentials x Auditory x Mathematical T Heading Visual CPT LK Cancel Load Database Warning Any comparison with database is possible if investigation date birth date and gender are defined correctly only See Patient card dialog window It is absolutely necessary to use the next format for any date DD MM YYYY Where DD is day MM month and YYYY year For example 01 04 1995 or 25 12 1998 The gender should be or F 46 computation and comparison 1 Perform 1 5 steps to reject artifacts similar to spectra computation 6 Compute ERP by command Compute ERP menu Analysis To define correct parameters press button Load from database and select corresponding condition from the list of conditions
24. IN E Lhange Change Change Change Change Change Change Change Change Change Change Change Change Change Change ae i u ae c ATTI PAAR E Change Cancel 226 86 Parameters Of Bandpass Filter dialog Parameters of bandpass filter Filter Response Function Impulse response 20 30 40 50 FO 80 30 100 110 120 Filter Response Function dE Filter response 10 20 30 40 50 60 YO 80 30 100 110 120 Low cut Fass 14 0 Hz High cut Pass 20 0 Hz Type Kaiser stop 73 0 Hz Dider z34 Cancel Stop 120 Hz Define frequency limits filter type and order For Chebyshev filter type also select low and high frequency cutoffs Filter Response Function Impulse Response and Filter Response graphs help to check if filter parameters you enter are adequate 221 87 Graphics Page Format dialog Graphics page format Hame Standard Page size Width mm J AL Height mm 20 Change AMES Calibration x Step of tip marks 200 Left rmm Tap mm Y Step of tip marks nV 2 width mm Height mm 1 Waveform graphic line parameters for groups m date Tod Curves list
25. 34 zb TET larl gt lt Gre gt lt Grs gt Grge Jo de zb 2 Foe Gra a 4 ef zb 21 Fe rds 4004 et zb fl FX Br Gra Br rds 63 er zb 21 Grl gt Bra Bhd 392 2 2b 21 F4 lt Grl gt lt 2 gt cari 7 ef zb 21 Fo Br Br3 rds B 4 AL zb 21 Br Br2 nr ard d 24 Al zb 21 Ca lt Grl gt Gra lt Grs gt Bres Ll 1n p Ce res Cancel Change Copy fram Choose a format from list or enter a new name for current format Page Size Press Change button to set new graphic page size The Page Size dialog is displayed after calling this command After setting new size horizontal and vertical sizes and positions of graphs would be proportionally modified Axes Customize axes output Check axes to be displayed X and or Y and set values for tic mark step milliseconds for X microvolts for Y Calibration Customize calibration scale output position on the page in relation to left upper corner and 517 Waveform graphic line parameters for groups Choose color and style for ERP graph lines for each trial group up to four groups can be depicted on a page simultaneously see ERP window Press a color filled button to call Colors dialog Press a button with a horizontal line to call Line Style dialog Table of Graph Parameters Each row of the
26. Would pou laike to capture video from additional camera Video Input Device AverDVD E Maker WOM Video Capture Video Input Video Composite Video compressor Microsott MPEG 4 Video Codec v1 Frames per 25 per second Resolution 320 x 240 pixels Video format Video Source Video black length 900 The parameters of main and additional cameras can be specified using this dialog Video input device Select video capturing device Video input Select video input to which camera is connected Video compressor Select on line video compressor The compressors Microsoft MPEG 4 Video Codec V1 Microsoft MPEG 4 Video Codec V3 will be the best for many system configurations We don t recommend you to use this option with rather slow computers Use Source button to specify compression parameters if corresponding video capture card support on line compression Frames per second Select frame rate if it is possible Video format 235 Press this button to specify parameters of video format Video Source Press this button to specify parameters of video capturing Audio input device select audio input device Audio source Press this button to specify parameters of audio input Audio Compressor select on line video compressor The compressors MPEG Layer 3 will be the best for many system configurations Would you like to capture audio Check this button 1f you would like to
27. 0 3 0 53 Hz 50 0 1 0 00 uv 2 2 0 3 053 Hz gt 50 0 1 0 00 uv 3 FRAef 0 3 D53Hz 30 500 1 9 0 00 uv 4 F3Ref uv s03 D53Hz 30 1 0 00 uw 5 FzRiaf Duv s 0 3 0 53 30 50 0 1 0 00 uv F amp Ref 0 3 D53Hz 30 5010 1 9 0 000 7 uv s 03 08532 30 1 0 00 uw 8 T3Ref 03 D53Hz 30 50 h1 Hz 0 000 3 C3Ref 03 08532 30 500 1 0 000 10 CeRef 03 0 53 30 S0 01 Hz2 000 uv EEE 11 C4 Ref 0 3 0 53 30 50 01 Hz 000 uv 12 T4 Aef 0 3 0 53 30 50 01 Hz 0 00 uv 13 T amp Ref 0 3 0 53 30 50 0 1 O00 uv m 14 P32Hef 0 3 0 53 30 500 1 000 uv 15 PeRef 0 3 0 53 30 500 1 0 00 uv 16 P4Ref 0 3 0 53 30 50 01 Hz 000 uv 17 T6 Ref 0 3 0 53 30 50 1 Hz 0 00 uv 18 01 Aef 0 3 0 53 30 50 01 Hz 0 00 uv 19 2 Ref 0 3 0 53 30 50 1 Hz 0 00 uv 20 Quv s 0 3 0 53 30 50 0 1 0 00 uv 5 Montage Parameters View dialog Use the Colors tab of the Montage Parameters dialog to monitor the parameters set You can also choose a montage from the montage list see Setup Montage List command Montage Name This field initially contains the name of default montage
28. En Deta L Teta O Alfa L Bet Bera Gamm LT L L 0 Deta Teta Beta 0 Gamm 0 L L O L L E The window can display background EEG coherence and phase spectra as well as power spectra To switch between window modes use the following Analysis menu commands EEG Spectra Displays EEG power spectra autocorrelation Coherence for Displays EEG coherence crosscorrelation for a Channels selected channel Average Coherence Displays average EEG coherence for all channels Disabled for auto and crosscorrelation Phase Spectra Displays EEG phase spectra for a selected channel Disabled for auto and crosscorrelation If spectral dynamics have been calculated during EEG processing you can toggle between Average Spectra and Spectral Dynamics window modes see Analysis menu commands Disabled for auto and crosscorrelation 67 Use the Scale list or keys to change color scale sensitivity or Y axis scale for graphs Use the Value list disabled for auto and crosscorrelation to choose what value to depict in graphs and topograms P uV 2 Graphs Y axis shows signal power Color scale encodes power p gnal p p in regular intervals Measurement units squared microvolts uV Graphs Y axis shows signal amplitude 1 e square root of power The amplitude term has physical sense only for spectral graphs in all other cas
29. EEG dipole source localization IEEE Trans Biomed Eng 1997 V 44 1243 1252 Attention Many author prefer to use average referent montage for dipole source A localization to eliminate influence of reference electrode signal Attention Please do not forget that an accuracy of dipole source localization method can be bad due to a number of different factors incorrect head model large errors in electrode coordinates existing more than one brain electromagnetic source and ets WinEEG and LORETA WinEEG have simple user interface that helps to transfer data from WinEEG to LORETA program LORETA program 15 rather popular software for 3D mapping of EEG or ERP voltage distribution or EEG frequency bandrange power into 3D Talairach atlas For more information see chapters Analysis Source distribution LORETA command and Analysis Spectra power distribution LORETA command The detail description of LORETA Low resolution electromagnetic tomography method can be found in R D Pasqual Marqui C M Michel D Lehmann Low resolution electromagnetic 38 tomography New Method for Localizing Electrical Activity in the Brain International Journal of Psychophysiology 1994 v 18 pp 49 65 Automated spikes detection and analysis The automated spike detection method uses both amplitude temporal parameters of waveforms and their spatial characteristics Many authors emphasized the amplitude temporal parameters of waveforms are
30. EEG files v 2 0 Compression Her C DAT EEG files Sampling rate 128 ts File EATMPAD DODOB48 TXT E 04 100 Cancel Choose an EEG interval to be exported Selection Fragment Full EEG file Format Exports an EEG interval selected by two vertical markers Exports an EEG fragment chosen from the list Exports the whole EEG Choose format for a file to export EEG interval to ASCII Binary Float EDF UDF Each column in an ASCII file means one channel and each row one time readout Data written to the file 15 reformatted and filtered according to the montage paramters it 1s not raw data In binary format a single value takes 4 bytes The data is recorded as follows lt 1 gt lt 51 gt lt 5 gt lt 5 gt lt SoC gt where denotes the ith time readout and C means jth channel Data written to the file is reformatted and filtered according to the montage paramters it is not raw data European Data Format supported by a number of European and American vendors of computer encephalography Data written to the file 1s reformatted and filtered according to the montage paramters it 1s not raw data Universal Data Format supported by leading vendors of computer 154 encephalography in Russia UDF is an extension for the EDF format Raw data 1s written to the file ANL Old ERP data format DAT Lexicor data format In this case the sampling ra
31. to the right of the name field to choose a drive and a folder Append To Existing File Check this option to append data to an existing file otherwise the file will be rewritten File appending may be useful for arranging data from several investigations an entire table for further statistical analysis 137 23 Export EEG Indices dialog EEG indices export is used for saving data in a file readable by other applications Export EEG indeces Export EEG indeces EEG indeces for defined bandranges File JH winEE IaEn RHaeleasesl HDEARSD ODDO EXP p cence Export EEG Indices Defines what features of EEG indices are to be exported to an ASCII file Raw EKG indices Writes raw EEG power spectra to an ASCII file Columns correspond spectra to channels and rows to frequencies first line 0 25 Hz second 0 5 Hz The value in a cell means the percent of time when the EEG contained halfwaves of the given bandrange EEG indices for the Writes the table of parameters of EEG indices to an ASCII file defined bandranges Columns present channels and each line correspond to an EEG bandrange Delta Theta etc The value in a cell means the percent of time when the EEG contained halfwaves of the given bandrange File Defines full path for the file to export data to Use the to the right of the name field to choose a drive and a folder 158 24 Video file compression dialog Video files compression 10
32. 2 Dipole source eccentricity ECC X Y Z PCA or ICA topographies See the next papers 1 D Flanagana Agarwala Y H Wanga J Gotman Improvement in the performance of automated spike detection using dipole source features for artefact rejection Clinical Neurophysiology 2003 Vol 114 P 38 49 2 P Van Hese P Boon K Vonck I Lemahieul R Van de Walle A New Method for Detection and Source Analysis of EEG Spikes 3 Bart Vanrumste Richard D Jones and Philip J Bones DETECTION OF FOCAL EPILEPTIFORM ACTIVITY IN THE EEG AN SVD AND DIPOLE MODEL APPROACH Proceedings of the Second Joint EMBS BMES Conference Houston TX USA October 23 26 2002 4 A Ossadtchi S Baillet J C Mosher D Thyerlei W Sutherling R M Leahy Automated Interictal Spike Detection and Source Localization in MEG using ICA and Spatio Temporal Clustering Clinical Neurophysiology 2003 submitted 5 S Faul L Marnane G Lightbody G Boylan S Connolly A METHOD FOR THE BLIND SEPARATION OF SOURCES FOR USE AS THE FIRST STAGE OF A NEONATAL SEIZURE DETECTION SYSTEM t The estimation of dipole model could be done using raw EEG voltage and EEG component The parameters of dipole source are used both for more exact spike detection and for eye blink artefact rejection For more information see description of command Analysis Spike Detection Analysis Spike Averaging Analysis Add Spike Analysis Delete Spike Analysis Change Channel
33. A 17 High Cut Hz 30 Spatial filEer parameters estimation Haw EEG Corrected EEG Excluded artefacts EEG compoments Topografies A i i yy eo E o 411 Method Gain PCA Invert filter Speed ICA If the quality 16 bad it 1s necessary to select another time interval 5 Mark other artifacts by Mark artifacts command menu Analysis To define correct parameters press button Load from database before processing start This button 15 placed in right bottom corner of Search and rejection of artifacts dialog box 43 Bochele Patrick Eyes Opened 09 01 42 Format Recording Analysis Setup Window Help fmi l Final Report m Dc EE Mapping e o x o i 28 Indecis lt Elm Spectra n s 44 4 Low Cut s 0 3 Sources distribution LORETA 102 Spectra power distribution LORE 106 Dipole source BrainLack toe Bandrange filter Remove EOG Comparison of results ee ra cT Tra hien L r ara R 47 5 T R L 0 000 5 Possible it could be necessary to mark additional time intervals containing artifacts manually In this case select corresponding time interval by vertical markers and perform command
34. Channel List Group Info 91 Copy EEG time interval into clipboard for selected spike Copy spike waveform into clipboard for selected spike Copy EEG time interval into clipboard for selected spike Copy spike waveform into text of final report for selected spike For Biofeedback Window Smoothes curve For EEG Spectra and EEG Indices Window Displays average EEG spectra Displays EEG spectra dynamics Shows processing results as graphs Shows processing results as histograms by EEG bandranges Shows processing results as a table of parameters for EEG bandranges Shows processing results as distribution maps by EEG bandranges Shows processing results as asymmetry distribution maps by EEG bandranges Maps spectra indices ratio Displays spectral ratio dynamics in a Spectra window as graphs Displays interaction diagram in a Spectra window For EEG Spectra Displays EEG power spectra Displays EEG coherence for one of selected channels Displays EEG coherence averaged over all channels Displays phase spectra for one of selected channels Modify parameters of interaction diagrams channel pairs and thresholds Insert tables of EEG spectra parameters into MS Word For pop up menu of EEG Spectra window Add map for selected frequency For ERP Window Displays ERP graphs arranging channels in columns and averaging groups in rows Displays ERP graphs arranging channels in rows and averaging groups in columns Display
35. F amp Rel Duwa 0 3 0 59 30 4 amp 55Hz 000 FT7 Ref 03 O53H2 30 45 55 000 FC3RHef Ou 03 3 30 45 55Hz 000w FCeRef 03 3 30 45 55Hz 000w en c gd cL Referents _ 2 CeRef 0 3 053 2 30 45 55He 000 DiuM s03 53Hz 30 45 55He 000 18 T4Ref 03 0 5392 30 4555Hz 000W 18 TP7Ref 03 DL53Hz 30 4555 000W Gain Baseline 20 CP2Ref 03 30 4555 000W FH annu 2 CPzRef 03 30 4555He 000W 22 CP4Ref 0 3 053 30 4555Hz 000w Low cut s High cut Har Notch riz 23 TP amp Ref 03 D53Hz 30 45 55H2 000W 0 45 55 24 TERef 03 30 4555H2 000W 25 P3Ref 03 30 4555H2 000W 26 PzRef 03 D53Hz 30 4555He 000 27 P4Ref 03 O53Hz 30 45 55H2 0000 28 TERef 03 30 4555Hz 0000 29 O1 Ret D 0 53 Hz 3l 45 55 Hz 0 00 ul Add Insert Delete 30 D 0 53 Hz 3l 45 55 Hz 0 00 ul 31 nb 0 3 0 93 30 45 59 Hz 0 00 wis Show all Hide all GFP 12 FC4 Aef 0 3 0 53 Hz 3l 45 55 Hz 0 00 ul 13 FT8 Aef 0 3 0 53 Hz 3l 45 55 Hz 0 00 us Biot Biod Bind 14 D 0 53 Hz 3l 45 55 Hz 0 00 us 15 D 0 53 Hz 30 45 55 Hz 0 00 us
36. Polinornial trends 2 T Slow waves Power of signal 200 0 5 zs 1 25 Additional processing Spectra dynamics Averaging f epoch Calculate coherence Calculate coherence and phase spectra Keep raw spectra Load Save Load from database 0 mA Cancel Time Interval Define EEG interval to be processed Selection Process interval between two vertical markers Fragment Process fragment selected from the list Full EEG file Process the whole file Channels Define a sunset of channels to be processed Epoch Length Select epoch length for analysis Spectrum step 15 derived from epoch length second 1 Hz spectrum step 2 seconds 0 5 Hz spectrum step 4 seconds 8 seconds 16 seconds 32 seconds 64 Overlapping 50 None Time window 177 0 25 Hz spectrum step 0 125 Hz spectrum step 0 0625 Hz spectrum step 0 03125 Hz spectrum step 0 015625 Hz spectrum step Choose this option if a non square time window 15 used Choose this option if a square time window 15 used Choose time window type Time windows are used to suppress side lobe infiltration by smoothing a source realization epoch to decrease sharp variations in its initial and final intervals Square Bartlett Hanning Welch Upper spectra frequency wij 1 wlj 1 abs 1 0 5 N 0 5 wij 0 5 1 6 281 1 3 0 53
37. 0 5 N j 0 5 N 0 5 Choose upper spectra frequency their length Artifact elimination Check options to define types of artifacts to be eliminated Polynomial trends Slow waves Additional Processing None Spectra Dynamics Calculate Coherence Calculate Phase Spectra Keep raw spectra Load from database Polynomial trend is estimated for each epoch and each channel and eliminated from source signal Additional parameter polynomial order Epochs with too large slow wave signal component cause by eye motion or other artifact are eliminated from averaging Additional parameters 1 maximal allowed slow wave power 2 bandrange to be treated as slow wave Calculate only average EEG spectra Calculate spectra dynamics together with average spectra The Averaging parameter is used to define how many successive epochs to average when calculating dynamics Calculate EEG coherence for each pair of channels together with average power spectra Calculate EEG coherence and EEG phase spectra for each pair of channels together with average power spectra save raw not averaged spectra in resulting file This option allows do more accurate estimation of power spectra parameters their confidence levels and statistical significance of differences during comparison Press this button to load standard parameters of spectra computation compatible with normative database To define correct parameters press button Lo
38. Fp 0 041 0 053 0 036 0 041 0 059 0 092 0 075 0 033 1 043 0 085 1 000 0 102 0 033 0 041 Pez 0029 0029 404 402 0 044 0042 4044 0 041 0 066 0 086 0 066 0 094 0 067 0 039 0 055 0 000 0 000 0000 4 k Cancel 8 Record List dialog WinEEG has its own database to simplify archiving and searching of files containing EEGs and processing results EEG spectra EEG indices etc There 1s a separate database for each type of file EEG files EEG spectra files EEG indices files and so on It 1s also possible to create several databases for one file type in order to group data by some criteria by investigation date for example Use the setup Database Pathnames command to create a new database or to select an existing one Pans B1 2Bb4 B1 2b4 L1 2M B1 2b3 HEIR PL B 2 260 HU 19 06 2003 B 05 003 18 75 2003 15 06 2003 P VISIT 1606 2003 HU B 05 23 RU 16706 2003 137 Record list ERE Darmendrarajah T hushan lten Raban lten Haban wick Selvarajah Pirathees Luzzi Ivo Conzett Leonard obze EEG abs EEG obs EEG obs EEG obs EEG EEG obze vatian vation vation vation vation m m m qm im vation vation B1 258 15 05 2003 Lorenz Corinne EEG observation 1 2M B1 257 18 05 2003 Giger
39. Page size Height rmm r Change Calibration t Standard Draw Lett mr Top mm Width mm Height Standard m W averom graphic line parameters for groups N mum Top vidi Height Curves list 1 38 3n TET Gr 5b lt Gr2 r3 56 Sb 2 104 30 b 2 Grl St lt Gr2 Sb Gr3 Sb 3 38 30 30 F ar St lt Gr2 St 46 St carg sb 4 38 39 30 30 Grl Sb lt 2 515 lt Gr34 Sb St 5 75 38 3n 30 Fe 5b Sb Gr3 Sp 5 104 38 30 30 F4 Grl St Gr2 515 Gr3 Sb Sb 7 137 38 30 30 F amp Grl Sb Sb Gr3 Sb lt 4 St 8 5 71 3n 30 3 Grl 56 Gr2 5 Sb 504 Sb 38 30 30 CX Grl 5b Sb Gr3 Sb Grd Sb m 71 71 Ce efr Shy efr Shs ere She x Cancel Zhang Copy from Warning Database comparison is protected by electronic Security key connected to USB If button Load from database or Load database is disabled exit from WinEEG connect Security key and run WinEEG again Don t forget please the Security key drivers should be installed 49 Warranties Of course WinEEG may have its own bugs as any other software We apologize in advance for possible troubles and promise to do our best to find and
40. set the duration of interval used for base line estimation before spike pick Duration of poststimulus interval ms set the duration of the interval after spike pick Calculate Statistical Significance check this option to calculate statistical significance of difference of spike wave from baseline The Student criterion is used to estimate statistical significance 184 53 EOG Rejection dialog rejection EOG Channel Choose appropriate EOG channel from list Polarity Choose Positive or Negative polarity for first EOG extremum caused by blinking Threshold uV Set threshold value for detecting EOG signal caused by blinking Duration ms Set average duration for EOG signal caused by blinking Press Reset button to undo previous EOG rejection 185 54 Search rejection artifacts dialog This dialog allows specify parameters of automatically detection of parts of EEG record including artifacts signals and mark corresponding time intervals The detection bases on threshold comparison of absolute voltage of EEG signal amplitude of show and fast waves with defined thresholds Ei v Voltage Threshold Condition Level uv 00 Slow Waves Amplitude 50 Frequency from 0 to Fast Waves Amplitude 50 Frequency from 20 tn 35 Include interval before ms 200 Include interval after ms 200 Clear previous set of artifact intervals 100 Cancel Clear
41. E EEG Spectra Battaglia Gianna 7 03 2003 H Battagiia 1703 Schindler Michael 7 04 2003 E G Spectra OF Cancel Load Database Select spectra ERP or ERP from the left and right list for comparison Press button Load Database to load a list of processing results included in normative database Press button OK to compute the differences between spectra ERP or ERD and open corresponding Spectra ERP or ERD window 202 69 Insert tables of spectra parameters dialog Insert tables of spectra parameters Topograme of power spectra Normalized power spectra Topograme of normalized power spectra Average frequebce Asymmetry of power spectra Topograme of asymmetry of power spectra Cancel Select type of tables and maps while you would like to insert into MS Word The result of this function is placed below Name Schindler Michael Date of observatiom 17 04 2003 Total epoch number 76 Time imterval duration 181 472 s Average power of spectra uV 2 203 7 2 5 7 000 Delta Teta 0 00 Alfa 0 000 Beta 0 000 uy uv uy 20 00 Betaz Gamma 0 000 uy Average values of normalized spectra Normalisation band range 0 0 64 0 Hz mm Ta Am Gamma C3 AvW 23 36 2 22 26 93 2 13 16 73 1 24 4 07 0 32 3 84 0 34 1 09 0 12 Pz AvW 27 56 2 34 23l 13 93 1
42. Place cursor on the trial label rectangle containing the trial number and click The rectangle will change its color All the trials labeled by this color will be excluded from further processing Click again to include the trial in the processing 20 Marking artifacts time intervals To mark artifacts time intervals select corresponding time interval by vertical markers and use Edit Cut command A horizontal blue bar displayed the artifacts marking time interval 21 Copying selected time intervals of EEG record and video EEG record to another file To copy a selected time intervals of EEG record and video EEG record to another file use File gt Export EEG and Video EEG command This function is useful if it is necessary to prepare a number of video EEG examples to write them to CD The WinEEG program will copy automatically video EEG data video EEG viewer ViewEEG program and some additional service data in selected folder It is possible to run this function many times As the results a number of subfolders will be created and the data will be copied in these subfolders lox File Edit wiew Favorites Tools Help Q A Back Forward Up Search Folders Move Copy Address Go START EXE utility helps to open all copied data automatically by ViewEEG program ViewEEG program 15 restricted version of WinEEG program providing reviewing of
43. Test name Parameters for event related potentials computation X Groups of trials Ma Labels Correct Incorrect Artifact 0 ri Auditory 0 Mathematical Headin D ea rn dg em m to PB E 4 3 6 5 Artifact processing Level 00 LM Channels Ony EEG Thresholds for channels md responce processing Detine pression Time interval E ft Ime intera Cancel er me Calculate statistical 0 100 Load Save Load from database OF Cancel 47 7 resulting with database by command Comparison of results menu Analysis To do this comparison press button Load database of Processing results comparison dialog window and select corresponding condition Processing results comparison E Event related potentials E EEG Spectra Gfeller Emanuel Raphael 23 06 2003 os Eyes Closed gt Eves Opened Auditory Z Mathematical Event related potentials Auditory Mathematical T Heading cual Cancel Load Database 48 8 To display results of statistical comparison perform command Graph formats menu Setup and select format with name Standard statistics Graphics page format Mame otandard Statistics Standard channel Standard Statistics Standard Standard wow standard Standard
44. eliminated from source signal 180 Additional parameter polynomial order Slow waves Epochs with too large slow wave signal component cause by eye motion or other artifact are eliminated from averaging Additional parameters 1 maximal allowed slow wave power 2 bandrange to be treated as slow wave 50 Nonlinear analysis parameters dialog Nonlinear analysis parameters Interval f Selection f Fragment 1224 07 C Ful EEG file Channel Ref Humber of samples 1 Sampling rate Hz 250 Step 1 Lag ms Estimate Plot of attractor Store plot in file C 2D File name Default Browse f 3D E Display Step 2 Theiler Window ms det auta Estimate Step 3 Embedding dimension 10 default 10 N det Fast Step 4 remi D Shep 5 for all channels Additional processing All channels Parameters EJE E Default Terminate Cancel Attention This window helps to define parameters of nonlinear analysis and run processing utilities The nonlinear analysis if optional function and can be ordered separately by special order together with description of this window 181 51 Spike detection dialog Spike detection X Source data for detection algorithm ICA components Amplitude temparal parameters Duration 1 m lt Durl lt Dura
45. threshold setup especially view of the dependence of noise level on montage parameters and the notch filter use Here we list a set of parameters that 1s optimal from our point of view low frequency filter 30 Hz notch filter 50 Hz 1s on absolute peak to peak threshold 3 uV The peak to peak threshold should be chosen to exceed the amplifier noise level for the chosen bandwidth selection of half wave detection algorithm is also not trivial If you use the algorithm based on zero crossing detection processing will detect low frequency high amplitude oscillations caused by signal baseline fluctuations generated by motor or vascular artifacts The influence of artifacts can be reduced by choosing a lower frequency limit We recommend the value of 0 1 sec or 1 5 Hz Unfortunately even in this case estimated EEG indices would be offset towards the low frequency range For example high frequency low amplitude signal oscillations in the beta range are often observed against high amplitude low frequency potential fluctuations In this case the zero cross half wave detection algorithm will not detect the high frequency signal components However at the same time the results obtained by means of this algorithm will correspond better to those of spectral analysis although not precisely On the other hand the algorithm of half wave detection from local extremes is less sensitive to motor and vascular artifacts and 1s also more sensitive when det
46. 01 01 1950 to 31 12 1959 To enable automatic search by date use DD MM Y Y Y Y date format Age from to step fields define a number of rows in resulting table Divide by gender box defines 15 the observations of males and females should be calculated separately or not Press OK button for start a searching and calculation procedure The example of resulting table 1s placed below 147 17 File Open dialog Specifies a file to open I 7 58 I 13 59 eeg Bl les 9 19 59 eeg AG 07 A eeg 13 4 eeg 19 44 ial 12 63 08 69 14 63 20 59 2 5 eeg Dba eeg 14 4 eeg 20 A eg 14 13 63 09 69 eeq 15 65 eeq 21 59 My 3 5 H A s 15 40 eeg 41 45 144 14 63 10 53 16 69 eeg 22 aA 04 405 eeg 10 A eeg 16 44 eeg 2 14 05 69 11 69 17 65 eeq 11x eeg 1A eeg 144 DE E8 12 18 9 12 44 19 404 2 File name n Files of type EEG files ee L ancel v Files of Type Select the type of file you want to open EEG EEG file RTF final report file SPC EEG spectra file DX EEG indices file ERP event related potential file ERD event related desynchronization wavelet file ERC event related coherence file BFB biofeedback file and
47. 064 O2 AvW 0 07 lt 0 822 0 39 p 0 479 1 28 p 0 071 0 04 p 0 622 1 30 p 0 209 0 64 p 0 237 2 58 lt 0 140 Comparison of asymmetry of power spectra 9o Dea Tea Alfa Gamma E an mm m Lum Le vee an nr 50 00 40 00 Delta 0 00 Teta an Alfa 50 00 Betal 40 00 60 00 60 00 Betas 60 00 Gamma 00 25 210 3 000 3 000 Delta 3 000 Teta 3 000 Alfa 3 000 Betal SD SD 3 000 3 000 3 000 3 000 Betaz 3 000 Gamma 3 000 The values of differences of corresponding spectra parameters and their significance level are placed in the cells of tables 71 Database Parameters Databases Of Raw Data dialog Database Of EEG Base Pathname Enter full path for EEG database or press button on the right of the name field to browse folders Database Of EEG Working Folder Enter full path for EEG working folder or press button on the right of the name field to browse drives and to select a folder Database Of Biofeedback Records Base Pathname Enter full path for biofeedback database or press button on the right of the name field to browse folders Database Of Biofeedback Records Working Folder Enter full path for biofeedback working folder or press button on the right of the name field to browse drives and to select a folder If there 1s no file or folder with the name you entered a new one will be
48. 179 ARTIFACT 580 M A LA EM M LM ee 179 30 2 Nvonlinecar analysis parameters ets dee ins 180 PT 181 eU Muss e Uu Mero 183 29 406 ReIectton IG eee 184 ANG Teleetion dracty 185 29 Datial T ller Parameters ESstumatton 186 56 Parameters For Evoked Potential Computation dialog 187 57 Parameters for Event Related Potential Computation dialog eese essen ener 188 59 Parameters For Event Related Coherence Computation dialogue 195 QU Wavelet Decomposition GAIA OR x EM IE 194 O1 Wavelet C dialogus RN IM IM eas maa ee a MU MEE 195 AR Choose QU TOT DICTAE AIT 195 RA ECHO ondes 197 64 Subject Response Processing Parameters 197 er METUIT SEIT E Ec 196 66 Results Of Averaging
49. 222 112 DS a hance 112 09 VANGIVSIS ATIUACLS COPTOCUOT c COP IBI ee URS 112 100 Analysis Turn on off bandpass filter not in a nnne 113 TOT Analysis c Compute ERF zcommand eode eo og 113 702 Analysis Compute ERD x COMMMOANG eRe 113 103 Analysis Compute COMMA sse e net 114 104 Analysis Compute Wavelets command insenere ccs win aria tudo 114 105 Analysis Compute Wavelets COMMONG 115 106 Analysis Comparison Of results Command 115 107 Pop up menu EEG window Add Spike 115 108 Pop up menu of EEG window Delete Spike command 115 109 Pop up menu of EEG window Change Channel command eene 115 110 Pop up menu of EEG window Copy EEG esses eene eese seen nenne 115 111 Pop up menu of EEG window Copy Spike command esses eese eese enne nnn nnn nennen eese ns 115 112 Pop up menu of EEG window Copy EEG to Report command eese eene nennen nenne ees senes 115 113 P
50. 23 2 29 0 23 1 23 0 13 0 38 0 05 204 40 00 30 00 Delta 0 00 Teta Alta FA 20 00 Betaz 0 00 Average frequence Hz C3 AvW 2 48 0 06 5 45 0 07 9 55 0 09 16 45 0 12 23 74 0 13 34 02 0 16 6 07 0 23 Average asymmetry for power spectra 76 Tm CA AvW C3 AvW 0 74 6 43 5 61 5 31 3 35 4 67 3 21 4 70 2 63 3 55 1 55 4 00 1 57 3 25 10 75 1 22 2192 37 48 26 60 14 79 PA AvW P3 AvW 10 94 6 39 3 04 6 13 4 36 441 2 57 435 4 01 3 73 1 61 3 50 4 32 3 23 T6 AvW TS AvW 11 13 17 88 11 78 2 56 4 52 711 4 03 3 75 4 76 12 02 205 as O2 AvW O1 AvW 346 471 0 81 414 856 3 41 3 74 420 po plici 2 61 2 33 2 f 5 Delta E 00 Teta 00 Alta a 00 Betal 40 00 25 Betaz um Gamma 50 00 4 50 00 The values of corresponding spectra parameters and their confidence interval are placed in the cells of tables 70 Insert tables of spectra comparison dialog Insert tables of spectra comparison Power spectra tapagrams Topograms of power spetra statistical comparison Normalized power spectra Normalized power spectra topograme Topograms of normalized power spectra statictical comparison Average frequence Asummery of spectra power Topograme of asymmetry of power spectra Topograme o
51. 3 een Monopolar 1 Monopolar 1 e eee Manapolar 1 Monopolar 1 Monopolar 1 Monopolar 1 Monopolar 1 emu Monopolar 1 Monopolar 1 se PST pene Monopolar 1 Monopolar 1 gp NIIS Monopolar 1 as APERIA ea 1 Monopolar 1 TS FLATS PRI Monapolar 1 Monopolar 1 SA ALARMS Data base V Pu ARAN NA es 41 3 Select time interval by vertical markers including eyes blink artifacts duration 15 about 5 10 seconds 4 Correct this artifacts using Artifacts correction command menu Analysis It is necessary to do visual inspection of quality artifacts correction procedure M T EEG Patrick Eyes Opened 09 01 47 Format Recording Analysis Setup Window Help 4 Al Final Report me 2 FE OER E gt Ck EEG Mapping 514 4 b b 206 Indecis E a m EE Spectra Gain 1504 Cut s 0 3 Sources distribution LORETA 55 Spectra power distribution LORETA Dipole source BrainLock hts Bandrange Filter gu Remove Py flete ting Be nj Mark Artifacts nee ER Artifacts correction ERP ERD Compute Comparison af results ive TUM ing spatial Filtering L 5 1 ul R 14 2 uv T R L 4 708 s R L 19 2
52. 5 EEG Power Spectra Auto and Crosscorrelations 65 JO VUJEBEGWndices WAMAOW oi to EE tus umen a EIE ME ED MEN AES 70 JP ERP W AOW 72 La dvd ei 76 tS IVE 76 LO INP CONTOU TOO DOT aE et 78 ZO POOI DOI a 80 2ds DAMS riu 81 29 JJPREALPFOVICW CONHITOLI BOT e aa 81 IUD 82 29 Channel NIMES Vade eU ee etai 63 20 Maps Bar 63 22 84 IO Bored ba k BA Rr 84 20 Maps ana Ndi eS DOTS 85 PU MEME GUI DOE oa
53. 63 Artifact Rejection Thresholds dialog Artefacts rejection thresholds Level riV Level riv Level riV Level riv Level rv jo B BO P Emi Drep EBEN Pajp Level ri Level ri Level ri Level Adi 0 Ad 0 443 0 Add 0 05 0 AdE 0 Ad 0 408 0 Biel 0 0 Bio Bio 0 Bio8 Check the channels that will be tested for artifacts and define an individual threshold value for each of these channels 64 Subject Response Processing Parameters dialog You will need to define the following parameters for button processing Subject responce processing parameters Group Stimulus Timeintereal ms Left Button Right Button M ERP p P s rj 2 1 p p 4 fo Ho 1 fo Mo ERP amp 1 jo 40 No gi 1 ajo 40 Left Button channel Mo Aight Button channel Cancel i 1 Check Groups for which response reactions will be calculated 2 For each of the trial groups set the ordinal number of the Stimulus relative to which reaction time will be calculated 198 3 Set the allowed Time Interval for reaction time values in mil
54. 65 Select List Of Channels dialog select channels to be depicted by graphs or maps an ERP Window Use Select and Deselect buttons to select or to deselect all channels 66 Results Of Averaging And Subject Response Processing dialog Results of averaging and subject responce procesiing ae 14 16 16 horizontal 16 vertical 24 horizontal 24 vertical 32 horizontal a2 vertical 40 horizontal 40 vertical 29 24 12 14 B 4 B 13 12 Mm ho cao cm Select list of channels B 1 P Mi roo nr 199 0 0 0 0 0 0 0 0 0 Cancel Select all Unselect all _ Select _Unselect al Bob 65 bos ood b13 796 711 0 D 471 00 55 7 00 61 7 00 116 7 00 448 00 78 1 00 2580 00 1120 00 The table of ERP averaging results consists of following columns Group Name group names can be edited Total total number of trials of the given group in the source EEG data as result of trial label sorting Averaged number of trials used to average ERPs This value is obtained as result of subtracting Artifact Omission and Commission values from the Total value for the given group 200 Error number of trials when the patient pressed incorrect button Omission number of trials when the patient should press the button in response to the stimulus but didn t do it Commission number of trials when the pat
55. And Subject Response Processing dialog eene eene 199 67 List of channel pairs and parameters EEG coherence and EEG crosscorrelations dialog usse 200 68 Processing results comparison 4 201 69 Insert tables of spectra parameters dialog 202 70 Insert tables of spectra comparison 1 205 71 Database Parameters Databases Of Raw Data 210 72 Database Parameters Databases of Processing Results dialog esses eene nnne nna 211 73 Database Parameters Browser Settings dialog sisse eene nnn nnne sensa annee rese inna 213 74 Database Parameters Base Record Search Parameters dialog nnne eee 213 DC TOOL E10 a 213 LOT TST TCS LE GPU O E 216 Lc Prelerences EB6 WINQOWSATARIOQ ok scare ea EEA O E ONE N ON 217 218 219 REO I 1 AERE TE 220 ST Mappia parame eP a 220 OZ Names OE 221 OS VITRINE Tm 222 od Photostiulaton Prog ramibistalaloD c Uae Sa eo
56. EEG oscillation power ERPs will be subtracted from source data to eliminate their effect and only induced activity will remain 193 Normalize Each Trial If this option 1s unchecked average signal power dynamics 1s calculated over all trials and then normalized by average signal power value for prestimulus interval Otherwise each trial is normalized separately Attention Check this option only if prestimulus intervals and intervals between trials are long enough not less than one second Otherwise prestimulus signal power variance will be very big and may significantly distort ERD dynamics 59 Parameters For Event Related Coherence Computation dialogue Parameters for event related coherence computation X Groups of trials Ma Mame Labels Correct Incorrect Artefacts 1 1 2 2 3 3 E Li i Sis 4 4 BEEN 5 1 2 E 3 4 o o0 7 5 0 0 Group differences E 4 3 6 5 Choose Channel list Artifact processing Synchronisation MIF pT Level 100 uy Type Stimulus F 2 ZA ES AW Channels Stimulus s 1 Fac Thresholds For channels Buttan channel 1 FT FEA Subject responce processing Frequence Defined 0050 59 59 552 20 Epoch 200 mz EE 2 Dee Frequence 5
57. EXE file It s usual location is folder with name LORETA 020 MAIN 93 Analysis Dipole Source BrainLock command Run BrainLock program optional 94 Analysis Nonlinear Analysis command Run special utilities for nonlinear analysis of EEG optional The Nonlinear analysis parameters dialogs will be displayed on calling this command 95 Analysis Spike Detection command Run this command to automatically find spike waveforms in the whole EEG file The Spike detection dialogs will be displayed on calling this command 112 96 Analysis Spike Averaging command Run this command to calculate average waveform of spikes and opens an ERP window The spikes will be sorted by main channel assigned with spike labels Averaged spikes calculation dialogs will be displayed on calling this command 97 Analysis Remove EOG command Run this command to calculate coefficients for electrooculogram influence on EEG and to subtract weighted EOG signal from signals of other channels One of the EOG Rejection dialogs will be displayed on calling this command EOG was recorded at least by one channel It also assumes that no other high amplitude artifact occurred during EEG acquisition Otherwise EEG can be significantly distorted and eye movement artifact elimination may be quite poor Attention The algorithm of EOG artifact elimination 15 not ideal and supposes that a Shortc
58. Eie Biz Eie 16 14 All Montage Name This field initially contains the name of default montage from the montage list Use down arrow button to select a different montage from the list for use as a new default You can also rename the selected montage Channel List The table of channels in the montage 1s placed on the left side Each row corresponds to a channel in the montage don t confuse them with the channels in the acquisition list The montage channel list includes channels that will be displayed during the monitoring and processed Columns correspond to channel parameters a The No column contains the ordinal number of the channel To the left of it there is a pictogram its color is the same that the waveform color in the EEG window It depicts also the channel status visible or hidden if the pictogram is marked by a V character the channel is shown in the EEG window visible otherwise the channel 1s not displayed hidden AII channels included in the list of montage channels will be used for processing except polygraphic channels Biol B102 130 b The Channel column shows the electrode scheme for example 1 2 the electrode named first 15 the active one the second is the passive one channel can be used if it is included in the list of monitored channels c The Gain column shows the channel gains
59. For any channel in the montage you can select a gain value from list 1 0 1 5 2 0 3 0 5 0 7 0 10 0 15 0 20 0 30 0 50 0 70 0 100 0 150 0 200 0 300 0 500 0 700 0 uV cm 1 0 1 5 2 0 3 0 5 0 7 0 10 0 15 0 20 0 30 0 50 0 70 0 100 0 150 0 200 0 300 0 500 0 700 0 d The Low cut column shows the selected low frequency cutoff value For any channel in the montage you can set one of the following values for low cutoff frequency 0 16 Hz 1 0 sec 0 53 Hz 0 3 sec 1 6 Hz 0 1 sec u 5 3 Hz 0 03 sec and 0 0 Hz DC 0 016 Hz 10 0 sec 0 032 Hz 5 0 sec 0 053 Hz 3 0 sec 0 045 Hz 3 5 sec for DC amplifiers e The High cut column shows the selected high frequency cutoff value For any channel in the montage you can set one of the following values for high cutoff frequency 15 Hz 30 Hz 50 Hz 70 Hz and possible 150 Hz 0 5 Hz 1 5 Hz for different modification of amplifiers filters are 2 order Butterworth filters f The Notch column shows the notch values For any channel one of the following notch values can be set Turn Off 45 55 Hz 40 60 Hz 35 65 Hz 55 65 Hz 50 70 Hz 45 75 Hz filters are 12 order Butterworth notch filters Attention Do not use the wide width filters unless absolutely necessary since it can distort bandwidth g The Baseline shows the selected value of the channel baseline offset The offset 1s set in millivolts microvol
60. H Gonmand eue toto eV a 101 DO GU Pateni sx 102 29 Edit V isie t e rt tatu 102 40 Views Toolbur 5 Toolbar commahdas ad E dt eto et es d Uv 102 41 View Toolbar gt Input Control Toolbar 102 42 View Toolbar gt Analysis Ioolb rcomnmalid ius iex n ERU e EE PIER 102 23 View Toolbar gt Maps Window commana succo to oi aw PM DU Am UM coupe Ee 102 44 View Toolbar gt Dipole Window command 102 Z5 Views Toolbar e Filters Bar Command ense REUS 102 46 View Toolb r gt REID n Oda 103 47 View Toolbar Spectra Bar commanderie UI vet N 103 Z6 Views Toolbar gt INdices Bar COMMANG iue adesse ut RR QUE OE I ERE SU ug e Quad tuts qa I s RUE 103 40 Views Toolbar gt ERF Bar Command oe 103 30 Views Toolbar Biofeedback Bar command iiia exe 103 24 Views Toolbar
61. OIM OMAL T Onla COMMON 106 00 FOVMGL PF 106 67 Recording EEG Monitoring 106 05 Recording EEG Recording on off 4 106 09 Recorduig Pause COMMON 106 osa OE 107 71 Recording Turn On Off Calibration command 107 Vs VIDCOTCCOTOUIS COMMON RR EE 107 Reset tec bFiltercommn and nora emt essi 107 74 Recording Photostimulation On Off 107 79 Recording Photostimulation Program command asus ei vet etu v biet 106 6 Recordino Stimuli Presentation Programi command ne this ass 106 s ICCOTOING ON Off MUSE COMMANA rreri aide ipd adde 106 ICCOTAING COUPON O S vig iv eA t ed tI CU Ed iude 106 sacas ves iot te 108 90 Recording EWING Back COMMONG uti 109 OT decordingsd Back comma sve
62. Report Template dialog will appear Use Delete button to delete the selected final report from the list Use Edit button to edit selected final report Final Report Template dialog will appear 232 report template list 95 Final Report Template dialog Enter template name in the Name field Enter final report text in the edit box below Name field Fianl report templater Hew 233 96 Setup Final Report Generator dialog Setup final report generator X E ditor Internal Like Wordpad MS Word E dit template Resource tile 1 5 cancel Editor Define what editor to use Attention MS Word can be chosen only if it is installed on your computer WinEEG works only with MS Word 97 and MS Word 2000 MS Word 95 15 not supported Resource File Choose resource RES file for final report generation Edit template Run 5 Word application to modify empty final report 234 97 Video recorder parameters Video recoder parameters X Camera Video Input Device Pinnacle Dv AV Capture Video Input Video Composite Video compressor Microsott MPEG 4 Video Codec V1 Frames per 25 per second Resolution 352 288 pixels Video format Video Source Audio Input Device Sounds Digital Audio Audio Source Audio compressor MPEG Layer 3 Would you like to capture audio Additional camera
63. Search for the best driver in these locations Use the check boses below to limit or expand the default search which includes local paths and removable media The best driver found will be installed Search removable media floppy CD ROM E Browse Don t search will choose the driver to install Choose this option to select the device driver from list Windows does not guarantee that the driver you choose will be the best match for your hardware lt Back Cancel 5 Select Search the best driver in these locations uncheck Search removable media floppy CD ROM check Include this location in the search and then click the Browse button Select the Folder that contains drivers Far your hardware Fig GOODIES Guarview Library QuickCap Ref2o04 c ReoRep Tova c3 DRY web site C3 winEEGCpp 6 Find USBDRvY folder on your installation CD and then click the OK button 7 Click the Next button Windows will automatically install driver Windows ask you to specify corresponding inf and sys file In this case select USBISOCH INF or ftd2xx inf file USBISOCH SYS or ftd2xx sys placed into USBDRV folder 13 Found New Hardware Wizard 4 Please choose your search and installation options Pha Rae S Search for the best driver in these locations Use the check boses below to limit or expand the default search which includes local paths and removab
64. Time from the last preceding stimulus ms stimulus number is indicated by number before colon Frequency Hz for rasters Statistical significance Description Caps Lock key locked Num Lock key locked Scroll Lock key locked 23 Print Preview Control Bar Eesviaus 1 Two Page zonam in Srey SUM Llose 82 Print Call Print dialog to start printing the document Next View next page Previous View previous page Two Page One Page View two pages or one page at a time Zoom in Zoom page in Zoom out Zoom page out Close Close Print Preview 24 Filters Bar Speed 30 mm Gain nv Baseline 0 00 n Low Cut is High Cut Hz 20 Motch Hz 50 0 1 This bar 15 usually placed at the top of the WinEEG window but can be moved and is used to edit a number of parameters for the active EEG window or active EEG file Use the Speed list to choose horizontal scale simulating paper speed You can also use and keys Press key to half decrease speed or key to increase the speed twice Use the Gain list to choose vertical scale gain You can also use and keys Press key to half decrease gain or key to increase gain twice To change gain only for a selected channel hold Ctrl pressed see Channel Names bar otherwise gain will be changed for all channels that are visible t
65. a number of other file types Look In Choose a folder on a drive or in a network where the file to open can be found 148 18 File Save As dialog Specifies the name and location of the file you want to save Gave Save Eeg 12 45 19 44 01 69 07 69 I 13 69 19 69 AS eeg 13 4 eeg 19 44 14 12 63 08 69 14 63 20 59 2 5 eeg Dba eeg 14 4 eeg 20 A eeg 14 13 9 09 69 eeq 15 65 eeq 21 3 4 H A s eeq 15 40 Beg 41 45 14 14 63 10 53 16 69 eeg 22 aA 04 405 eeg 10 48 eeg 16 44 eeg 224 eeg 14 05 69 eeg 11 69 17 63 amp eg Ma E A s 11x eeg 174 144 06 69 12 nn 18 63 eeq Save type EEG files L ancel File name 2 File Name Type a new file name the extension will be suggested by the application The following extensions are used EEG for EEG files RTF for final reports SPC for EEG power spectra IDX for EEG indices ERP for event related potentials BEB for biofeedback files ERD for event related EEG desynchronization ERC for event related EEG coherence and also a number of other file types Save In Choose a folder on a drive or a netwo
66. all Load from database Channels Select channels which signals will be used for processing Voltage Threshold Condition Check this button if you would like to use voltage criteria and select appropriate threshold Level Slow Waves Check this button if you would like to use slow wave amplitude criteria and select appropriate threshold Amplitude and frequency band Frequency from to Fast Waves Check this button if you would like to use fast wave amplitude criteria and select appropriate threshold Amplitude and frequency band Frequency from to Clear previous set of artifacts intervals Check this button if you would like to restore all previously marked time intervals Clear all Press this button if you would like to restore all previously marked time intervals Load from database Press this button to define default parameters used in normative database OK Press this button to start processing of data using specified parameters 166 55 Spatial Filter Parameters Estimation dialogue Spatial filter parameters estimation Haw EEG Corected EEG Excluded artefacts EEG compoments Topografies H j Mu j e 4 9 9 i 5 ca i Cancel Restore 411 Method Invert filter Speed ICA The raw unfiltered EEG waveforms are displayed on Raw EEG plot The Corrected filtered EEG waveforms are displ
67. are the similar Video EEG recording WinEEG program provides the next features for Video EEG recording 1 Synchronous on line recording of EEG video signals from one or two cameras and audio signal from microphone 2 On line and off line compression recompression of video and audio signal MPEG4 compression of video signal and MPEG3 compression of audio signal are previded 3 Night video monitoring using video camera with infrared illuminant 4 Manual marking of events during EEG and video recording 5 Off line synchronous playback of EEG video and audio signals 6 Automatic positioning to video pictures corresponding to manually selected EEG sample or marker 7 Editing of EEG video and audio signals to save meaningful fragments only 8 Advanced service for preparation of CD copy of video EEG record 9 Compact but powerful free video EEG viewer for displaying of CD or DVD copy of video EEG record provides next passivity off line The next command of WinEEG program help to control corresponding features of Video EEG recording Setup gt Video Recording View gt Main Video Window View gt Additional Video Window View gt Video Window Size Recording gt Video Recording Edit Clear Edit gt Clear All Video Data File gt Compress Video Files File gt Export EEG and Video EEG Recording gt Play Forward Recording Rewind Forward Positioning to video pictures corresponding to
68. be displayed in lower part The left and right border of track button of scroll bar will correspond to first and last displayed EEG sample They will correspond to first and last displayed spike s mark also This relationship between track button displayed spikes array and displayed time interval at upper part will help to find a part of EEG required for analysis 24 Manual changing spike parameters 57 The automated spike detection method miss real spikes and mark some artifacts correct results of automated spike detection method commands Add Spike and Delete Spike could be used To add spike move mouse pointer to appropriate channels and time sample press and release right mouse button and choose command Add Spike from pop up menu To delete marked as spike artifact move mouse pointer to appropriate spike label press and release right mouse button and choose command Detele Spike from pop up menu To change main channel of spike defining a localization of spike source move mouse pointer to appropriate spike label press and release right mouse button select command Change Chennel in pop up menu and choose appropriate channel from additional menu 25 nsert spike waveform into report To insert waveform of selected spike into clipboard or final report commands Copy Spike of Copy Spike to report of pop up menu could be used To do this artifact move mouse pointer to spike label press and release right mouse button and sel
69. changes of mentioned above parameters will automatically disable artifact correction spatial filter Shortcut 113 Main toolbar 100 Analysis Turn on off bandpass filter not a menu Run this command to turn on off band pass filter defined by Setup EEG bandranges command Press right placed arrow button to displayed pop up menu helps to select filter Shortcut Main toolbar 101 Analysis Compute ERP command Calculates event related potentials ERP for a selected EEG interval in the active EEG file and opens an ERP window You can open several ERP windows for one active EEG file but for different intervals ERPs be calculated only if presentation of visual auditory stimuli was carried out synchronously with EEG acquisition After calling this command a Parameters for Event Related Potential Computation photostimulation dialog or a Parameters for Event Related Potential Computation stimuli presentation dialog is displayed to define additional processing parameters depending on whether source data type 15 photostimulation EEG or stimuli presentation EEG Raw data 1s reformatted according to montage parameters before processing ERP maps choose a monopolar montage for the active EEG window before calling this command D Attention EEG reformatted to a bipolar montage cannot be mapped If you wish to view Electrode coordinates are additional parameters for maps
70. different spectra ERP and ERD automatically To start batch data processing open EEG database select subset of records and press button Average 37 Dipole source localization Dipole source localization function uses scalp potentials and electrode 3 D coordinates as input parameters The 3 D coordinates cab be set or modified using commands View Select montage or setup Montage list See chapter Montage Parameters Electrodes dialog Equivalent dipole source coordinates and momentums are computed automatically using this method and are displayed in a special window QEA RRE 0 069 ECC 1 00000 RRE 0 118 ECC 0 23795 Copy Copy Parameters This window can be displayed using View Toolbar gt Dipole window command The four shell spherical volume conductor model of head used by dipole source localization method is presented by C J Stol J W H Meijs M J Peter Inverse solution based on MEG and EEG applied to volume conductor analysis Phys Med Biol 1987 V 32 No 1 99 104 Least square solution if inverse problem is performed by Nelder Meade simplex method W H Press S A Teukolsky W T Vetterling B P Flannery Numerical Recipes in C The Art of Scientific Computing Second Edition Cambrige Unuversity Press 1992 994 p Used in WinEEG program optimization of forward model parameters computation was presented by Sun M An efficient algorithm for computing multishell spherical volume conductor models
71. free hard disk space but only if the file has been backed up Data File and the Corresponding Record option is mostly used for deleting test records not real investigation data 145 15 Add File To Database dialog Look in Eeg 01 69 eeg 4 les 9 10 69 eeg Ax eeg 4 5 eeg 07 A eeg 10 834 02 59 05 59 08 59 11 59 2 5 eeg 05 A eeq 08 4 eeg 11 44 26g 03 59 06 59 09 59 12 59 06 A H A s eeq 12 44 Files of type Fam EEG files Cancel Iv Don t remane files if possible File name Copy files to working data base folder write volume name to data base Verify addition of each file v You can select several files to be added Define also if file names should be kept if data files should be copied to working directory if archive name should be recorded in the database and if patient card should be viewed before file adding 16 Statistical report dialog Statistical report P X EE Date from t Time from tof Investigations Diagnosis Age from to 80 Shep io Divide by gender Cancel The Statistical report dialog 1s used to define a set of criteria for record filtering In other words only records satisfying all of the specified criteria would be ca
72. from the database Event Related EEG Desynchronization and Coherence Event related EEG desynchronization ERD and event related EEG coherence ERCoh are computed similarly to ERPs see above ERD and ERCoh can be calculated only for EEG files recorded together with stimulus presentation by PSYTASK program on an additional stimulus presenting computer Below we describe the algorithm of ERD computation The method of ERCoh is not common at present but it is described for example in Shibata T Shimoyama I Ito T Abla D Iwasa H Koseki K Yamanouchi N Sato T Nakajima Y The synchronization between brain areas under motor inhibition process humans estimated by event related EEG coherence Neurosci Res 1998 v 31 p 265 271 Event related EEG desynchronization and synchronization ERDS is calculated by several steps 1 To reduce the affect of the common referent source EEG 15 reformatted to average weighted referent do not forget to use a montage containing an average weighted referent AvW 2 The signal for a given frequency range is detected for each EEG fragment trial by means of digital bandpass filters do not forget to turn bandpass filter on 3 To reduce the influence of ERP components on ERDS averaged ERPs are computed over the trial to be then subtracted from each trial 4 To assess EEG signal power dynamics for a given frequency range for each time readout bin the values are squared and averaged ov
73. if a new EEG window 15 opened see File New command Use Input Control toolbar to change photostimulation frequency 108 Photostimulation frequency can also be modified by means of keys Ctrl Arrow Up Increases frequency by 1 Hz Ctrl Arrow Down Decreases frequency by 1 Hz Shortcuts Input Control toolbar Keys Blank 75 Recording Photostimulation Program command Use this command to turn a photostimulation program on or off The command is available only if a new EEG window 15 opened see File New command Use Setup Photostimulation Programs command to set photostimulation program parameters Shortcut Input Control toolbar 76 Recording Stimuli Presentation Program command Use this command to start stop visual or auditory stimuli presentation The command 15 available only if a new EEG window 15 opened see File New command The Stimuli Presentation Program List dialog 1s displayed after calling this command Shortcut Input Control toolbar 77 Recording Turn On Off Music command Run this command to turn on off music for auditory biofeedback Shortcut Input Control toolbar 76 Recording Calibration command Run this command to review calibration of the amplifiers The Calibration of Amplifiers dialog will be displayed on calling this command WinEEG users are able only to view calibration results not to modify them
74. in a histogram by cursor position when holding the right mouse button pressed 132 Analysis Channels Groups command Displays ERP graphs in an ERP window arranging them in columns by channels and in rows by trial groups Shortcut Analysis toolbar 133 Analysis Groups Channels command Displays ERP graphs in an ERP window arranging them in columns by trial groups and in rows by channels Shortcut Analysis toolbar 119 134 Analysis Time Groups Mapping command Displays ERP maps in an ERP window arranging them in columns by time readouts and in rows by trial groups Attention Maps cannot be viewed if source EEG was reformatted to a bipolar montage before processing Shortcut Analysis toolbar 135 Analysis Groups Time Mapping command Displays ERP maps in an ERP window arranging them in columns by trial groups and in rows by time readouts Attention Maps cannot be viewed if source EEG was reformatted to a bipolar montage before processing Shortcut Analysis toolbar 136 Analysis Formatted Page command Displays ERP graphs and maps in an ERP window Graphs are placed in the window according to defined ERP display format see Setup Graph Formats command Attention Maps cannot be viewed if source EEG was reformatted to a bipolar montage before processing Shortcut Analysis toolbar et 137 Analysis Average Bandpower command Displays average EEG bandp
75. list of photostimulation programs Photostimulation Program List dialog 15 displayed after calling this command 159 Setup EEG Bandranges command Defines a list of standard EEG bandranges to be used for data processing an EEG Indices window or in an EEG Spectra window EEG Bandranges dialog is displayed after calling this command 160 Setup Stimuli Presentation Programs command Displays and modifies stimuli presentation programs protocols for ERP acquisition stimuli Presentation Program List dialog 1s displayed after calling this command 161 Setup Graph Formats command Changes graph output options in an ERP window 123 Graphics Page Format dialog 15 displayed after calling this command 162 Setup Biofeedback Parameters command Modifies sound options for auditory biofeedback Biofeedback Parameters dialog 1s displayed after calling this command 163 Setup Title command Defines a running header to be printed at the top of each page for example your organization title Running Head dialog is displayed after calling this command 164 Setup Final Report command Customizes final report generator Final Report Generator Setup dialog is displayed after calling this command 165 Setup Final Report Templates command Defines and modifies list of final report templates Final Report Template List dialog 1s displayed after calling this command
76. method of recording and analysis of ERP ERD and ERCoh More information can be found in PSYTASK user manual and in the next chapters of this manual EEG window ERP window Analysis Compute ERP command Analysis Compute ERD command Analysis Compute ERCoh command Analysis Compute Wavelet command Analysis Compute Wavelet coherence command Stimuli Presentation Program List dialog Parameters For Event Related Potential Computation dialog Parameters For Event Related Desynchronization Computation dialog Parameters For Event Related Coherence Computation dialog Wavelet Decomposition dialog Wavelet Coherence dialog Choose Group Differences dialog Artifact Rejection Thresholds dialog Subject Response Processing Parameters dialog Export and Import the data Batch data processing Select List of Channels dialog Results of Averaging And Subject Response Processing dialog Graphics Page Format Dialog EEG Bandranges dialog Parameters of Bandpass Filter dialog and Equipment Configuration dialog The ERP and other mentioned above studies can be performed if EEG is recorded synchronously with stimuli presentation The additional signal from special microswitch can be recorded for estimation of reaction time and task performance The auditory and visual stimuli can be presented by PSYTASK program developed by Mitsar Ltd or by conventional stimuli presentation software for example Presentation or E Prime program An additional compute
77. over all channels in an EEG spectra window Shortcut Analysis toolbar 126 Analysis Phase Spectra command Displays EEG phase spectra for a selected channel in an EEG spectra window Shortcut 118 Analysis toolbar 127 Analysis Average Spectra command Displays average spectra in an EEG spectra window Shortcut Analysis toolbar 128 Analysis Spectra Dynamics command Displays spectra dynamics in an EEG spectra window Shortcut Analysis toolbar 129 Analysis Parameters of interaction diagrams Run this command to modify parameters of interaction diagrams used channel pairs and thresholds After calling this command List of channel pairs and parameters for EEG coherence and EEG crosscorrelations dialog is displayed to modify this parameters 130 Analysis Insert tables into report Run this command to insert detailed report into the text of MS Word window This option is available only if raw spectra are kept during computation of power spectra see Parameters of EEG spectra computation dialog After calling this command an Insert tables of spectra parameters dialog 1s displayed to define a set of inserted tables and maps 131 Pop up Menu of Spectra Window Add Map command Adds a map in Spectra window The map 1s added for selected frequency component or frequency band in dependence on displaying mode of Spectra window A frequency component may be pointed to on a graph or selected
78. photostimulation program type Rhythmic Single flashes or Pairs of flashes Duration Define duration 1n seconds for each step of rhythmic photostimulation program Frequency Set stimulation frequency for each step of the rhythmic photostimulation program If zero frequency value 15 set the photostimulator will be off during that step 224 Power set flash power for each step of rhythmic photostimulation 1f power control 1s enabled Number Of Flashes set the number of single flashes or number of flash pairs for stimulation by flash pairs Minimal interval set minimum interstimulus interval for stimulation by single flashes or flash pairs Maximal interval set maximum value for the interstimulus interval for stimulation by single flashes or flash pairs 225 85 EEG Bandranges dialog Select a list of bandranges which parameters you would like to modify Defines names limits and graph colors for standard EEG bandranges You can define up to sixteen bandranges A desired bandrange will be used in processing only if the checkbox to the left of the bandrange name 1s checked Press a Color button to display Colors dialog Press a Change button to display Parameters Of Bandpass Filter dialog changing bandrange limits and filter parameters EEG Bandranges List name Default Bandrange m c 3 T i zr M ame Deta Tes M Ma Beat Beaz
79. process the video data 35 Export video EEG dialog Export video EEG Time interval Selection Fragment 06 08 23 C Ful EEG Output data Raw EEG Filtered EEG Low cut s DC High cut Hz 70 v Match Folder C MY_VIDEGEXPORT M BaHoe Z Cancel The following options allow you to specify how the raw EEG and video EEG should be copied to another file Interval Choose an EEG interval to be copied Selection Copy an EEG interval selected by two vertical markers Fragment Copy an EEG fragment chosen from the list Full EEG file Copy the whole EEG Output data Choose a type ot output EEG data Raw EEG Copy unfiltered raw EEG Filtered EEG Copy filtered EEG Low cut s High cut Hz and Notch Hz fields allow you specify filters parameters for filtered EEG Folder Define a destination folder in which the EEG data and video files will be recorded This function is useful if it is necessary to prepare a number of video EEG examples to write them to CD The WinEEG program will copy automatically video EEG data video EEG viewer ViewEEG program and some additional service data selected folder It is possible to run this function many 160 times As the results a number of subfolders will be created the data will be copied in these subfolders File Edit View Favorites Tools Help 9 9 0 la Forwar
80. processing parameters Each task consists of a number of trials The trial is some minimal time interval during which one or more stimuli are presented and subject responds according to the instruction A digital label 1s defined to each trial according to mean of stimulus stimuli and task instruction This digital labels help to sort EEG sweeps corresponding to task trials for averaging As an example we will consider so called Odd ball task using for P300 studies During this task two different stimuli are presented a standard frequent stimulus and deviant rare stimulus The subject should press a button in response to the presentation of deviant stimulus The whole task will be divided on two parts Let trial corresponding to presentation of standard stimulus in the first part of task have digital label 1 deviant stimulus in the first part 2 standard stimulus in the second part 3 and deviant stimulus in the second part 4 We want to compute ERP corresponding to standard and deviant stimuli in the first and second parts separately Also we want to compute the ERP corresponding to standard and deviant stimuli in whole task In this case we need to define at least six averaging groups see Parameters For Event Related Potential Computation for which the ERP will be computed separately This definition can be done as shown below Standard1 1 Deviant1 2 Standard2 3 Deviant2 4 Standard 1 Deviant 2 3 4 The computatio
81. rate Hz 250 Parameters of Synchronization Port Synchronization port to which slave computer is connected 1 Baudrate 57600 Humber of bits E Parity None atop bits 1 Presentation device PSY TASE Graphics acceleration Method off Synchronization with Vertical Retrace Video Database Cancel Presentation device Select presentation device The presentation device can be PSYTASK program or EXTERNAL Select EXTERNAL option if you would like to use Presentation program or E prime program 231 Graphics acceleration Select the method of graphics acceleration that you prefer Default Turn off Access codes Enter 8 characrters access codes into these fields see above 238 Appendix1 Final Report Generation Setup Programming Language for Automatic Final Report Generation System Automatic Final Report Generation dialog uses a programming language developed for the purpose of simplifying the creation of hierarchical menus that are used for selecting specific wordings By means of this programming language you can develop practically any structure for calling wording interactive menus The developers however made their aim to design as simple and convenient a language as possible and not to create the most perfectly general hierarchical menu system A source for a hierarchical menu system is an ASCII file created by any tex
82. see Montage parameters Channels dialog b Define colors for displaying signals see Montage parameters Colors dialog c Define the referents calculated if any AvL see Montage parameters Referents dialog d Test whether channels are correctly defined or view another montage in the list see Montage parameters View dialog You can also select a montage from the list saved in the montage list If a parameter set is expected to be used many times it would be D Attention Montage parameters set by this command are applied only to the active file and not better to define it in the montage list see Setup MontageList command Next time you 106 need only select it from the list instead of entering parameters all over again Shortcut Main toolbar 65 Format Font command Modifies font for selected text in final report Font dialog 1s displayed after calling this command 66 Format Paragraph command Formats selected paragraph s in the final report The Paragraph dialog 1s displayed after calling this command 67 Recording EEG Monitoring command Use this command to start EEG monitoring that means acquiring EEG to the computer memory and monitoring it in the new EEG window without recording EEG to hard disk The command is available only if a new EEG window 15 opened see File New command To start recording EEG to hard disk use the Recording EEG Recording command
83. see Montage parameters Electrodes dialog Incorrect coordinate settings can disable mapping Shortcut Main toolbar 102 Analysis Compute ERD command Calculates event related desynchronization ERD for the active EEG file and opens an ERD window ERD can be calculated only if presentation of visual auditory was carried out synchronously with EEG acquisition After calling this command a Parameters for Event Related Desynchronization Computation dialog 1s displayed to define additional processing parameters Raw data 1s reformatted according to montage parameters before processing ERD maps choose a monopolar montage for the active EEG window before calling this command D Attention EEG reformatted to a bipolar montage cannot be mapped If you wish to view 114 Electrode coordinates are additional parameters for maps see Montage parameters Electrodes dialog Incorrect coordinate settings can disable mapping Shortcut Main toolbar 103 Analysis Compute ERCoh command Calculates event related coherence ERCoh for the active EEG file and opens an ERCoh window ERCoh can be calculated only if presentation of visual auditory was carried out synchronously with EEG acquisition After calling this command a Parameters for Event Related Desynchronization Computation dialog 1s displayed to define additional processing parameters Raw data 1s reformatted according to montage parameters before p
84. source parameters will be used in spike detection algorithm Use relative residual energy fields define a usage and limitation of this parameter Use dipole eccentricity fields define a usage and limitation of this parameter Use SVD before dipole estimation field define will singular value decomposition of multi channel EEG data will be performed before dipole source localization procedure will be applied or not If this button checked the topography of first component will be used as source data for dipole source localization procedure Attention Is the source data are independent components the singular value decomposition 1s not performed Epoch duration for SVD field defines duration of time interval corresponding to spike wave for which the multi channel EEG data is used as source data for singular value decomposition The time interval 1s selected so that the wave spike pick places at center of interval Use relative fraction of total energy of first component fields define a usage and limitation of this parameter Use spikeness of component Smax Smax sum S S N fields define a usage and limitation of this parameter The spikeness is computed according following formula Smax Smax sum S S where Smax maximal value of signal in the first component sum S S total energy of first component and N number of samples in epoch Eye blink artifact parameters fields define a usage and limitation for correspo
85. sys file In this case select ftd2xx inf file and ftd2xx sys placed into USBDRV folder Click the Finish button to complete installation 3 Audio stimulator driver installation l Insert the installation CD into your CD ROM DVD ROM Connect your Audio stimulator USB cable to an available USB port on your computer Windows automatically detects the device Found New Hardware Wizard dialog box appears Select No not this time and then click the Next button select Install from a list or specific location Advanced and then click the Next button select Search the best driver in these locations uncheck Search removable media floppy CD ROM check Include this location in the search and then click the Browse button Find USBDRV folder on your installation CD and then click the OK button Click the Next button Windows will automatically install driver Windows can ask you to specify corresponding inf and sys file In this case select Phonodrv inf file and Phonodrv sys placed into USBDRV folder Click the Finish button to complete installation 15 WinEEQG Installation To install WinEEG program 1 Insert the CD to the corresponding drive 2 Open folder with name WinEEG WinEEGE 3 Run SETUP EXE program 4 Follow the instruction on the screen Welcome ta the WinEEG Setup program This program will install WinEEG on your computer It is strongly recommended that you exit all Windows programs b
86. this case required block information is loaded to memory and the first menu of new block is processed When processing of newly loaded block menus 15 finished the control transfer command corresponding to the wording that had been selected and had caused the new menu block loading to memory In other words in this case one more menu block is processed after inserting the selected wording into text and before control transfer to next menu according to the described control transfer command described The system enables nested calls of menu blocks to be processed 1 e a block can be called to be processed from another block called beforehand to be processed But total length of all blocks that can be loaded into RAM 15 limited Note that processing of a menu block is finished in two cases either after the last menu in order 15 processed or after a break control transfer command 15 executed The system of hierarchical menu processing completes its functioning when processing of the first in order block described the hierarchical menu program 15 finished So 1f processing of any block in the program except the first block 1s not described explicitly control transfer commands such a block will not be used Finally menu header processing logic shall be fixed If no header 15 described for next menu in order it does not change the header set previously Otherwise two situations may take place If menus of one block are processed their head
87. to data files If you have EEG files or processing results stored it is always possible to restore database files but it can take plenty of effort So we recommend archiving database files regularly Note that the placement of database and EEG files is not fixed and can be modified by user So additional attention may be needed to archive and duplicate data properly Digital EEG Filtering 24 WinEEG software offers at least two methods of digital EEG filtering The first method is used to define the bandwidth and to suppress AC line interference at 50 60 Hz It uses filters with infinite impulse response IIR characteristics that most accurately simulate the RC circuits used in paper chart recorders In other words IIR filters allow EEG recordings that most closely mimic results achieved by means of paper chart recorders All the filters are first order except the 50 60 Hz notch filter so signal suppression outside the pass band 15 small 6 dB per octave Filter parameters can be set in the montage parameter list or by means of the Filters bar The disadvantage of these filters 1s that they shift signal phase The second method can be used to detect signals in a certain frequency range for example when calculating event related EEG desynchronization It uses filters with finite impulse response They provide significant signal suppression outside the bandwidth of interest and do not shift signal phase Filter parameters can be se
88. to open list of fragment names Pause EEG acquisition monitoring and recording Stop EEG acquisition monitoring and recording and to switch to EEG view mode Show hide Main Video Window Show hide Additional Video Window Change the size of Video Window Start stop recording of Video signal synchronously with EEG recording Start calibration signal 0 5 Hz 0 1 Ohm acquisition and monitoring in a new EEG window without recording to hard disk Reset DC component View calibration efficiencies of the amplifiers Measure electrode impedance 5 Turn rhythmic photo stimulation or off Click arrow to open menu of photo stimulator colors White Red and Red With Increase photo stimulation frequency Decrease photo stimulation frequency EJ ij GS Turn on off a photo stimulation program Click arrow to open photo stimulation program list Start or stop a stimuli presentation program Turn on music for auditory biofeedback Rewind the EEG window left with high speed Playback the EEG window left with normal speed To playback the EEG window right with normal speed Hee ee E To rewind the EEG window right with high speed 79 80 20 Analysis Toolbar This toolbar is usually placed in the top of the WinEEG window under the main toolbar but can be moved and is used to manage ERP Spectra and Indices windows To show or to hide the toolbar use View Toolbar Analysis To
89. to use auditory biofeedback you need to set parameters of volume control using Setup Biofeedback parameters command Mitsar Driver Installation If you have Mitsar amplifiers connected to COM port you can skip this chapter 18 Connect Mitsar amplifiers to USB Windows will automatically detect new hardware Follow the instructions of Driver Installation Wizard to install driver If Windows ask you a location of driver info file insert CD to corresponding drive and select USBDRV folder 5 If Windows ask you a location of Mitsar driver open USBDRV folder and select USBISOCH SYS file E cde m Security Key Installation A number of WinEEG functions are protected by special electronic device Security Key connected to USB To open this function it 1s necessary to connect Security Key to USB and install driver for this device 1 Insert the CD to the corresponding drive Open the ProtectionKey folder Open Drivers subfolder Run INSTDRV EXE Insert the security key into the USB connector Windows will detect a new hardware select Automatic search for the corresponding driver and allow Windows to install it press button NEXT 8 Sometimes you will need to reboot computer 9 Start WinEEG DEN E a Is you haven t Security Key you can open protected functions by Access Codes The Access Codes are distributed by Mitsar Ltd Mitsar will give you these codes by requirement if you have purchased the corresponding hard
90. video EEG data A Attention ViewEEG program requires DirectX 9 0 instalation 22 Search for EEG events Sometime it is necessary to find quickly such called EEG events WinEEG program is able to finds simplest events time intervals during which the absolute voltage of selected EEG channel 15 higher the defined threshold To start this procedure use Edit gt Find command 23 Automated spike detection 56 To automatically find and mark spikes use a command Analysis gt Spike Detection All founded spikes will be marks by vertical dot lines and spike s labels in the bottom of EEG window name of channel in which the pick voltage was maximal is printed in spike s label f WinEEG DO0007473 EEG 10 37 37 Ioj x PIE amp amp BEXAR AE f m be uj nmi S Sloco T Pr HK Zw 4 4 gt BE Speed 30 mms Gain 200 LM Baseline 0 00 u H Reset Low Lut s 0 3 0 53 Hz High Cut Hz 4 TIE 04 WE ME EI M I Total number of spikes 58 For Help press F1 L 56 9 R 56 9 T R L 0 000 5 R L 2 The EEG window could be divided into two parts by horizontal splitter this case EEG will be displayed in upper parts and position of all founded spike will be output in lower part by vertical bars The horizontal scale 15 selected thus as the whole array of spikes can
91. which presents video data for active EEG file Shortcuts Main Toolbar EAM 60 View Decrease Gain command Run this command to decrease gain vertical EEG scale Shortcuts Main Toolbar Keys Numpad Minus 105 61 View Increase Gain command Run this command to increase gain vertical EEG scale Shortcuts Main Toolbar Keys Numpad Plus 62 View Decrease Speed command Run this command to decrease speed horizontal EEG scale Shortcuts Main Toolbar Keys Numpad Divide 63 View Increase Speed command Run this command to increase speed horizontal EEG scale Shortcuts Main Toolbar ez Keys Numpad Multiply 64 View Select Montage command Use this command to choose or to modify montage for an EEG file signals are always acquired and recorded in monopolar form relative to the electrodes connected to A and A2 connectors The bandwidth for acquisition and recording 1s maximally wide 0 15 70 Hz for Mitsar EEG 3 Remember that 0 15 Hz frequency corresponds to 1 0 sec time constant This recording method allows conversion of raw data to any mono or bipolar montage with any bandwidth during subsequent viewing and processing The Montage parameters dialog consisting of five tabs 1s displayed after calling this command Go from tab to tab to define the following montage parameters a Define a list of channels and their parameters such as gain bandwidth baseline
92. x Video Compressor Microsoft MPEG 4 Video Codec 1 Eompressar properties Audio Compressor MPEG Layer 3 Save audio track Flee ooo Total files Play source Compression Play destination Cancel Stop The following options allow you to specify how the video files should be compressed Video Compressor Select appropriate video compressor from a list The best choice in mane cases is Microsoft MPEG 4 Video Codec V1 or Microsoft MPEG 4 Video Codec V3 Audio Compressor Select appropriate video compressor from a list The best choice in mane cases is MPEG Layer 3 Save audio output stream Check this button 1f you would like to keep audio signal in resulting video file Compressor properties Select and modify compressor properties Play source Play back source video file Play destination Playback compressed or re compressed video file The raw video file will be compressed before playing back function will be started This option helps to choose the best compressor before beginning the video compression procedure Stop Stop playing back function OK Start video compression procedure Attention Not all existing compressor from list can be compatible with source video files 159 Attention A number of compressors can unrecoverable decrease a quality of video A signal Attention A number of compressors will take a lot of time to
93. 15 47 m Ful EEG file Method Use crosszern Use local extrema X of stantard deviation Absolute rn my c Interval Define the EEG interval to be processed Selection Interval between two vertical markers Fragment Fragment selected from the list Full EEG file The whole file Method Choose an algorithm for EEG indices calculation Use Zero Crossings Select halfwaves by isoline cross points Use Local Extrema Select halfwaves between a local minimum and its adjacent maximum or a maximum and its adjacent minimum Detection threshold Define halfwave detection threshold to filter noise of Standard Deviation Thresholds will be calculated for each separate channel from standard signal deviation Absolute uV One common threshold 15 set for all channels in uV 176 48 Parameters Of EEG Spectra Computation dialog The basic definitions and algorithms are described EEG Spectra section Here only processing parameters are listed Parameters of EEG spectra computation X Time interval Selection Fragment 18 47 00 Ful EEG file Channels EEG only Epoch lentah Time window C Square Bartlett f Hanning Welch Upper spectra frequency Hz fea Artefacts elimination 71 second 16 seconds 2seconds C 32 seconds 4 seconds B4 seconds
94. 166 Setup Video recording command Select video capturing device Set and modifies parameters of capturing resolution frame rate signal format and on line compression Video recorder parameters dialog is displayed after calling this command 167 Setup Equipment Parameters command Sets and modifies hardware configuration Equipment Configuration dialog is displayed after calling this command 168 Window Cascade command Cascades all open windows Shortcut Main toolbar 169 Window Tile Horizontally command Tiles all open windows horizontally Shortcut Main toolbar 124 170 Window Tile Vertically command Tiles all open windows vertically Shortcut Main toolbar 171 Window Arrange Icons command Arrange the icons for minimized windows at the bottom of the main window 172 Window Split command Splits the active window into two panes 173 Window 1 2 command WinEEG displays a list of currently open document windows at the bottom of the Window menu Check a document from this list to make its window active 174 Help Help Topics command Calls WinEEG help 175 Help About WinEEG command Displays copyright and version number for your copy of WinEEG 176 Context Help command Use the Context Help command to obtain help on a window or a control within WinEEG When you click Context Help button on the main toolbar the mouse pointer will change to an arrow and question
95. 18 p lt 0 855 0 07 p 0 859 2 72 p lt 0 008 0 34 p 0 358 0 17 p 0 621 0 57 p 0 002 0 20 p 0 721 0 72 p lt 0 362 0 54 p 0 248 0 97 p lt 0 546 0 20 lt 0 002 0 16 p 0 017 0 06 p 0 848 0 30 p lt 0 000 0 89 lt 0 293 0 61 p 0 002 0 74 p 0 488 0 03 p 0 782 0 39 p 0 276 0 12 p 0 684 0 32 p 0 773 1 58 p 0 002 0 34 p 0 363 6 56 p 0 115 m NO AN 5 pe NO I ON 5 A O N 92 NO 5 4 ON 092 3 IN O2 ON A ON QN 4 5 A N 4 0 44 p 0 120 0 34 p 0 284 0 64 lt 0 002 0 44 p lt 0 026 1 65 lt 0 000 0 98 p 0 174 0 75 lt 0 671 20 p 0 702 0 45 p 0 365 0 13 p 0 790 0 05 p 0 767 0 89 p 0 255 1 17 p 0 002 1 68 lt 0 219 209 0 26 p 0 229 0 44 p 0 000 0 53 lt 0 202 0 38 p lt 0 089 1 34 p 0 240 0 76 p 0 282 2 25 lt 0 370 0 20 p 0 660 0 25 lt 0 421 0 17 p 0 558 0 49 p 0 408 0 91 p 0 145 0 42 lt 0 244 2 74 p lt 0 082 0 21 p 0 267 0 23 p lt 0 692 0 01 p 0 955 0 48 lt 0 014 0 16 p lt 0 840 0 53 p 0 450 2 09 lt 0 313 T6 AvW 0 17 p 0 000 0 20 p 0 553 0 66 p 0 167 0 63 lt 0 251 0 92 p 0 144 0 22 p 0 021 0 46 p lt 0 598 OI AvW 0 21 p 0 526 0 15 p 0 000 0 96 p 0 000 0 66 p 0 322 0 74 p 0 050 0 07 lt 0 312 3 61 p 0
96. 35 The Theta spherical coordinate must in the range from 0 to 90 degrees the Phi coordinate from 0 to 360 degrees Montage parameters X Channels Referents Colors View Electrodes Montage name Theta Phi Theta Phi Theta Theta Phi Theta Phi 104 72 m ref C Pojo v6 M Fafa M Fef o M m ra r taf m cafe ie m ocj o 36 o m of fo 15 2 56 Fw 25 W Pe ss 15 re 72 24 1 252 72 2 cb 26 54 adafo fiez Ad4 so 198 aajao 342 Madj fo Biol Bint Ecg Bi4 Bio Biog Biz Connect channels Al and Az Connect Channels A1 and 2 Check this option if you are not going to acquire EEG from different channels in relation to different ears or to the average ear If the option is checked A1 and A2 nets are connected directly the amplifier block so that there 1s no necessity to connect two electrodes to these nets or to use a jumper 36 7 Transformation Matrix for Weighted Average Referent dialog Change transformation coefficients if needed Transformation matrix for weighted average referent 2 Fz F4 F8 T3 Cz C4
97. 8 aah HT c LR 96 I RUN E FAE Ec 99 ZO ule PEoView COMMON G o EEE uet IE 99 DIC Ei Ra TE EO uM 99 VL IZ COTTA 99 DO dcs MEI oh 99 99 VASE TUE 101117175 cT 99 PA UNE OIL COIT ES 100 100 C Ear COTINO AS NER 100 PAS E DTE SEEE TALU CONUN L sas RE TECH 100 Clear AL COMING d cmm uides 100 Sd Edit CAear AL Video Dala COMMMONG essetis beet eise tutos bestiae ttt ur ecd ie 100 PoR TP DEN 100 Je DIGQCC sic 101 Da Sedi Pd SCLCCLION COMMOANG 101 mdt COMMANG 101 DO Add Label COMMGANG s wird cower 101 D
98. 8 E IJ 6 6 I E Ec E Copy window contents and paste it into MS Word to current cursor position on instead selection 81 Insert tables of EEG spectra parameters into MS Word 21 Status Bar The status bar is located at the bottom of the WinEEG window To show or to hide it run View Status Bar command The left part of the status bar displays a brief description of a menu command a toolbar button a Filters bar control an Input Control bar control or a Channel Names bar control pointed to by the mouse cursor used e g to preview a software action by hesitating with the mouse cursor on a command item to ensure the intended action will take place when the mouse button 1s clicked On the right side of the status bar there are fields displaying values for a selected EEG channel or spectrum or ERP parameters evaluated at the marker and indicating states of the locking keys Field Description For EEG window Instantaneous EEG value at left marker Instantaneous EEG value at right marker time interval between markers Difference between instantaneous values at the markers Peak to peak EEG amplitude for selected interval difference between maximal and minimal values Average signal frequency Photostimulation frequency For EEG spectra window 22 Measured parameter value 2 99 V T F P Indicator CAP NUM SCRL Frequency at the marker position For ERP window Measured potential value uV
99. Analysis Copy EEG Analysis Copy Spike Analysis Copy EEG to report Analysis Copy Spike to report and dialogue windows Spike detection and Average spike calculation Both monopolar and bipolar montages could be used for EEG to which automated spike detection is applied But dipole source parameters will be not estimated for EEG at bipolar montage 40 Using the Normative Database There are many ways to compute spectra and ERP using different additional parameters of processing But there is only one way to compute spectra and ERP using correct parameters WinEEG program includes a number of means helps to perform processing that is compatible with database Each processing consists of a number of steps Warning Only EEG files including standard set of 19 electrodes Fp2 F7 Fz F4 F8 T3 C3 Cz C4 4 T5 P3 Pz P4 O1 O2 is compatible with database spectra The EEG files should include also ECG channel used to record Button signal for ERP database This signal is used to measure performance parameters EEG files could include additional channels These channels will be excluded from processing Spectra computation and comparison 1 Open EEG file 2 Change montage to Database montage B pa P b bb Monopolar 1 J Monopolar 2 Monopolar 1 4verage x High Cut H Monopolar 2 Average 20 1 T Bipolar 1 ______ 5 MENME Bipolar
100. Ctrl pressed Otherwise notch will be changed for all channels that are visible in the montage 17 Baseline offset On the Filters bar click up down arrows of the Baseline field to change baseline To change baseline only for a selected channel hold Ctrl pressed Otherwise baseline will be changed for all channels that are visible in the montage 18 Adding or clearing user labels To add a user label run the Edit gt Add Label command or press Add Label button on the main toolbar and choose label type from the popup menu The cursor will change its shape to Place cursor at the desired position in the EEG window and click When adding a Channel or a Contour label its length can be adjusted by dragging and releasing the left mouse button To find a certain label use Find next left label and Find next right label buttons on the main toolbar To delete a label run Edit gt Delete Label command or press Delete Label button on the main toolbar The cursor will change its shape to Place it on the label to be deleted and click the left mouse button Label button on the main toolbar to return to default mode The cursor will return to its standard shape D Attention After you have finished dealing with labels press the Add Label or Delete 55 19 Adding and excluding trials for ERP calculations Some EEG trials intervals can contain artifacts They can be manually excluded from the process of ERP calculation
101. D Attention Amplifiers are calibrated by the manufacturer before metrological certification Shortcut Input Control toolbar 79 Recording Impedance command Calls the function of electrode impedance control Electrode Impedance dialog is displayed after calling this command 109 Shortcut Input Control toolbar 8 80 Recording Rewind Back command Run this command to rewind EEG window Shortcut Input Control toolbar 44 81 Recording Play Back command Run this command to play EEG window backwards Shortcuts Input Control toolbar 4 Keys ALT Left Arrow 82 Recording Play Forward command Run this command to play EEG window forward Shortcuts Input Control toolbar Keys ALT Right Arrow 83 Recording Fast Forward command Run this command to Fast Forward the EEG window Shortcut Input Control toolbar P 84 Analysis Final Report command Opens a Final Report window for the active EEG file When opening the Final Report window WinEEG is looking for a corresponding file in the EEG database working directory a RTF file with the same name as the active EEG file If the final report file 1s found it is opened in the Final Report window and can be read and edited If not found a new file 1s created and Patient Card contents are inserted in it automatically Shortcut Main toolbar 85 Analysis Signal Parameters command Open Parameters of Signal dialog window Th
102. D field Patient ID field contains a text string that must be present in the corresponding field of the database record see also ID field Diagnosis field contains a text string that must be present in the corresponding field of the database record see also ID field Date of Birth From To fields define the range for dates of patients birth for example from 01 01 1950 to 31 12 1959 To enable automatic search by date use DD MM Y Y Y Y date format Sex field signs patient sex M or F Editing note what about trans gendered individuals 143 Address field contains a text string that must be present the corresponding field of the database record see also ID field Note field contains a text string that must be present in the corresponding field of the database record see also ID field Check Existed in the working folder option to select only records corresponding to files existing in the working folder Attention Using this condition may significantly slow down the database search Check Backed up option to select only records corresponding to EEG files that have been backed up at least once Press OK button to accept search conditions Press Clear button to clear all fields 12 Backup Data To Archive dialog To backup a data file means to copy it to an archive on some disk If the data file 15 larger than free space on the disk for example when copying on a floppy it will be split into several parts and th
103. Driver installation 1s standard procedure performed by Windows XP To install driver user should perform a number of standard steps listed below 1 Mitsar 201 amplifiers driver installation 1 Insert the installation CD into your CD ROM DVD ROM 2 Connect your amplifiers USB cable to an available USB port on your computer Windows automatically detects the device Found New Hardware Wizard dialog box appears Found New Hardware Wizard Welcome to the Found New Hardware Wizard Windows will search for current and updated software by looking an Your computer an the hardware installation or on the Windows Update Web site with your permission Head our privacy policy Can Windows connect to Windows Update ta search for software C Yes this time only C Yes now and every time connect a device Click Next to continue lt Back Cancel 3 Select No not this time and then click the Next button Found New Hardware Wizard This wizard helps you install software For Electra Encephalagraph with USB If your hardware came with an installation CD lt nr floppy disk insert it now What da you want the wizard ta do C Install the software automatically Recommended Click Next ta continue 12 4 Select Install from a list or specific location Advanced and then click the Next button Found New Hardware Wizard Please choose your search and installation options
104. EEG signal quality depends on paying special attention to the placement of common point and reference electrodes Attention Common point and reference electrodes to be placed in case whether 2 Connect the electrodes to their respective inputs on the front panel of the amplifier block 3 Set the electrode impedance checking mode using Recording Impedance command If the impedance value is satisfactory less than 5 KOhm close the Control of Electrode Impedance dialog Otherwise re install those electrode s showing excessive impedance 4 Run the File New command Fill in the patient card choose a montage and check it When these actions are completed successfully a new EEG window will be displayed on the screen 5 Run the Recording EEG Monitoring command Visually check the quality of the live EEG displayed in the new window If any channel is acquiring EEG poorly re install the corresponding electrode s Check EEG acquisition quality using a monopolar montage without averaging 6 Run the Recording EEG Recording command to start recording signals to a file 7 Run the stimuli presentation program using the Recording Stimuli Presentation Program command 8 Use the Recording Pause command to temporary stop EEG recording and stimuli presentation 1f it is necessary Use Recording EEG Monitoring command to continue EEG recording and stimuli presentation 9 Stop EEG acquisition using the Recordi
105. EG window Scale Printing 13 073 Time scale text S elected time scale C 1 second step 300 milisecond step Channel base lines Calibration in channel names User labels dq of 4 d of Cancel Ampy Help Show Check additional graphical elements to be shown in EEG window Channel Baselines Horizontal dashed lines showing zero level for each channel in EEG window Calibration In Numbers showing gains uV cm to the right of the channel 218 Channel Names names in the Channel names bar User Labels Graphic object marking EEG interval of specific interest to user 76 Preferences Scale dialog Monitor Size Choose the display size corresponding to your monitor Then using the two sliders adjust the square size so that its width and height are exactly 30 mm This will provide proper horizontal and vertical screen scaling Use sliders to fine tune EEG scaling on the screen Preferences EEG input EEG window Scale Printing Monitor size x mm 219 79 Preferences Printing dialog Paper orientation for EEG window Choose paper orientation for printing EEG Paper orientation for EEG mapping window Choose paper orientation for printing EEG maps Paper orientation for spectra window Choose paper orientation for printing EEG spectra Paper orientation for indices window Choose paper orientation for p
106. Elia EEG observation B1 256 15 05 2003 Gamper Aino EEG observation 015m B2 253A0 16 06 2003 Fargatzi Roman EEG observation T1 Ab B1 5 11 Ls liner FEG f 4 ID 82 26080 Date 16 08 2003 Time 10 12 15 Investigation EEG observation Cancel Patient name Conzett Leonard Patient Diagnosis Firid Date of birth 23 07 1999 Sex m Add Address Promenade 125 7260 Davas Dorf DE Mote Backup Restore Report Number of records 242 S elected 7 Fie p0000305 EEG Size 4245268 Backuped Mame Each database consists of an investigation list file and data files Records in the investigation list file include patient card data file name and service information A record in the database corresponds to a single data file Data files can be placed either a working directory folder on the hard disk or in archives on removable drives The working directory for data files also can be placed on removable drives of high capacity such as magneto optical diskettes Data 1s searched over the investigation list file which significantly simplifies and accelerates selecting records of interest WinEEG Database functions allow 1 Adding a new file for example an EEG file after an investigation or a spectra file after processing to the database See File Save command 2 To add a previously create
107. G on a paper sheet and putting it 1n a bookcase you can be absolutely sure it will be stored safely unless a catastrophe happens or an untidy colleague accidentally throws the EEG record in a dustbin We of course assume that you have effectively arranged your EEG records so you can find any particular one among all the others quickly and easily Paperless technologies help avoid storing kilometers and kilograms of paper on bookshelves and also simplify searching for necessary records But it 1s too soon for you to relax Unfortunately practically no operating system enables 100 safe data storage Moreover magnetic media are sensitive to damage by different external factors either mechanical or electromagnetic Operating systems and environments on a computer hard disk are even more sensitive given additional damaging factors such as computer viruses abuses hardware especially hard disk and software failures If you think your computer performance 15 stable enough don t rush to calm yourself Remember your friends and colleagues who have been working on a PC for a year or longer Do they ever complain that documents graphs tables or other data having taken plenty of time to obtain were lost or cannot be read You should listen to them because your unique experimental data from one time procedures or your own creative results 1s the most valuable information of all Modern computer technologies allow development of highly robust s
108. G Recording commands Shortcut Input Control toolbar 71 Recording Turn On Off Calibration command Use this command to start acquiring calibration signal 0 5 Hz 0 1 Ohm to the computer memory and monitoring it in the new EEG window without recording the signal to hard disk The command 15 available only if a new EEG window 15 opened see File New command To stop calibration signal acquisition and to start EEG monitoring run this command once more Shortcut Input Control toolbar 72 Video recording command Use this command to start recording the video data to hard disk The command 15 available only if a new EEG window 15 opened see File New command To stop recording the video data and to resume video monitoring mode run this command once more Shortcut Input Control toolbar 73 Reset DC Filter command not in a menu Use this command to reset constant component of the signal It can be necessary if extended band amplifiers are used Output potential of these amplifiers can contain a significant DC component as a result of motor artifacts or after electrodes are changed slowly returning to initial state The command 15 used to speed up the process of resetting amplifiers to initial state How to Run Input Control toolbar 74 Recording Photostimulation On Off command Use this command to turn rhythmic photostimulation mode on or off The command 15 available only
109. P alpha P beta P delta P theta and displayed whenever Formula mapping were selected 86 13 Averaging Groups Bar Active Groups 1 ac e 2 10 3 hoge 4 None Averaging frequence bandrange This bar is located at the top of the ERP Window and is used to choose which groups may be displayed and to select an active group 14 ERP Bar This bar 1s located by the right edge of the ERP Window and 15 used to set graph or map size vertical and horizontal scaling for graphs color scale sensitivity and time readouts for ERP mapping Time interval From m Duration ms To the end Maps From m Step ms 4 Number 10 Baseline Baseline Mot used Length m 50 30 Video Window 87 The video data corresponding to position of lider see EEG window is displayed in this indow Use command View Video Window jo Show hide this window Menu Commands File Menu Commands 88 The File menu offers the following commands New Open EEG Database Open Another Database EEG Spectra EEG Crosscorrelations EEG Indices ERP EP File ERD File ERCoh File BioFeedBack File Open File Import Data Close Save Save AS Compress video files Export Data Export EEG and Video EEG Print
110. P window offering a choice of four trial groups to be depicted on ERP graphs See Averaging Groups Bar to learn how to use it 53 View Toolbar gt Customize Main Toolbar command 104 Run this command to customize main toolbar by adding deleting or moving buttons Customize Toolbar dialog appears on calling this command 54 View Toolbar gt Customize Input Control Toolbar command Run this command to customize Input Control toolbar by adding deleting or moving buttons Customize Toolbar dialog appears on calling this command 55 View Toolbar gt Customize Analysis Toolbar command Run this command to customize Analysis toolbar by adding deleting or moving buttons Customize Toolbar dialog appears on calling this command 56 View Status Bar command Show or hide status bar that displays hints for menu items or bar buttons along with indicators for Caps Lock Num Lock and Scroll Lock keys See Status Bar to learn how to use it 57 View Channel Names Bar command Run this command to show or hide Channel Names bar where a channel in the active EEG window may be selected for additional actions See Channel Names Bar to learn how to use it 58 View Video Window command Run this command to show or hide Video window which presents video data for active EEG file Shortcuts Main Toolbar 21 59 View Video Window size command Run this command to change a size of Video window
111. Page Setup Print Preview Print Setup Exit Edit Menu Commands Creates a new EEG file Opens a source data record from the database Opens a file from the database of processing results an EEG spectra file an EEG auto and crosscorrelation file an EEG indices file an ERP file an event related EEG desynchronization file an event related EEG coherence file a biofeedback file Opens a file from hard disk containing source EEG or processing results Converts data from another format to WinEEG format Closes the active file saves the active file under its current name saves the active file under another name Compress or recompress video files by selected method Writes the data file in ASCII binary or another format Copy selected part of EEG record to another file Prints the active document Sets parameters for a page to be printed Displays the document as it will be printed Chooses a printer and sets parameters for it Quits WinEEG The Edit menu offers the following commands Undo Cut Copy Paste Clear Select All Clear All Clear All Viveo Data Find Replace Find Selection Find Fragment Add Label Delete Label Patient Card Undoes the previous edit action Mark selected time interval of EEG record as artifact Removes the selection and places it on the clipboard Copies the selection or the window content to clipboard Inserts the clipboard content at the current cursor position in th
112. RP CPU Celeron 850 RAM 128 Mb HDD 20 Gb IDE Video Adapter SVGA 16 Mb AGP accelerator Monitor Le Floppy drive 3 5 1 44 Mb CD Writer 4x4x 32 Printer HP Laser Jet 1100 There are no warranties that video EEG option will work properly Effective to perform different EEG ERP ERD processing efficiently CPU Pentium III 800 and higher RAM 256 Mb HDD 40 Gb Video Adapter SVGA 32 Mb AGP accelerator Monitor 17 Floppy drive 3 5 1 44 Mb CD ROM 40 x CD Writer 9 4 32 HP Laser Jet 1100 Professional to enjoy work CPU Pentium IV 2000 and higher RAM 512 Mb HDD 80 Gb Video Adapter SVGA 64 Mb AGP accelerator Monitor 19 Floppy drive 3 5 44 Mb CD ROM CD Writer Printer 10 40 x 8 4 32 HP Laser Jet 1100 For Video EEG this computer provide synchronously recording of EEG video from one or two cameras with on line MPEG4 compression and audio with on line MPEG3 compression during at least 48 hours CPU RAM HDD Video Adapter Sound card Monitor FDD DVD Writer Printer Pentium 3000 and higher 512 Mb 120 Gb SVGA 64 Mb AGP accelerator Any 19 3 5 1 44 Mb 4 32 HP Laser Jet 1020 D Attention DirectX 9 0 should be installed 11 Amplifiers and other devices drivers installation Corresponding driver should be installed for any device plug in to USB input If you have Mitsar amplifiers connected to COM port do not read this chapter
113. RP bar in an ERP window Biofeedback bar in a biofeedback window Calculator ratio formula bar a spectra window an indices window or a biofeedback window Averaging Group Bar in an ERP window Modifies Customize MainToolbar button set Modifies Input Control toolbar button set Modifies Analysis toolbar button set Shows or hides the status bar Shows or hides the Channel Names bar Show hide Video Window Change a size of Video window Decrease vertical scale in an EEG window Increase vertical scale in an EEG window Decrease horizontal scale in an EEG window Increase horizontal scale in an EEG window Chooses or modifies a montage channel list filters gain color electrodes etc The Format menu offers the following commands Font Paragraph Recording Menu Commands Chooses a font Formats a paragraph The Recording menu offers the following commands EEG Monitoring Starts resumes EEG monitoring without recording data to the hard disk Turn On Off Calibration Turns on off calibrating signal EEG Recording on off Starts recording a new EEG fragment to the hard disk Pause Pauses EEG acquisition Stop Stops EEG acquisition and switches to signal view mode Video Recording Reset DC Filter Photostimulation on off Photostimulation Program stimuli Presentation Program Turn on off Music Calibration Impedance Rewind Back Play Back Play Forward Rewind Forward Analysis Menu Co
114. SOFTWARE FOR ELECTROENCEPHALOGRAM ACQUISITION AND PROCESSING WinE EG Version 2 7 User Manual St Petersburg Russia 2006 d B ed 9 AMPLIFIERS AND OTHER DEVICES DRIVERS INSTALLATION 11 1 MITSAR 201 AMPLIFIERS DRIVER INSTALLATION 0 000000 00000000000000 11 2 VIDEO JAMMERIDRIVERSINSPALLATION added esae uode e neut testae 13 3 AUDIO STIMULATOR DRIVER INSTALELATION 55 14 WINEEG INSTALLA TION aaia 15 ae 17 4 18 ve eM III Na 20 HEEG VIO INTO BAIN 20 2 M M M M MC D i 20
115. SPIT COMMING iu eei pP DDR EE 124 VAS ATTI E trt 124 T 74 Help Hein TODICS qtia ERE tte Sanu 124 TI Help About COMMANA cee 124 176 CONTENT 124 UP NE VAIO TRAY qc 124 TT cc SOV OUD STET E 125 EU 125 150 Move Command SYSTE 125 MUUE COMMON A 5 Vstenm TENU aise 125 Gonmana system dte a 126 183 Next command document window System 126 184 Previous command document window System 126 103 CHOSE INCITU e devenit eventa p eade 126 100 2ROSTOFE COMIMGNG System mmQRID vo inia 126 DIALOGS RI
116. T F4 24 Edit Undo command Undoes last change in the final report Shortcuts Main Toolbar Keys CTRL Z ALT BACKSPACE 25 Edit Cut command 100 Mark selected time interval of EEG record as artifact ff EEG window 15 active Cut selected text to the clipboard if Final report window is active The command is not available unless text 1s selected Shortcuts Main Toolbar Keys CTRL X 26 Edit Copy command Copies selected text in the final report or the active window EEG waveforms spectra graphs ERP maps etc to the clipboard Previous clipboard content is replaced Shortcuts Main Toolbar Ee Keys CTRL C 27 Edit Paste command Pastes the clipboard content to the final report The clipboard may contain text or graphic objects EEG waveforms spectra graphs ERP maps etc Shortcuts Main Toolbar Keys CTRL V 28 Edit Clear command Deletes selected text from the final report or a selected fragment from the EEG record Shortcut Main Toolbar 29 Edit Select All command Selects the whole final report text 30 Edit Clear All command Clears the whole final report text 31 Edit Clear All Video Data command Clears the whole video data Video Data Deleting dialog is displayed after calling this command 32 Edit Find command 101 Finds evens in EEG record based on threshold criteria Find events dialog is displayed after calling this command Finds a text strin
117. To choose a channel press the corresponding button on the Channel Names bar You can also choose channels using Arrow Up and Arrow Down keys For more detailed view of a single channel use one channel display mode To toggle between one channel and multichannel modes place cursor on a button on the Channel Names bar or on the corresponding EEG curve and double click left mouse button 9 Comparing EEG for different channels To compare EEG recorded from different sites you can place one curve over another while viewing Place cursor on a button on the Channel Names bar and drag vertically with left mouse button pressed The curve depicting the selected channel also will move in the vertical direction When left mouse button 1s released the selected curve automatically returns to its original position 10 Measuring channel parameters Channel parameters are measured automatically and displayed in the status bar fields Note that all parameters are not always measured The selected interval see 8 above should be 100msec 10sec long and visible in the EEG window The following parameters are computed automatically EEG value at the left marker 1 0 1 EEG value a the right marker R 0 1 V Time interval between two markers T R L 0 1 sec Difference between EEG values at the two markers R L 0 1 EEG amplitude 1 difference between maximal and minimal values in the selected interval 0 1 V Average signal frequenc
118. Update button to read new stimuli presentation program list from a floppy if it was recorded by means of the PSYTASK program that it 15 to be installed on See PSYTASK Manual or Help Press the Reread button to read a new file directly from the stimuli presenting computer connected to the EEG acquiring computer by an additional cable between their COM ports PSYTASK must run on the stimuli presenting computer in the slave mode Command line PSYTASK 5 Attention If any parameter of stimuli presentation in the PSYTASK has been changed the stimuli presentation program list should be updated otherwise ERPs will be incorrectly calculated Turn on EEG recording Check this option to start recording EEG to hard disk If the option 1s unchecked the data will be only acquired and monitored this mode can be useful for testing a stimuli presentation protocol or for training the patient 31 Update task list from slave computer dialog The dialog displays dynamics of reading task list from the presenting computer Press Cancel to stop reading the stimuli presentation program list The old list 1s not saved 165 32 Checking Impedance Of Electrodes Control of impedance of electrodes 40 kOhm kOhm 3l k hm kOhm 20 kOhm 15 k hm k hm 3 k hm kOhm Depicts impedance of electrodes by means of color The color impedance scale is shown on the right Attention After every manipulation with electrode
119. a Sp Alta 3 000 Betal 3 000 SD SD 3 000 Betas 3 000 Gamma 3 000 Sp SD Comparison of average frequence Hz 0 33 p 0 164 0 0 28 lt 0 532 0 67 lt 0 031 0 17 p lt 0 742 9 70 lt 0 118 Fpl AvW Fp2 AvW F7 AvW F3 AvW Fz AvW F4 AvW F8 AvW 3 AvW C3 AvW Cz AvW C4 AvW T4 AvW T5 AvW 4 ON 4 ON A O2 NO NO NO 3 IN BEN O2 4 A C ON 66 p lt 0 002 0 19 lt 0 058 ON 3 IN NO 4 I 3 AN i9 ON 99 4 3 A 092 I N 3 A 092 952 3 DA O ON 3 AN BEN Ne O 3 5 BEN ON 3 I NO OO I 2 ON ON NO 2 IN ON ON NO o2 3 IN N N I 092 NO 092 ge A ON 3 CQ ON 0 20 p 0 116 0 48 lt 0 002 0 62 p 0 172 0 28 p 0 573 0 39 p 0 390 0 01 p 0 984 2 70 p 0 000 0 21 p 0 454 0 41 p 0 002 0 90 p 0 019 0 12 p 0 744 0 90 p 0 301 0 11 p 0 769 2 14 p lt 0 270 0 23 p 0 007 0 15 p 0 488 0 21 p 0 083 0 27 p 0 024 0
120. a channel for processing The channel also can be selected by the Up and Down arrow keys Suggestion to compare EEGs recorded from different sites you can move a channel the vertical direction while viewing Place cursor on a button on the Channel Names bar and drag vertically with left mouse button pressed The curve depicting the selected channel will also move the vertical direction When the left mouse button is released the curve will automatically return to its original position Select an EEG interval and run View Toolbar Maps command to view two potential or spectral power maps corresponding to each of the vertical mouse cursors Left and Right 27 Dipole Window 10 Biofeedback Bar working Setup ramma window Mode Wiavetorme Bar 2 S enselivily Middle 0 50 m Minimum Refresh Smoothing Artefacts p 84 The dipole source localization and dipole parameters id displayed in this window relative residual energy ECC eccentricity Use buttons Copy or Copy parameters to copy this picture or table of dipole parameters into clipboard This bar is located at the right side of the Biofeedback window and is used to set a number of additional parameters for EEG acquisition and processing during biofeedback sessions Use buttons of the Working Mode group to mark EEG fragment
121. a new window You can open several EEG indices files simultaneously Use the Window menu commands to switch between opened files See Window 1 2 command As you run this command a Record List Dialog is displayed for searching EEG indices files in the database or in the archive 6 File Open Another Database gt ERP EP File command This command opens an event related potential evoked potential file from the database in a new window You can open several ERP files simultaneously Use the Window menu commands to switch between opened files See Window 1 2 command As you run this command a Record List Dialog 1s displayed for searching ERP files in the database or in the archive 96 7 File Open Another Database gt ERD File command This command opens an event related EEG desynchronization ERD file from the database in a new window You can open several ERD files simultaneously Use the Window menu commands to switch between opened files See Window 1 2 command As you run this command a Record List Dialog is displayed for searching ERD files in the database or in the archive 8 File Open Another Database gt ERCoh File command This command opens an event related EEG coherence ERCoh file from the database in a new window You can open several ERCoh files simultaneously Use the Window menu commands to switch between opened files See Window 1 2 command As you run t
122. a value from the High Cut Hz list The notch parameters for all selected channels can be set by selecting a value from the Notch Hz list The baseline for all selected channels is changed by pressing arrow buttons to the right of the Baseline list EEG Window The global field power is calculated according a formula Attention If active electrode is defined as GFP the global field power will be displayed in GFP 40 22 gt ui TY i l j l Modifying Channel List Press Add button to add a new line to the end of the montage channel list Press Insert button to add a new line above the currently selected one Press Delete button to delete all selected lines from the montage channel list 3 Montage Parameters Referents dialog Use the Channels tab of the Montage Parameters dialog to define lists of channels to be included when calculating Av AVL AVR and AvW referents You can also choose a montage from the montage list see Setup Montage List command Montage Name This field initially contains the name of the default montage from the montage list Use down arrow button to select a different montage from the list for use as a new default You can also rename the selected montage The Left Average AvL group defines the list of channels for AvL referent To calculate the AVL referent signal the encephalograms of the marked checked channels are averaged The Right Average AvR group defi
123. absolute value microvolts or as a relative one In the relative case the standard deviation of the signal potential about zero 1s calculated and half of this value 15 accepted as the threshold Finally raw EEG recordings are not used for processing only those reformatted and filtered according to the user selected parameters established the active montage Therefore EEG indices calculation results depend on the processing parameters set using the EEG Bandranges command or in the Parameters of EEG indices computation dialog and also on the montage parameters While defining limits of the EEG bandranges should not cause any difficulties selecting parameters for the indices can be quite highly counter intuitive If the threshold 15 too low could be as low as zero half waves will be selected if there are any fluctuations of the signal Taking into account that real amplifiers have some level of self noise and that 27 there 1s also other noise detected a number of cases such a low selection of threshold may well lead to detection of high frequency oscillations including some with a frequency exceeding 30 Hz On the other hand if a high threshold value 15 set low amplitude oscillations beta rhythm most likely will be lost In addition these algorithms are unstable the presence of circuit noise if its level is significant So it is impossible to offer unified recommendations for choosing the optimal amplitude
124. act 1f an ERP absolute value for any channel and for any bin exceeds Level value Channels define channels to be processed for artifact analysis Possible options are process all channels Only EEG process only EEG channels Only Bio process only Bio channels Table the defined channel table is used and Level value 15 ignored Don t Reject artifacts are not eliminated Use the Threshold for channels button to define a list of channels to be processed and individual threshold values for artifact analysis This button calls Artifact Rejection Thresholds dialog Synchronization Several stimuli are allowed to be presented during one trial Also pre and poststimulus intervals may change from trial to trial even if trials belong to one averaging group In this case it 1s necessary to set additional parameters to synchronize trials correctly when averaging them Moreover some tasks may need analyzing ERPs preceding the response reaction Type select trial synchronization type Stimulus standard trial synchronization for ERP calculation Button trials are synchronized by the start of response reaction 1 e by the moments when the patient s finger presses the button Spike trials are ignored Averaged sweeps are selected using spike detection information Subject response is not processed Stimulus set the synchronizing stimulus number for Stimulus trial synchronization Button Channel set the number of the channel acq
125. ad from database and select corresponding condition from the list of conditions 178 Eves Opened 15 35 15 Select condition Eves Opener Auditory Mathematical Heading VLPT 179 49 Parameters Of EEG Auto Crosscorrelation Computation dialog Parameters of EEG auto and crosscorrelation computation Time interval Selection Fragment 15 06 25 Full EEG file Channels EEG only Epoch lentgh 1 second 4 seconds 16 seconds C 64 seconds C seconds C 8 seconds 7 32 seconds Artefacts elimination Polinomial trends 2 Slow waves Power of signal 200 Bandrange 0 5 125 0 100 oo IO Load GEVE Cancel Time Interval Define EEG interval to be processed Selection Process interval between two vertical markers Fragment Process fragment selected from the list Full EEG file Process the whole file Channels Define a sunset of channels to be processed Epoch Length Select epoch length for analysis Maximal lag is half of epoch length 1 second Maximal lag 512 ms 2 seconds Maximal lag 1024 ms 4 seconds Maximal lag 2048 ms 8 seconds Maximal lag 4096 ms 16 seconds Maximal lag 8192 ms 32 seconds Maximal lag 16384 ms 64 Maximal lag 32768 ms Artifact elimination Check options to define types of artifacts to be eliminated Polynomial trends Polynomial trend is estimated for each epoch and each channel and
126. alculator Bar 85 This bar is located at the right side of the EEG mapping spectra or indices windows Its controls depend on window type At the top of this bar is a color scale Numbers above and below the scale indicate parameter values corresponding to highest and lowest color degree Below the color scale are controls for setting color scale sensitivity size of maps or graphs etc For additional details about these controls see the sections describing particular windows Delta Theta Alla Beta _ Beta Gamme _ Delta Theta Alfa _ Betal Beta 0 This bar is located at the bottom edge of the EEG Spectra window or EEG Indices window and 15 used to define a formula for calculating a value to be mapped in the Formula mode The bar is also used in the Biofeedback window to define a biofeedback parameter The bar has two rows of buttons corresponding to standard EEG bandranges The top row defines the sum for ratio numerator and the bottom one for ratio denominator The standard EEG bandrange parameters signal powers or EEG indices marked by checked buttons will be summed when calculating the ratio of numerator and denominator For example if Alpha and Beta buttons are checked in the top row and Delta and Theta in the bottom row then the following power ratio would be calculated for each channel
127. all be described in the text below the menu calling it These limitations can complicate development of a user s own hierarchical menu system but they leave out the possibility of occurrence of closed loops and therefore simplify debug of the system Comments 241 Any text from a semicolon to the end of line is treated as comment and 1s not included in the syntax analysis 4 Example of a Hierarchical Menu Program Here 15 a short example of a program showing all key words and features of the language You can analyze this text by yourself and having done it you surely will be able to create a hierarchical menu system as complicated as you need block Block menu Menul title text of titlel Option menul AinODtjomn Insert textil menul next Op Cion mena Vv topntuon Insert ter menul break Options menul y Option Insert texto Menus Option4 menul Option insert text4 menul guit end menu 2 Optionl menu2 Option insert texti 2 next Option2Z menu2 Option insert text2 2 break Options menu2 Option insert text3 menu2 go Menu4 Option4 menu2 Option insert text4 2 quit end menu MenuS title text of title3 Optionl menu3 Option insert texti menu3 goblock Block2 next Option2Z menus Option insert text2 menu3 goblock Block3 break Option3 menus Option insert text3 menu3 goblock Block2 go 5 Option4 menu3 Option insert text4 men
128. and Edits trial labels used for grouping trials in ERP calculations for the active EEG file The Modify Trial Labels dialog is displayed after calling this command 40 View Toolbar gt Main Toolbar command Run this command to show or to hide the main toolbar containing shortcut buttons for most frequently used WinEEG menu commands such as Print See Main Toolbar to learn how to use it 41 View Toolbar gt Input Control Toolbar command Run this command to show or to hide the Input Control toolbar containing buttons used to manage EEG acquisition and scrolling See Input Control Toolbar to learn how to use it 42 View Toolbar gt Analysis Toolbar command Run this command to show or to hide the Analysis toolbar containing buttons used to manage spectra indices and ERP windows See Analysis Toolbar to learn how to use it 43 View Toolbar gt Maps Window command Run this command to show or to hide the side window that presents mapping potentials and other processing parameters depending on the positions of two vertical cursors 44 View Toolbar gt Dipole Window command Run this command to show or to hide the side window that presents dipole sources 45 View Toolbar gt Filters Bar command Run this command to show or to hide Filters bar which presents a number of processing options or window parameters for the active EEG window 103 See Filters Bar to learn how to use it 46 View T
129. andonet t ni gun eda Riot 120 142 Pop up menu of ERP window Add Label comma s c V e RSEN EE Ma dud 120 143 Pop up menu of ERP window Copy Parameter Distribution command eee 120 144 Pop up menu ERP window Copy Channel commantd 120 6 145 Pop up menu of ERP window Copy Channel to Report 4 120 146 Pop up menu of ERP window Source distribution LORETA csse 120 147 Pop up menu of ERP window Delete All Labels 120 148 Pop up menu of ERP window Delete Labels and Maps esses enne eene rne 120 149 Analysis Insert Patient Card command eee 121 150 Analysts Generate Gl Report COMMGNG oie e alo tus e ues a des a etae eet eus ee tu Quos ut docu oua 121 151 Analysis Insert Final Report Template command esee nir entere sese sane nens 121 152 Sep Dalaba COMMING ss d based dedu RU cu ua 121 TIS iD tun Qu mu 121 SFIS CL INS 121 152 SCHMID Moma dd ata dna teilen 121
130. are recorded to the Spectra database In the last case the Spectra are computed for each EEG fragment and are recorded in database separately 141 10 Averaging Spectra dialog The Averaging Spectra dialog if used to define a parameter of averaging Check Keep raw spectra button to save individual spectra in resulting file More accurate estimation of spectral parameters their confidences levels and statistical significance of differences can be done using individual spectra For more information see Analysis Insert tables into report command x Keep raw spectra c oe c c oe Cancel 11 Base Record Search Parameters dialog The Base Record Search Parameters dialog is used to define a set of criteria for record filtering In other words only records satisfying all of the specified criteria would be displayed in the list and the others would be ignored The search criteria are saved and re used each time the Record List dialog 15 opened This logic facilitates manipulation of a certain subset of the database records for example only data acquired during last month But it may also cause mistakes and complications when searching data If you find that some records have suddenly disappeared from the base first of all check the search criteria Each edit box in the Base Record Search Parameters dialog defines one search criterion A record satisfies search conditions if it contains all features that have been de
131. av adt de ea Py deoa sna ovo 36 GRAND AVERAGING AND BATCH DATA PROCESSING eee eeeeee ee eee eee ee eee esos s eee eee esso assets eee sesso sss eee 36 DIPOLE SOURCE e Eod aed Ea eoo eee e aea oa 37 WINEEG AND LORE T TTE 37 AUTOMATED SPIKES DETECTION AND 5 5 555 55555 4 0 38 USING THE Eee IE eo 40 SPECIRA COMPUTATION AND COMPARISON ue das eua 40 EISPCOMBUTLATION AND COMPARISON rerai 46 WARRAIN M 49 WINEEG COMMANDS AND INTERFACE 5 50 WINE EG WINDOW S 5 50 JEU C27 50 2 DU Ne 61 63 EEG MAPS WINO OW I E 64
132. available It 15 similar to WinEEG programs and includes all functions for visual analysis of video EEG data you need 2 Biofeedback In parallel with EEG acquisition power spectrum parameters are calculated for one of the channels Power ratio for different frequency ranges 15 defined and displayed on the screen as a vertical colored bar with height proportional to current power ratio value Music can be played in parallel with EEG acquisition with the volume level defined by the calculated power ratio value EEG acquisition results can be saved to the database for further analysis 3 Visual EEG Analysis After finishing EEG acquisition it is possible to analyze stored data visually During both data acquisition and visual analysis EEG signals are displayed in plotter like mode Also the visual analysis mode enables manual measurement of signal parameters intervals and amplitudes horizontal and vertical speed and sensitivity scaling marking sites of interest removing artifacts etc 4 Automatic EEG Processing WinEEG includes the following methods of EEG analysis 1 Digital EEG filtering 2 Artifacts correction based on PCA or ICA decomposition and spatial filtering 3 Automatic artifacts detection and elimination 4 Automated dipole based spike detection 5 Spectral and coherence analysis including topographic power and asymmetry mapping 6 Analysis of EEG indices 21 7 Topographic mapping of instantaneous scal
133. axis percentage of time that signal of a given frequency was detected Histograms Indices are depicted as graphs for each separate channel X axis frequency 0 25 Hz increments Y axis percentage of time that signal of a given frequency lay within a certain standard EEG bandrange Table EEG indices are listed a table Maps Percentage of time a signal existed within a certain standard EEG bandrange Asymmetry Map of Asymmetry of EEG indices Formula Ratio of percentages of signal existence time for two standard EEG bandranges is mapped Ratio formula to be mapped is defined by means of Calculator bar Use the Scale list or and keys to change color scale sensitivity or Y axis scale for graphs Use the Fill By list to choose how to fill areas under a graph or a histogram None Blank white areas Bandranges Fills areas by colors defined in the standard bandrange 71 parameters see Setup gt EEG Bandranges command Color Scale Fills areas by color scale showing index level Choose graph or map size from the Size list For Graph and Histogram modes Value and Freq Fields of the status bar are used showing level and frequency for an index indicated by cursor on a graph or a histogram when holding the left mouse button pressed Use the Setup gt EEG Bandranges command to modify parameters for standard EEG bandranges Use the Setup gt Mapping Style command to change color scal
134. ayed on Corrected EEG plot The pure artifacts filtered artifacts waveforms are displayed on Excluded Artifacts plot The waveforms of EEG signal components are displayed on EEG components plot The amplitudes of these components are printed right to the waveforms The topographies of EEG signal components are displayed by Topographies maps The Scroll bar is used to change the beginning time point for all mentioned above waveforms The buttons Gain and are used to change vertical scale sensitivity for all waveforms The buttons Speed and are used to change horizontal scale speed for all waveforms The group of buttons Method 15 used for selection of EEG signal decomposition The PCA SVD and ICA independent component analysis methods can be used for this goal The button Invert filter allows estimate spatial filter so that Corrected EEG and Excluded Artifacts will be flipped This possibility allows separate clean EEG component waveforms from mix of components in raw EEG for the future processing Click on Map of topographies to include exclude it to from the data set used for spatial filter estimation Attention The algorithm of artifacts correction is not ideal That is why the visual inspection of results of correction 1s necessary If the results are not satisfied another time interval should be selected and analyzed 187 56 Parameters For Potential Computation dialog Paramet
135. bar placed in the bottom of EEG window displays parameters for a selected channel In the top of the EEG window there 1s a time scale displaying fragment names and time marks Any EEG interval in the EEG window can be selected for further processing by means of two vertical markers 51 ET TOVATEST EEG Tova 17 24 11 NM NM NI NM O2 Ret Some Mitsar amplifiers have additional digital TTL inputs In this case the signals from this inputs are displayed by red horizontal bars placed at the bottom of EEG window Thin horizontal bar correspond to logical zero high TTL level and thick bar to logical one low TTL level Usually the special digital button is connected to these digital inputs to measure subject reaction Upper horizontal bar correspond to Digital 1 input and to left button lower bar correspond to Digital 2 input and to right button If Mitsar amplifiers have not additional digital TTL inputs another analog button is connected to ECG input to measure subject reaction Last modification of button has two output levels left button low level right button high level and provide all possibilities as digital button different modification of buttons Incorrect settings of button signal processing can be potential source of errors Attention Different parameters of processing of subject reaction should be set up for 52 Main features of EEG window ar
136. between flashes in pair 1 Don t use 4 i Don t use 4 4 Dont use Don t use oye ea 4 4 F F 4 F 4 PPA E E Don t use 4 4 Don t use 2 3 4 5 Dont use b B Dont use Ce3 o ojo ojo ojo cx le Pe ET De E n De D De Bn De D e B n De Dn fe B En De DI De D Eon De fe P Ion De Dn e D Ion e Dn De D In e D e I4 e E pape plage 41141194 4 FX Cancel Photostimulation programs used during EEG acquisition see Input Control toolbar There are two types of photostimulation programs rhythmic and flashes A rhythmic photostimulation program may consist of several from one to twenty steps For each step the photostimulator flashes with constant frequency and power for a certain time For photostimulation by single flashes three parameters are set number of flashes minimum interval and maximum interval in milliseconds WinEEG automatically creates and uses a sequence of intervals with random durations within the range from minimal to maximal value defined Name Select a photostimulation program to modify or enter a new name Choose
137. can be converted into text ASCII format If an ERP ERD file 1s active an Export ERP ERD dialog appears An ERP ERD file can be converted into text ASCII format 98 Shortcut Main Toolbar i 17 File Export EEG and Video EEG command Copy selected part of EEG record to another file When you run this command a Export video EEG dialog appears This function is useful if it is necessary to prepare a number of video EEG examples to write them to CD The WinEEG program will copy automatically video EEG data video EEG viewer ViewEEG program and some additional service data in selected folder It is possible to run this function many times As the results a number of subfolders will be created and the data will be copied in these subfolders File Edit View Favorites Tools Help Q T 2 gt Back Forward Up Search Folders Move Copy To Address Go SDATAL b AUTORUN INF START EXE WIEWEEG EXE objects E Computer START EXE utility helps to open all copied data automatically by ViewEEG program ViewEEG program is the restricted version of WinEEG program providing reviewing of video EEG data D Attention ViewEEG program requires DirectX 9 0 instalation 18 File Print command Prints the active window content active file By default the full contents graphs maps or text w
138. capture audio signal Video block length Specify minimal length of block of video data placed into one file By another words each specified seconds the old video file will be closed and new file will be created Attention Please specify all parameters of Video format Video source and Audio source carefully The quality of recorded signal will depend on these parameters Unfortunately corresponding dialog boxes are unique for each video capture and audio capture devices Please look for information about them in corresponding operation manuals 236 98 Equipment Configuration dialog Amplifiers type In this case the version and serial number of amplifiers box will be displayed Monitor Size Choose the display size corresponding to your monitor I O Port Choose COMI or COM2 port to connect encephalograph Attention If I O Port is chosen incorrectly EEG cannot be acquired and any attempt to start EEG input will cause error t Attention This field can be disabled in a number of WinEEG versions Use button Find in this case to perform automatic search of connected to computer Mitsar amplifiers Synchronization Port To Which a Slave Computer Is Connected Choose a COM port to connect a slave computer presenting stimuli for ERP investigation to and specify its parameters Equipment configuration 1 Monitor size Amplifiers type Not connected DEMO made port use Find Sampling
139. card into final report text Inserts a final report template into final report text The Setup menu offers the following commands Database Pathnames Preferences Mapping Style Montage List Fragment Names Label List Photostimulation Programs EEG Bandranges Stimuli Presentation Programs Graph Formats Biofeedback Parameters Title Final Report Final Report Templates Video recording Equipment Parameters Window menu commands Sets modifies Database pathnames Sets EEG display parameters Sets map display parameters Edits list of montages Edits list of fragment names Edits list of user labels Edits list of photostimulation programs Modifies standard EEG bandranges Views and modifies the list of stimuli presentation programs for ERP acquisition Modifies formats for displaying ERP graphs Customizes auditory biofeedback parameters Edits organization title Customizes final report generator Edits list of final report templates Select video capturing device Set and modifies parameters of capturing resolution frame rate signal format and on line compression Customizes hardware configuration The Window menu offers the following commands Cascade Tile Horizontally Tile Vertically Arrange Icons Split Arranges windows in cascade Tiles windows horizontally Tiles windows vertically Arranges icons of minimized windows Splits active windo
140. correct software errors hoping that you would meet them not very often If you detect any discrepancy between the manual and the real performance of the software please do not hesitate to contact the developers directly You can always learn the contact information using the Help About WinEEG command Quick and effective troubleshooting is our duty and we shall be grateful for your help in detecting any bugs You will receive a free revised software version on your request Extending the WinEEG vocabulary of software features 1s another question WinEEG 15 a commercial product so the developers follow industry practices and deliver the product as 1s Your comments on the product features will be gratefully accepted and probably be taken into account when developing further software versions But we cannot guarantee immediate addition of new features requested by our users Narually we will meet the wishes of any customer who wishes to support the development of new methods for EEG analysis 50 WinEEG COMMANDS AND INTERFACE REFERENCE WinEEG Windows 1 EEG Window ET 07 AX eeg Belyakova Ekaterina Visual 19 57 07 E 3 ml x Med pe f SC RM An EEG window is used for electroencephalogram monitoring The Channel Names bar placed on the left side of EEG window 15 used for channel selection The Slider placed in the top of EEG window is used to select time sample for which a synchronous video frame is displayed The Status
141. created 1f possible when you press OK or Apply button 211 Data base parameters Date bases of raw data Date bases of processing results Browser settings Base records search parameters Data base of EEG Base pathname A InEEGEnsRHeleasesEEBBASE DBF Working folder wVInEEBEnmsRHaelease sDAT A Data base of biofeedback records Base pathname H WinEEGEn Release BFEBASE DBF Working Folder H WinEEGEn Fielease BFEDATAS Cancel Ampy Help 72 Database Parameters Databases of Processing Results dialog Database Of EEG Spectra Database Pathname Enter full path for EEG spectra database or press button to the right of the name field to browse folders Database Of EEG Spectra Working Folder Enter full path for EEG spectra working folder or press button to the right of the name field to browse drives and to select a folder Database Of EEG Indices Database Pathname Enter full path for EEG indices database or press button tp the right of the name field to browse folders Database Of EEG Indices Working Folder Enter full path for EEG indices working folder or press button to the right of the name field to browse drives and to select a folder Database Of Evoked Potentials ERP Database Pathname Enter full path for ERP database or press button to the right of the name field to browse folders Database Of Evoked Potentials ERP Working Folder Enter f
142. d Up Search Folders Move Copy Address Go 1 START EXE utility helps to open all copied data automatically by ViewEEG program ViewEEG program is the restricted version of WinEEG program providing reviewing of video EEG data D Attention ViewEEG program requires DirectX 9 0 instalation 26 Print dialog The following options allow you to specify how the document should be printed Printer Select active printer and its connection Choose Properties command to modify printer properties Properties Calls a dialog to define additional printer options 161 Print Range Specify the pages you want to print Prints the entire document Selection Prints the currently selected text Pages Prints the range of pages you specify the From and To boxes Copies Specify the number of copies you want to print for the above page range Collate Prints copies in page number order instead of separated multiple copies of each page 27 Printing dialog The Printing dialog box 15 shown during the time WinEEG is sending output to the printer The page number indicates progress of the printing task To abort printing choose Cancel 26 Page Setup dialog You can define the following parameters for the page to be printed 162 Page Setup 1 rm lr pum rn RIT NICA rn I r Pape
143. d data file 3 To sort records patient cards by any criterion field 4 To select a subset of records by a set of criteria 9 To copy or to move a file to an archive 6 To copy a file from an archive to the working directory 7 To delete a data file and or a database record 138 the top of the Record List dialog window there is record list Each row in it corresponds to one record in the investigation list file Each column in the list corresponds to one field of the patient card form Use Setup Database Pathnames command to define what fields are to be displayed and in what order When Record List dialog 1s opened record list 1s unsorted the first row displays the latest investigation added to the database etc To sort the record list by any field click the corresponding column header To select a record for further processing click the corresponding row so it becomes highlighted In the bottom of the Record List window the patient card from the selected record 15 displayed see Edit Patient Card dialog Additional data file information is also shown there File field displays the name of data file corresponding to selected record Size field contains size in bytes of the data file if it is placed the working directory Otherwise this field contains Not found Backed up field contains Yes if the data file was backed up in the archive and No otherwise To the right of the patient card the
144. ddle bar lt 0 01 and longer bar p lt 0 001 Use the Channel list to choose a channel to display EEG coherence or phase spectrum for For Graphs and Histograms modes Value Freq tag and p 0 0 fields of the status bar are used to show power level frequency and significance of differences A frequency component may be pointed to on a graph or selected in a histogram by cursor position when holding the left mouse button pressed 68 There is a possibility to add or more maps corresponding to selected frequency of frequency band A frequency component may be pointed to on a graph or selected in a histogram by cursor position when holding the right mouse button pressed When right button will be released a pop up menu will appears on the screen Use Add Map command to add map for selected frequency FFA FS AvW Fada F8 Avw 2 0 420 0 280 0 140 3 3 4 4 2 0 420 0 280 0 140 3 4 2 0 420 0 280 0 140 01 Aviw O2 AvW 10 0 300 0 000 P 9 79 2 P 18 31 FEN TERRE PEL 10 20 n3 e 0 000 MKB 2 P 10 01 Use the Setup gt EEG Bandranges command disabled for auto and crosscorrelation to modify parameters for standard EEG bandranges Use the Setup Mapping Style command to change color scale palett
145. ding arrow key 2 Press arrow keys to move the edge 3 Press ENTER when the window reaches necessary size 180 Move command System menu Run this command to size the active window by means of arrow keys The cursor will change its shape to Use arrow keys to move the window Press ENTER when the window reaches the necessary position Shortcuts Keys CTRL F7 181 Minimize command System menu Minimizes the window to an icon Shortcuts 126 Title bar Keys ALT F9 182 Maximize command System menu Maximizes an application window to screen size or a document window to application window size Shortcuts Title bar Double click title bar Keys CTRL F10 183 Next command document window System menu Activates next document window in order of opening time Shortcut Keys CTRL F6 184 Previous command document window System menu Activates previous document window in turn by time of opening Shortcut Keys SHIFT CTRL F6 185 Close command System menu Closes a document window or application Shortcuts Title bar Keys CTRL F4 to close a document ALT F4 to close WinEEG 186 Restore command System menu Restores a minimized or a maximized window 127 Dialogs I Montage Parameters Patient Card dialog Use the Patient Card tab of the Montage Parameters dialog to enter data the patient card You can also choose a montage from the montage list se
146. dow Scale Printing Amplifiers T elepat 105 Drrverll Length of input buffer Monitoring style during EEG recording Show value for each channel during recording Moving paper emulation C Don t show Oscilloscope emulation C Color boxes f Color bores with values Cancel Help Monitoring Style During EEG Recording Choose EEG monitoring style Moving paper Scrolling EEG window from right to left emulation Oscilloscope emulation Redrawing EEG window from left to right Can be used if the computer is not fast enough to enable smooth EEG window scrolling Show DC Value For Each Channel During Recording unknown item in Russian Choose DC component monitoring style 217 Don t Show Do not depict DC value Color Boxes Depict as small colored boxes 77 Preferences EEG Window dialog Colors List of window elements displayed in color Under the list there 15 a button showing current color for the selected element Click it to call Colors dialog and to modify element color Grid Choose vertical grid style for EEG window and also for printing None No grid is shown or printed 1 second step Coarse grid 1 second step 200 millisecond Fine grid 200 millisecond step step Preferences EEG input E
147. drange list Default Bandpass filter Mane T Calculate Event related potentials Event related desenchronization C Evert related coherence Wavelet decomposition EEG spectra and coherence Parameters Process file Check EOG Rejection option to eliminate eye motion artifacts for all files Press Parameters button to call up the EOG Rejection dialog and set parameters for EOG rejection Check Artifacts Rejection option to automatically detect parts of EEG record including artifacts and eliminated them from processing for all files Press Parameters button to call up the Artifact Rejection dialog and set parameters for artifacts rejection Bandpass List to choose a list of standard EEG bandranges for automatic source EEG filtering Bandpass Filter list to choose a standard EEG bandrange filter for automatic source EEG filtering Choosing an option from the Calculate group defines how to process selected files Processing File field displays the name of the file currently being processed Processing results are automatically recorded to a database If the Event Related Potentials option was chosen results are recorded to ERP database If the Event Related Coherence option was chosen results are recorded to ERC database If either Event Related Desynchronization or Wavelet Decomposition was chosen results are recorded to the ERD database If either EEG spectra and coherence were chosen results
148. e 112 Pop up menu of EEG window Copy EEG to Report command Run this command to copy EEG time interval into text of final report for selected spike 113 Pop up menu of EEG window Copy Spike to Report command Run this command to copy spike waveform into text of final report for selected spike 116 114 Analysis Smoothing command Smoothes biofeedback parameter curve a Biofeedback window Smoothing dialog is displayed after calling this command to define sliding average width 115 Analysis Graphs command Displays processing results spectra or indices as graphs for each channel an EEG indices window or in an EEG spectra window Shortcut Analysis toolbar 116 Analysis Histograms command Displays histograms for standard EEG bandranges for each channel in an EEG indices window or in an EEG spectra window Shortcut Analysis toolbar ET 117 Analysis Table command Displays table of spectral parameters for standard EEG bandranges for each channel in an EEG indices window or in an EEG spectra window Shortcut Analysis toolbar 118 Analysis Maps command Maps spectral parameters distribution for standard EEG bandranges for each channel EE indices window or in an EEG spectra window Attention Maps cannot be viewed if the source EEG was reformatted to abipolar montage before processing Shortcut Analysis toolbar 119 Analysis Asymmet
149. e command Inserts a final report template into final report text Shortcut Main toolbar 152 Setup Database Pathnames command Creates or opens EEG spectra and indices databases and customizes their parameters The Database Parameters dialog consisting of four tabs 1s displayed after calling this command Go from tab to tab to define parameters for Databases of Raw Data Databases of Processing Results and also Browser Settings and Base Record Search Parameters 153 Setup Preferences command Sets graphic output parameters for EEG window Preferences dialog 15 displayed after calling this command 154 Setup Mapping Style command Modifies map display style Mapping Style dialog is displayed after calling this command 155 Setup Montage List command Modifies montages in the montage list A montage includes a number of options such as list of registered channels list of displayed channels and their parameters gains bandwidths baselines colors etc Remember that signals are acquired and recorded always in monopolar form referenced to the electrode connected with A1 and A2 nets The bandwidth for acquisition and recording is maximally wide 0 15 70 Hz for Mizar EEG 3 Remember that 0 15 Hz frequency corresponds to 1 0 sec time constant This recording method allows conversion of raw data to any mono or bipolar montage with any bandwidth during subsequent viewing and proc
150. e copying procedure will sequentially ask for the necessary number of removable disks Backup data to archive Number of Files 1 Total Size 18 58 Mb Volume Mame DISKI Remove files from working folder Please don t Fargen to write a volume name to label of removable disk It will be helpfull when will search nessesary data in the Future 100 Cancel Attention Use the Restore command to restore backed up file into the database working directory Using a file procedure to move data in the archive can change format of the data file Drive select drive to backup the data file to Check Remove Files From Working Folder option to delete the backed up file s from the working directory 144 13 Archive Data dialog To restore an archive file means to copy a backed up archived file corresponding to the selected record from the specified disk to the working directory see Data Archiving If the data file 15 archived on several floppies they will be asked for sequentially Restore archived data Volume label DISK1 04 100 MM Lancel Drive select drive to restore the data file from 14 Delete Data From Database dialog Be careful when running this command A mistake can lead to unrecoverable loss of important data First of all define what exactly 1s to be deleted Delete data from data base Only Data File option would be usually chosen to
151. e List Displays list of templates for final reports Choose the template you need and double click its name or press OK Final repart template list 174 46 Parameters Of signals dialog x Difference L A Fpl Aw 4 3 20 03 41 4 Fpz Avw 3 61 48 5 3 18 33 46 4 5 83 25 0 Foy 29 9 5 43 14 4 29 5 10 54 31 8 Fay 63 6 4 74 45 2 T 349 18 37 24 4 CsA 38 5 4 15 30 0 Cea 30 5 4 00 1 2 Mrd 56 8 4 38 70 4 ThA 112 6 2 zl 102 1 THAW 26 8 fo 3 4 30 4 5 41 14 3 23 1 5 51 18 7 PA AA 75 8 1 34 104 1 TEA Be b 1 35 99 0 1 57 9 54 1 aged 46 6 3 02 38 9 ELI Avuy 14 1 9 12 16 7 Close into repart The table displayed in this window includes the next columns Channel channel names Amplitude amplitude from pick to pick for signal of each channel and for selected by vertical markers time interval Frequency an approximate frequency of signals Difference a difference of voltages for selected by vertical markers EEG samples Press Insert into report button into insert this table in text of report A usage of MS Word 15 recommended 175 47 Parameters Of EEG Indices Computation dialog The basic definitions and algorithms are described in EEG Indices section Here only processing parameters are listed Parameters of EEG indeces computation Time interval Fragment 6 9 12
152. e Setup Montage List command Montage parameters X Patient Card Channels Referents Colors View Electrodes Montage Name Monopolar Date 5 04 2005 Time 143859 0 Investigation EEG observation Se ss s lt Ss m Patient Patient ID Diagnosis Date of birth Sex i Address Mate Disk free space Mb E161 Maximal length of 20 channels EEG recording minute 1 0768 Resolution Pixels 320 240 Frames second 1 5 Maximal length af recording minute 2 B recording parameters Montage Name This field initially contains name of the default montage from the montage list Use down arrow button to select a different montage from the list for use as a new default You can also rename the selected montage ID EEG record ID 15 an arbitrary alphanumeric sequence of up to 10 characters to simplify searching the database Date The date of EEG acquisition start 15 entered automatically Use DD MM Y Y Y Y date format for successful database search by date 128 Time The time of EEG acquisition start is entered automatically Use HH MM SS time format for successful database search by time Investigation Select investigation type from list 1 EEG observation 2 Biofeedback Patient Enter patient s name Patient ID Enter patient s card number D
153. e active document Deletes the selected block Selects the whole document Clears the whole document Clears all video data for active document Finds events in EEG record Finds a string in the text Finds one string in the text and replaces it with a different string Finds the EEG interval selected by left and right vertical markers Finds the beginning of an EEG fragment Adds a user label Deletes an existing user label Edits a patient card Trial Labels View Menu Commands 89 Edits trial labels used for ERP calculation The View menu offers the following commands Toolbar Main Toolbar Input Control Toolbar Analysis Toolbar Maps Dipole Window Filters Bar Maps Bar Spectra Bar Indices Bar ERP Bar Biofeedback Bar Calculator Bar Averaging Group Bar Customize MainToolbar Customize Input Control Toolbar Customize Analysis Toolbar Status Bar Channel Names Bar Video Window Video Window size Decrease Gain Increase Gain Decrease Speed Increase Speed Select Montage Format Menu Commands Toggles display of Main toolbar Input Control toolbar Analysis toolbar maps of two EEG instants selected by Left and Right cursors dopole source localization of two EEG instants selected by Left and Right cursors Filters bar Maps bar in an EEG mapping window Spectra bar in a spectra window Indices bar in an indices window E
154. e and are not saved in the montage list If a parameter set 1s expected to be used many times it would be better to define it in the montage list see Setup MontageList command Next time you would simply select it from the list instead of repeatedly entering parameters which may take a considerable time Attention Montage parameters set by the New command are active only for the currently When customizing a montage you must define a number of its parameters a Define a list of channels for EEG acquisition corresponding to electrodes really placed and connected see Montage parameters Electrodes dialog Define also coordinates of the electrodes b Define a list of channels the montage and their parameters such as gain bandwidth baseline see Montage parameters Channels dialog c Define colors for signal displaying see Montage parameters Colors dialog d Define referents to be calculated if there are any Av AvL see Montage parameters Referents dialog e Test whether channels are correctly defined or view another montage in the list see Montage parameters View dialog When the parameters are set press OK button to create a new EEG file A new blank EEG window appears on the screen Use Recording menu commands to start monitoring EEG and to manage photostimulators Don t forget to save the new file in the database see File Save command when EEG monitoring is finished 95 Shortcu
155. e and map appearance Use Edit gt Copy command to copy graphs or maps visible in the window to the clipboard They can then be pasted into final report text or into any application WinWord Paint Etc window by means of Edit gt Paste command The table of spectral parameters can be also copied to clipboard as text Use the File gt Save command to save newly calculated EEG power spectra in the database 69 Use the Analysis Insert tables into report command disabled for auto and crosscorrelation to insert detailed report into the text of MS Word window This option is available only if raw spectra are kept during computation of power spectra see Parameters of EEG spectra computation dialog 70 16 EEG Indices Window This window 15 designed for EEG indices analysis 0 0 Scale AU x m Fill b Bandranges Size 100 Delta Theta L Alfa C Betal L Beta L Gamm L L L Deta Theta L lfa Betal C Beta2 L On the right side of the window there 15 the Maps Spectra Indices bar and at the window bottom there 15 a Calculator bar The results of EEG indices analysis be presented in six window modes that are switched from one to another by corresponding commands found on the Analysis menu Graphs Indices are depicted as graphs for each separate channel X axis frequency 0 25 Hz increments Y
156. e listed below 1 EEG Acquisition Use Record menu commands to manage EEG acquisition including start EEG monitoring and recording start stop video capturing pause and stop recording Note that these commands are available only for a new EEG file In other words you cannot record EEG into a pre existing file 1n the database To create a new EEG file use File New command 2 Searching for an EEG interval To find a certain EEG interval use the scrollbar or keys Left arrow Right arrow Page Up Page Down To go to the beginning of a certain fragment use the View gt Find Fragment command To playback EEG or video EEG use the Record gt Rewind Back Record gt Play Back Record gt Play Forward and Record gt Rewind Forward commands The video frames are displayed synchronously with EEG scrolling in pop up Video Windows This window is shown or hided by View gt Main Video Window and View gt Additional Video Window commands Its size is changed by View gt Video Window Size command 3 Comparing two EEG intervals To perform this task first of all split the EEG window in two panes using Window gt Split command Then use scrollbars in each pane to find the intervals of interest 4 Copying window contents to clipboard To perform this task use Edit gt Copy command The waveform areas visible the EEG window will be copied to clipboard and can be then pasted into final report t
157. e palette and map appearance Use Edit gt Copy command to copy graphs or maps visible in the window to the clipboard They then be pasted into final report text or into any application WinWord Paint Etc window by means of Edit gt Paste command The table of spectral parameters can be also copied to clipboard as text Use the File gt Save command to save newly calculated EEG indices in the database 72 17 ERP Window This window is designed to analyze event related potentials ERP event related EEG desynchronization ERD event related EEG coherence ERCoh or to perform wavelet ERP analysis 21 69 Nataliya OI Active Groups E 1 6 5 2 2 6 9 6 3 3 5 d 4 3 386 t Time interval From ms Duration m Tothe end Maps From m Step ms Humber 10 Baseline Baseline Stimulus z Y Length ms 200 H8 Hin 9 96 0 g EN obo 2 382 ms C2 572 ms di 4 Ld On the right side of the window is the ERP bar and at the top there is the Averaging group bar ERPs can be presented in five window modes that are selected by corresponding commands on the Analysis menu as listed in the table below In addition for wavelet ERP analysis there 1s a feature that allows display of EEG oscillation dynamics for the given bandrange as graphs or as bi
158. e parameters of signals Amplitude from pick to pick approximated frequency and voltage difference will be measured for selected by vertical markers time interval 86 Analysis EEG Mapping command 110 Opens an EEG Mapping window for active EEG file You open several Mapping windows for one active EEG file but for different intervals Use vertical markers in the EEG window to mark an interval of interest An interval for mapping must not exceed 1 sec Raw data 1s processed according to montage parameters before mapping ECG channels are excluded automatically Electrode coordinates are additional parameters for maps see Montage parameters Electrodes dialog Incorrect coordinate settings can disable mapping Attention EEG data reformatted to a bipolar montage cannot be mapped Choose a monopolar montage for the active EEG window before calling this command Shortcut Main toolbar 87 Analysis EEG Indices command Calculates EEG indices for a selected EEG interval and opens an EEG Indices window for the active EEG file You can open several indices windows for one active EEG file but there can be only one window for any specific record interval Use vertical markers in the EEG window to mark an interval of interest An interval for processing must not be shorter than 1 sec After calling this command the Parameters of EEG Indices Computation dialog is opened to set additional processing parameters Raw da
159. e record see also ID field Date of Birth From To fields define the interval for dates of patients birth for example from 01 01 1950 to 31 12 1959 To enable automatic search by date use DD MM Y Y Y Y date format Sex field displays patient sex M or F Address field contains a text string to be presented in the corresponding field of the database record see also ID field Note field contains a text string to be presented in the corresponding field of the database record see also ID field Check Existed in the working folder option to select only records corresponding to files located in the working folder Attention Using this condition may significantly slow down the database search Check Backed up option to select only records corresponding to EEG files that have been backed up at least once 75 Choose Folder dialog Choose folder Cancel Folder name H WinEEGEn Release Folder Enter folder name or browse the list to find the appropriate folder Drive Choose a drive to look for the necessary folder on 216 76 Preferences EEG Input dialog Set options for new data acquisition in EEG window Amplifiers Displays name of amplifier block the software 1s designed for I O Port Choose input output port to connect amplifier block to Length of Input Buffer Choose how many seconds will be stored before starting EEG acquisition Preferences EEG input EEG win
160. e smoothing for each separate trial prior to averaging Subtract ERP from raw EEG If this option 1s checked then before calculating EEG oscillation power ERPs will be subtracted from source data to eliminate their effect and only induced activity will remain 61 Wavelet Coherence dialog To perform wavelet coherence calculation additional information on stimuli presentation structure in each trial is used together with source data To group trials by stimuli types by response task trial labels are used These parameters are defined beforehand when creating editing stimuli presentation protocols by means of PSYTASK program installed on the presenting computer Wavelet coherence Z o e xm Groups oftrials Labels Correct 0 0 Incorrect Artifact 0 Group differences Choose Artifact processing Level fi 00 uv Channels Don t reject Threshold for channels Synchronisation Type Stimulus Stimulus 1 Button channel None Subject responce processing Undefined Define Time interval before ms 0 0 Time interval after ms 0 Frequence from 40 Hz Frequence to 20 0 Hz Step 1 00 Hz Li
161. ect appropriate command The next picture will be placed into clipboard or final report commands 300 0 9 300 0 ARE 0 035 ECC 0 9804 200 Attention The voltage and dipole localization picture will not added for bipolar montage To insert corresponding to spike waveforms of EEG into clipboard or final report commands Copy EEG of Copy EEG to report of pop up menu could be used The next picture will be placed into clipboard or final report commands 58 oHoBaa 10 37 37 1 Fpl ay maha Lob nae ANAL creen TE AY Au LA CL m aa i 01 A m UN mne n Ex A Attention Use MS Word only if you want to insert picture into final report 26 Display spectra density arravs To display Spectra density arrays use command Analysis gt Spectra Density Array The color rasters will be displayed at lower part of EEG window 59 f WinEEG D0000059 EEG Decurtins Annalea visual CPT 10 48 50 Ioj x File Edit View Format Recording Analysis Setup Window Help OD BAX 6 x sm be nn WA Q p t 4 1 19 44 4 30 mm s 1004 v High Cut Hz 3t 446 48 42 183 F Psy F 3 5 Fz A My Fac Fea yy T 348 345 7 Ca As ARI T 447 AP TIA Pasa Pata TEAM Aw
162. ecting high frequency low amplitude signal oscillations The results of EEG indices analysis by means of these methods are the closest to visual EEG estimations Though this method leads to some offset of the indices toward the high frequency range we consider it to be the most stable But unfortunately this approach is used practically nowhere and seems to be original That certainly is a significant disadvantage for its implementation in routine encephalographic investigations So if you still have not given up EEG indices analysis here some recommendations that of course must not be considered as dogma 1 Choose the bandwidth we recommend 0 1 sec for low cut and 30 Hz for high cut 2 Turn on the notch filter 3 Set the absolute threshold near 3 uV 4 Choose an appropriate algorithm of half wave detection the local extreme based algorithm has a number of advantages but 1f you use it further comparison of results with the limited existing data will be complicated The algorithm choice therefor 15 defined by your goal 5 Either fix the chosen parameters once and for all or systematically investigate the dependence of results on control parameters Don t try to manipulate parameters order to reach a certain local goal for example to prepare a remarkable illustration for your EEG description 6 A final reminder there are no standards or norms for the methods of EEG indices analysis EEG Power Spectra This secti
163. ectly The Incorrect fields show number of trials when the patient performed the task incorrectly Task performing correctness is controlled by monitoring button states according to Subject Response Processing parameters Number of trials treated as artifact 1s displayed in the Artifact fields Parameters for event related potentials computation X Groups of trials Mame Labels Correct Incorrect Artifact c B nm Group differences E 4 3 5 5 Choose Artifact processing Synchronization Subject responce processing Level uM Stimulus Defined Channels Ont EEG Stimulus 1 Define Thresholds For channels Button channel Compression fot Time interval before ms 0 Time interval after ms 0 Calculate statistical significance Use as default 100 Load Save Load from database Cancel 189 Group Differences This field defines a list of trial group pairs for calculating differential ERPs Group pairs are separated by commas Group numbers in a pair are separated by a hyphen a minus sign Press Choose button to choose group pairs see Choose Group Differences dialog Artifact Processing The following parameters are used for automatic artifact analysis and elimination Level set threshold value in uV An EEG interval a trial 1s treated as artif
164. efore running this Setup program Click Cancel ta quit Setup and then close any programs you have running Chick Nest to continue with the Setup program WARNING This program is protected copyright law and International treaties Unauthorized reproduction or distribution of this program or any portion of it may result in severe and criminal penalties and Will be prosecuted to the maximum extent possible under law Cancel Press Next button to continue installation Choose Destination Location Setup will install WinEEG in the following folder install to this folder click Next install to different folder click Browse and select another folder You can choose nat install WiInEEG by clicking Cancel to exit Setup Destination Folder MiEsar V InE E 3 Browse Cancel 16 Press Browse button if you would like to change location WinEEG program Press Next button to continue installation Setup x Click the type of Setup you prefer then click Next Typical Program will be installed with the most common options Recommended tor most users C Compact Program will be installed with minimum required options Custom You may choose the options you want to install Recommended for advanced users lt Back Cancel Select type of Setup you prefer Press Next button to continue installation Select Com
165. elect multiple trials Modify trial labels X Selected Select all Value 1 Set EE Een oc ERE OE EDD Replace value 1 gt Value Gi qm qm qm qm B M 1 00 BE I zu ev iu Press Select button to select all trials 1n the file 171 Press Set button to set new label value for the trials selected new label value must be set beforehand in the Value field of the Set group Press Replace button to replace all trial labels matching the value in the Old Value field with a new value defined in the New Value field Press Load button to load trial labels from selected ASCII file Press Save button to save trial labels to selected ASCII file The last options allow also modify manually a structure of trial a number of presented stimuli and intra stimuli intervals 42 Font dialog Defines font parameters Font Choose font name from the list Font Style Choose font style normal italic bold Size Choose font size Effects Check Underline and Strikeout options to set corresponding effects and choose font color Font style Size Tr Times New Roman Tp Trebuchet M5 F Typollpright BT F Utah Tr Utah Condensed El x Effec
166. enu9 title Optionl menu9 y Optrionz menu OPCLONS menug Option4 menu9 end endblock PLOCK DLOCKS menu 10 title Optionl menulO Option2 menulO Options 10 Option4 menulO end menu 11 Optionl 11 Option2 11 Options 11 Option4 menull end endblock 5 Limitations wee Option insert texti menu9 next Option insert text2 menu9 break Option insert text5 menu9 go MenlO text of titleld Option insert text4 menu9 quit Option insert texti 10 next Option insert text2 10 break Option insert text3 10 go 11 Option insert text4 10 quit Option insert texti menuli next Option insert text2 menull break Option insert text3 11 go Option insert text4 menull quit string length should not exceed 256 characters Not more than 256 menus can be described Total length of blocks simultaneously loaded to memory should not exceed 64 menus Not more than 128 blocks can be described A menu should not exceed 32 options A menu description including header wording names and texts to be inserted should not exceed 4000 characters
167. er all trials 5 To reduce data dispersion the EEG power dynamics 15 smoothed by moving average with averaging epoch width optimally 100 msec or 25 bins 6 ERDS is calculated as percent of signal power change for each bin in relation to average power during the prestimulus interval 30 P 1 R R x 100 The signals obtained are then averaged similarly to ERPs Wavelet ERP and Wavelet Coherence Analysis The wavelet ERP and wavelet coherence analysis 1s performed similarly to cognitive ERP computation So wavelet ERP and wavelet coherence analysis can be performed only for EEG files recorded together with stimuli presentation by PSYTASK program on an additional stimulus presenting computer These methods 15 based on signal power and coherence dynamics assessment for the given frequency range by means of source EEG wavelet decomposition To know more about this method see for example Tallon Braudry C Bertrand Oscillatory gamma activity in humans and its role in object representation Trends Cognitive Science 1999 V 3 No 4 P 151 162 and Saab MJ McKeown L J Myers R Abu Gharbieh A Wavelet Based Approach for the Detection of Coupling in EEG Signals Proceedings of the 2 International IEEE EMBS Conference on Neural Engineering Arlington Virginia March 16 19 2005 P 616 620 Recording and analysis of ERP ERD ERCoh Wavelet Power and Wavelet coherence This chapter includes a brief description of
168. ers for evacked potentials computation Time interval C Fragment 18 12 19 Ful EEG file with separate processing for each fragment Ful EEG file Duration of base line time interval ms 200 Duration of paststimulus interval m 000 Artifacts elimination parameters Threshold n 100 Channels Jal Do vou want to calculate differences of waveforms Do vou want to calcutate statistical significans of EP Cancel Time Interval Define EEG interval to be processed Selection Process interval between two vertical markers Fragment Process fragment selected from the list Full EEG file with Process the whole file calculating ERPs for each fragment separate processing separately for each fragment Full EEG file Process the whole file Duration Of Base Line Time Interval ms set the duration of interval used for base line estimation Duration of poststimulus interval ms set the duration of the poststimulus interval Artifact elimination parameters set Threshold in uV and choose which Channels to process You can choose one of the following values for the Channel parameter All Only EEG channels or Only Bio channels An EEG interval a trial is treated as artifact if an ERP absolute value for any channel and for any bin exceeds the threshold Calculate Differences of Waveforms check this option to calculate differential ERPs if Full EEG file with separate proce
169. ers will be consequently replacing one another If a block was loaded and a menu with a header 1s processed the header will be changed But after the block 1s processed completely the header defined the block that has been previously called and 15 currently being processed will be restored 3 Language Syntax Notation Convention Common notation conventions will be used in syntax descriptions as it takes place in MS DOS and in a number of programming languages like Assembler or C A key word or a syntax expression not in brackets is directly present the program Text in square brackets 1s not mandatory to be present Text 1n angle brackets must be present but its contents 1s just an example and can be replaced with another text otructure of a Menu Block Description block Block Identifier Menu Description 1 gt Menu Description 2 Menu Description 3 Menu Description n 240 endblock Block Identifier 1s a character string not exceeding 16 characters not containing punctuation signs dots commas colons etc Any block must have an identifier that will be used to program calls of this block structure of a Menu Description menu Menu Identifier gt title lt Header Text gt Option Description 1 gt Option Description 2 Option Description 3 gt Option Description m end Menu Identifier 1s a character string not exceeding 16 characters not co
170. es corresponds bandranges to an EEG bandrange Delta Theta etc In the first line within each pair total signal power or square root of the power 156 depending on EEG Spectra window 18 written for the corresponding bandrange In the second line the frequency for the given bandrange signal power 15 presented Bandrange list Choose what frequency bandranges list will be used see Setup EEG bandranges command Values Choose what values to export Power P absolute power values Amplitude A square root of absolute power values Percentage bandrange power as a percentage of total power Coherence and Phase Coherence the coherence or average coherence for defined frequency bandranges will be exported together with power spectra Phase the phase spectra or average phase for defined frequency bandranges will be exported together with power spectra Bandranges In Row Check this option to arrange spectral parameters for each channel in a single line Otherwise they will be written 1n several lines Include Column Names Check this option to add column names in the first row of the file Column names can be useful for example for data exported to Statistica software Include Row Names Check this option to add row names in the first column of the file Row names can be useful for example for data exported to Statistica software File Defines full path for the file to export data to Use the
171. es it means square root of the total signal power in a given bandrange Color scale encodes amplitude in regular intervals Measurement units microvolts Graphs Y axis shows percentage of total broadband signal power 15 in a particular band range Color scale encodes power percentage 1n regular intervals Measurement units percent Log P Graphs Y axis shows logarithm of signal power Units For coherence and auto and crosscorrelations Grad For phase Use the Fill By list disabled for auto and crosscorrelation to choose how to fill areas under a graph or a histogram None Blank white areas Bandranges Fills areas by colors defined in the standard bandrange parameters see Setup gt EEG Bandranges command Color Scale Fills areas by color scale showing power level Choose graph or map size from the Size list Use Normalization fields disabled for auto and crosscorrelation to define frequency band range used for computation and displaying normalized spectra see above Value 90 These parameters will influence on results of statistical comparison of two spectra see Analysis Comparison of results command Use Statistics field disabled for auto and crosscorrelation to show or hide results of statistical comparison of two spectra The statictical significance of differences 15 displayed be vertical bar of various length shorter bar means that significant of differences 1s lower then 0 05 p 0 05 mi
172. essing Note After recording EEG data the phrase bandwidth must be understood to mean bandwidth that is less than or equal to the instrument s maximum bandwidth 70Hz in the case of the Mitsar EEG 3 122 Montage parameters dialog consisting of six tabs 1s displayed after calling this command Go from tab to tab to define the following montage parameters a Define a list of channels for EEG acquisition corresponding to electrodes actually placed and connected see Montage parameters Electrodes dialog Also define coordinates of the electrodes b Define a list of channels the montage and their parameters such as gain bandwidth baseline see Montage parameters Channels dialog c Define colors for displaying each channel see Montage parameters Colors dialog d Define the calculated referents if there are any e g AVL see Montage parameters Referents e Test whether channels are correctly defined or view another montage 1 the list see Montage parameters View dialog 156 Setup Fragment Names command Defines list of EEG fragment names for Input Control toolbar Names of Fragments Trials dialog 15 displayed after calling this command 157 Setup Label List command Defines up to 10 user labels for Labels popup menu User Label Description dialog 1s displayed after calling this command 158 Setup Photostimulation Programs command Defines
173. ext or into any application WinWord Paint etc window by means of Edit gt Paste command 5 Selecting an interval for processing To select an interval use vertical markers Place the cursor on the time scale of the active window the cursor should change its form to Clicking the left or right mouse button sets the corresponding left or right marker The time scale for selected interval will be highlighted in color Marker position can be changed by means of the mouse Place the cursor on one of the markers the cursor should change its form to Then drag the cursor with left mouse button pressed Marker position can also be changed using keyboard Press Shift Left Right arrow keys to move left marker Press Ctrl Left Right arrow keys to move right marker Press Ctrl Shift Left Right arrow keys to move both markers simultaneously 6 Printing an EEG interval To print an EEG interval use File gt Print and File gt Print Preview commands 53 7 Deleting an EEG interval You may need to delete an EEG artifact interval To delete an interval select it and use Edit gt Clear command This command can be used to delete a part of video data only but EEG data will be kept Attention Using this command you have a risk to loss the data That 1s why the usage of Edit Clear command to mark artifacts time interval 1s the better 1deas 8 Choosing a channel to be processed
174. f asymmery of power spectra statistical comparison Cancel Select type of tables and maps while you would like to insert into MS Word The result of this function is placed below Name Battaglia Gianna Schindler Michael Date of observation 09 05 2004 Total epoch number 2 76 Comparison power spactra uV 2 P De Tm Bea Tod Fpl AvW 23 89 lt 0 190 5 56 p lt 0 319 9 39 p lt 0 119 0 80 p lt 0 117 4 63 p lt 0 000 1 02 lt 0 000 113 59 206 L1 7277777 M FS AvW 9 08 p 0 002 4 48 p 0 986 5 50 lt 0 014 0 41 p 0 708 5 60 p 0 089 2 04 p lt 0 081 loy T3 AvW 4115 p 0 249 7 59 lt 0 082 5 14 p lt 0 015 3 35 lt 0 002 193 43 p lt o 008 27 38 082 5 kn 3 Teta 5 000 0 00 Betal 2 uy 2 uy 30 00 Delta 20 00 5 000 Betaz Gamma F 000 uv uy 207 3 000 3 000 3 000 3 000 Delta 3 000 Teta 3 000 Alfa 3 000 Betal 3 000 Sp SD Sp SD 3 000 3 000 Betas 3 000 Gamma 3 000 Sp SD Comparison of normalized power spectra Normalisation band range 0 0 64 0 Hz C3 AvW 13 30 lt 0 002 15 50 p lt 0 362 23 06 p 0 011 9 62 lt 0 000 0 29 lt 0 309 0 20 lt 0 500 CAN 208 30 00 40 00 20 00 Delta 20 00 Teta 30 00 Alfa 40 00 Betal 20 00 Ea 25 25 20 00 Betaz 20 00 Gamma 20 00 a 3 000 3 000 3 000 3 000 Delta 3 000 Tet
175. fields 83 User Label Description dialog User label description Mame Jg o dl o 4 uum 4 L 224 Type Text Cancel Use this dialog to define up to 10 user labels Name Enter label name to be included the Label popup menu Select label type WinEEG uses 5 label types Type Vertical bar Channel bar Channel contour Vertical label Horizontal label Text A vertical blue transparent bar without text A horizontal blue transparent bar without text It highlights an interval within one certain channel Fp1 Ref independent of its position in the window Label length is defined by the user when creating the label A blue rectangular contour highlighting an interval within one certain channel Fp1 Ref independent of its position in the window Label length is defined by the user when creating the label A vertical gray opaque bar with text A horizontal gray opaque rectangle with text Its vertical position is defined by user when creating the label Enter label text for a Vertical label or a Horizontal label 223 94 Photostimulation Program List dialog Photostimulation program list Duration Frequency Power seconds Hz Joule co 4 M ame ea 4 eL 4 Type Rhethmic 4 Number of flashes Hash 0 Minimal interval 0 Maximal interval 0 cry 4 ea 4 m 4 Time interval
176. fined Blank fields are ignored during search Here 16 the list of search criteria that can be defined 142 Base records search parameters ID 1 1 Date fram to Time from In Investigation NENNEN Patiend Fatiend ID Diagnosis Po Date of birth from In Address Mate in the working folder Backuped Cancel Clear ID field contains a text string that must be present in the corresponding field of the database record If the text defined for search 1s shorter than the database a substring 1s searched Symbol case is ignored Blank spaces before and after the text are deleted If the ID field in the search condition contains then records containing ABC abc AbCXXxxXX xXxaBCXXx in their ID fields satisfy this condition Date From To fields define the interval of EEG acquisition dates current year for example To enable automatic search by date use DD MM Y Y Y Y date format Time From To fields define the interval of EEG acquisition times before noon for example To enable automatic search by time use 55 time format Investigation field contains a text string that must be present in the corresponding field of the database record see also ID field Patient field contains a text string for example patient name that 15 to present in the corresponding field of the database record see also I
177. for EEG files 4m for final reports for potential maps for EEG power spectra auto and crosscorrelations for EEG indices for biofeedback files Ay for ERP ERD and ERCoh 13 File Save command This command saves the active file If the file was opened from the database the corresponding record is modified when saving the file If the file is new a name 15 assigned to it automatically and a record is added to the database To save the latest changes in another file use the File Save As command Shortcuts Main Toolbar Keys CTRL S 14 File Save As command Saves the active document in a new data file A Save As dialog appears to define the new file name 15 File Compress video files command Compress or recompress video files by selected method When you run this command a Video files compression dialog appears 16 File Export Data command Saves the data a format compatible with other applications If an EEG file is active an Export EEG Data dialog appears An EEG file can be converted into text ASCII format binary format European Data Format EDF or Universal Data Format UDF Russian extension of EDF format If an EEG spectra file is active an Export EEG Spectra dialog appears on the screen An EEG spectra file can be converted into text ASCII format If an EEG indices file is active an Export EEG Indices dialog appears An EEG indices file
178. from the montage list Use down arrow button to select a different montage from the list to use as a new default You can also rename the selected montage The paper speed horizontal scale can be selected from the Speed list 60 30 15 7 5 3 75 or 1 875 mm sec The left window graphically depicts the electrodes used their position coordinates and the site scheme montage The referent electrodes are also shown 134 Montage parameters X Patient Card Channels Referents Colors Electrodes name Speed rome 30 6 Montage Parameters Electrodes dialog Use the Electrodes tab of the Montage Parameters dialog to list electrodes to be used and their coordinates You can also choose a montage from the montage list see Setup Montage List command Montage Name This field initially contains the name of default montage from the montage list Use down arrow button to select a different montage from the list for use as a new default You can also rename the selected montage Check a channel to include it 1n the list for acquisition Spherical coordinates of the electrode upon the head top hemisphere are listed to the right of the channel name The coordinate system is set as follows X axis goes from the left ear to the right one Y axis from the nape to the forehead Z axis upwards 1
179. g in the final report The Find dialog 15 displayed after calling this command Shortcut Main Toolbar 33 Edit Replace command Finds a text string in the final report and replaces that string with another one The Replace dialog 1s displayed after calling this command 34 Edit Find Selection command Use this command to find the beginning of the selected EEG time interval Shortcut Main Toolbar 35 Edit Find Fragment command Finds the beginning of an EEG fragment a trial Shortcut Main Toolbar 36 Edit Add Label command Adds a user label run the command once more to turn Add Label mode off After calling this command choose label type from the popup menu The cursor will change its shape to zm Place cursor at the desired position in the EEG window and click If you are adding a Channel or a Contour label also set its length by dragging to the desired length beforereleasing the left mouse button Shortcut Main Toolbar S 37 Edit Delete Label command Deletes a user label run the command once more to turn Delete Label mode off The cursor will change its shape to Position it over the label to be deleted and left click Shortcut 102 Main Toolbar 38 Edit Patient Card command Edits patient card for the active file document The Patient Card dialog 1s displayed after calling this command Shortcut Main Toolbar E 39 Edit Trial Labels comm
180. g parameters dialog Palette Choose a color palette from the list The palette encodes values displayed on the maps by color Slider Use the slider placed to the right of the color scale to choose a color for modification Mapping style Interpolation method Palette Sokolow Scale f Spherical splines Barycentric Red 255 Greer 0 E Blue 255 C Show electrode position Draw isopotential contours Cancel Red Set a value for the red component of the selected palette color 221 Set a value for the green component of the selected palette color Blue Set a value for the blue component of the selected palette color Interpolation Method Choose an interpolation method Spherical splines are recommended but barycentric interpolation is better if few electrodes are used Interpolation Order Set interpolation order recommended value is 2 Quality This parameter defines pixel size for the maps Best option is recommended meaning the smallest pixel size If you choose Draft maps will be painted about three times faster Show electrode position Check if electrode position should be shown on the maps Draw isopotential contours Check if isopotential contours should be shown on the maps 82 Names Of Fragments Trials dialog of fragments trials F3 Eves Closed F4 Photostimul Fh Hiperventil Enter fragment names in the F2 F11
181. he EEG as acquired and the bottom one depicts the biofeedback parameter dynamics graph Use Recording menu commands to start and to stop EEG acquisition Use the controls of the Filters bar to change speed time scale gain and bandrange for the EEG monitored in the top window pane see EEG Window Use the Calculator bar to choose a biofeedback parameter Use the Biofeedback bar to change window mode and to set additional parameters of biofeedback sensitivity inertness etc Attention The values defined by Setup gt EEG Bandranges command affect biofeedback acquisition results Remember also that almost all the parameters except sensitivity must be defined before starting a biofeedback parameter dynamics acquisition Mode 3 The working mode displays current biofeedback parameter values graphically In this mode the top and the bottom window borders have different colors The boundary between the colors shows a relative threshold above which the biofeedback parameter value should be kept The biofeedback parameter value is depicted by changing the height of a vertical colored bar Attention Window Mode 2 or 3 can be chosen only if EEG acquisition is on not when analyzing investigation results recorded in the database 63 3 Final Report Window The WinEEG Final Report window is similar to WordPad but with some WordPad features disabled See WordPad Help to learn more about text editing by means of Edit menu commands a
182. he arrangement of buttons in the main toolbar use View Toolbar Customize Main Toolbar command You can also move or delete buttons by dragging them while holding the Shift key down Click To L3 Create a new EEG file E m 5j 8 Open data EEG spectra file etc Click the arrow to open database list Save the active file to the database Close the active document Open the Export file format menu Print the active document Preview the active document before printing Exit WinEEG Undo last action when editing final report text Mark selected time interval of EEG record as artifact Cut selected block from final report text to clipboard Copy active window contents or selected block of text from final report to clipboard Paste the clipboard content to final report text Delete selected block from final report text or selected interval from data plot Find given text in the final report Find the beginning of selected plot interval Find the beginning of a plot fragment trial Add a user label or turn Add Label mode off Click the arrow to open label list Delete a user label or turn Delete Label mode off sj C9 EJ E EJ 3 8 EJ 9 11 Find nearest user label beyond the left border of the plot window Find nearest user label beyond the right border of the plot window View or edit patient card Decrease se
183. he average spectrum is calculated for each separate channel over all non artifact EEG record epochs in the single interval You may think that choosing EEG spectral analysis parameters is too cumbersome If so we recommend you use a standard parameter set epoch length 4 sec 5096 overlapping zero order of polynomial trend Hanning time window 0 2 1 25 Hz range of low frequency signal 200 mkV maximal low frequency signal power The duration of the analyzed interval should not be less than 10 sec for at least 4 epochs to be averaged Use other settings and parameter values only when needed to obtain data compatible with that described in the literature Event Related Potentials This section describes the main features of the event related potential ERP acquisition tool We assume you are familiar with the ERP method WinEEG permits recording the simplest long latency visual evoked potentials evoked by a photostimulator flash as well as event related potentials ERP such as P300 wave mismatch negativity MMN conditionally negative variance CNV and many others In evoked response 29 measurements an additional computer 15 used as a universal device for presenting visual and auditory stimuli It is connected to the WinEEG computer by a null modem link cable through the COMI or 2 serial port order to synchronize stimulation and EEG recording The stimulus presenting computer should use PSYTASK 2 x software working
184. he beginning and the end of the averaging epoch relative to the first time readout of the selected EEG interval C2 Patient Dmitriev Dmitry Date of birth 1975 Date 11 02 2001 Fragment Un 8 ms 32 40 ms 40 46 ms On the right side of the window there is Maps bar In the top of the bar there is a color scale and below it controls allows to modify mapping parameters are placed Use the Scale list or and keys to change color scale sensitivity Use the Step list to change averaging epoch length Use the Size list to zoom maps Use the Setup gt Mapping Style command to change color scale palette and appearance of maps Use Edit gt Copy command to copy maps visible in the window to the clipboard They can then be pasted into final report text or into any application WinWord Paint etc window by means of Edit gt Paste command 65 5 EEG Power Spectra Auto Crosscorrelations Window This window 15 designed for EEG power spectra and correlation analysis On the right side of the window there 1s Spectra bar and at the window bottom there 1s the Calculator bar 151 1 Fp2 Avw 12 0 uv 2 0 0 uv 2 4 F8 A Ww Scale we 12472 7 20 Value 4 80 v 2 40 Fill b None T3AvW 4 4 Size uv 2 100 7 20 i Normalization 4 80 From 2 40 0 00 Hz
185. he montage Use High Cut Hz list to choose EEG bandpass high frequency cutoff To change high cutoff only for a selected channel press and hold Ctrl to avoid changing cutoff frequency for all channels that are visible in the montage Use Low Cut Hz list to choose EEG bandpass low frequency cutoff To change low frequency cutoff only for a selected channel press and hold Ctrl to avoid changing cutoff frequency for all channels that are visible in the montage Use Notch Hz list to turn notch 50 or 60 Hz filter on or off To change notch only for a selected channel hold Ctrl pressed otherwise notch will be changed for all channels that are visible in the montage Use Baseline field to change baseline To change baseline only for a selected channel hold Ctrl pressed otherwise baseline will be changed for all channels that are visible in the montage 25 Channel Names Bar Fpz Hef nV cm AD nyem Fz Het AO nv zem F4 Ref AO nv cm AO nv zem T 3 Ref AO nv zem C3 Ref AO nv zem AO nv zem C4 Ret niem T4 Ret AO T5 Ref nV cm F3 Ref AO nv zem P2 Ret nvm P4 Ret AO nv zem T 5 Ref AO nv zem O1 Ret AO nv zem 02 AO nv zem Cb Ret AD nv zem Biol 2 AO 26 Maps Bar Map Window 50 0 50 0 nv 83 This bar is placed at the left side of the EEG window and is used to select
186. his command a Record List Dialog 1s displayed for searching ERCoh files in the database or in the archive 9 File Open Another Database gt Biofeedback File command This command opens a biofeedback file from the database in a new window You can open several biofeedback files simultaneously Use the Window menu commands to switch between opened files See Window 1 2 command As you run this command a Record List Dialog is displayed for searching biofeedback files in the database or 1n the archive 10 File Open File command This command uses the Windows standard file open interface to open a previously recorded data file EEG EEG spectra etc in a new window You can open more than one file Use the Window menu commands to switch between opened files See Windows 1 2 command When you run this command a File Open dialog appears 11 File Import Data command This command opens files of other formats and converts them to EEG format When you run this command a File Open dialog appears 12 File Close command Closes all windows for the active data file EEG or others WinEEG will ask about saving changes before closing the file Shortcuts Main Toolbar Bi Mouse Click icon in the right top corner of the file document window Or double click the window document icon in the left top corner of the window For different file types different icons are used as follows 97
187. iagnosis Enter a brief disease diagnosis The final report may contain more detailed description Date of birth Enter the date of patient s birth Use DD MM YYYY date format for successful database search Sex Enter patient s sex M F Address Enter patient s address Note Enter other useful info patient s insurance policy number for example the fields of patient card are not mandatory but can be useful when searching database Remember that all patient info would be automatically added to the final report The fields with information about available disk free space place near patient card 2 Montage Parameters Channels dialog Use the Channels tab of the Montage Parameters dialog to define the list of channels included the montage and for setting their parameters You can also choose a montage from the montage list see setup Montage List command 129 Montage parameters X Channels Colors View No Name Gain LowCut High Cut Notch Baseline Montage name 32 chan a 1 Fol Ref Ou 0 3 053H2 30 45 55 2 Foz Ref Ou 03 053H2 30 45 55H2 0000 Electrode 0 3 3 30 45 55H2 EEG channels EEG channels F7 Rel Cuv e 03 0 53 30 4 amp 55Hz 000 F3 Rel Ouv s 0 3 DL53Hzg 30 4 amp 55Hz 000 Fz Rief Ouv s 0 3 0 53 30 4 amp 55Hz 0000 F4 Rel Duv sD 3 0 59 30 4 amp 55Hz 000
188. ient should ignore the stimulus but pressed the button instead Artifacts number of artifact trials mean reaction time for the 1st button RT2 mean reaction time for the 2nd button var RT1 mean square variation of reaction time for the 151 button var RT2 mean square variation of reaction time for the 2nd button 67 List of channel pairs and parameters for EEG coherence and EEG crosscorrelations dialog List of channel pairs and parameters for EEG coherence and EEG crosscorrelations Channel pairs of file Second list Fpl Av Fat Av FFAA Fol Fp AW vw Selected pairs Fat Av Fh Siw C3 Fpl Avw T3wv Cat Fol Ay Fpa Mat used d Fadia Fez C Al pairs Fas Fol aviv FAV IV Mok used Feta TIA TEA E AM pairs TSA UU Avi Fpl Avw F3 Faecal C3 hw Pd 1 Fost FT Don Fdw All pairs T defy Selected pairs C3 ARAM Cathal Selected pairs TEA 3 Pdf Fpl Avi 3 DAS 1 DZA Fpl Av Dz 5 Cay Fpl vw TSA PRA A Ce Avi Pa 1 4 PRA Pas Fpz Avw 1 TIA Pw PAAA Fpl Avi 3 TES PASA
189. ill be printed unless specific pages have been specified the Print dialog that is displayed on calling this command The exception 15 the EEG window where you position the two vertical cursors to select the EEG interval you wish to print Use File Print Preview command to preview the document you are going to print Shortcuts Main Toolbar 99 Keys CTRL P 19 File Page Setup command Sets the print page parameters The Page Setup dialog 15 displayed on calling this command 20 File Print Preview command Use this command to display the active document as it would appear when printed When you choose this command the main window will be replaced with a print preview window in which one or two pages will be displayed in their printed format Use print preview control bar for detailed preview Shortcut Main Toolbar 21 File Print Setup command Use this command to select a printer and to set printer options The Print Setup dialog box 1s displayed on calling this command 22 File 1 2 3 4 commands Use the numbers and filenames listed at the bottom of the File menu to open any of the last four documents you have been working with 23 File Exit command Use this command to end your WinEEG session Shortcuts Main Toolbar Mouse Click icon in the right upper corner of the WinEEG window Double click application icon in the left upper corner of the WinEEG window Keys AL
190. ill be shortened from its end Calculate Statistical Significance Check this option to calculate statistical significance of ERP difference from baseline separately for each ERP or differential ERP and for each time readout or for each pair of readouts taken to calculate differential signal The Student criterion 1s used to estimate statistical significance Use as Default Check this option to have the current parameter values saved and then used for next EEG file processing Press Load button to read parameter values from a file Press Save button to save current parameter values to a file Load from database Press this button to load standard parameters of spectra computation compatible with normative database To define correct parameters press button Load from database and select corresponding condition from the list of conditions 191 Exi Select condition condition Auditory S press 100 192 56 Parameters For Event Related Desynchronization Computation dialog To calculate ERD additional information on stimuli presentation structure each trial is used together with source data To group trials by stimuli types or by response task trial labels are used These parameters are defined beforehand when creating editing stimuli presentation protocols by means of PSYTASK program installed on the presenting computer Parameters for event related des
191. in concert with WinEEG In addition a pushbutton connected to the ECG channel input can be used for monitoring user response The button must be designed to bypass amplifier inputs bypassing by means of a low impedance resistor 100 Ohm when the button is OFF and also to submit a potential difference of 100 500 uV to the amplifier input when the button 1s pressed ON Although EEG 15 being monitored and recorded non stop during the whole investigation non overlapping EEG intervals trials will be selected for ERP calculation for synchronizing signal and used for ERP summation If flash ERPs are monitored then trial length and pre stimulus interval duration are set as processing parameters In this case you may calculate ERPs for a selected EEG record interval for the whole record or for each fragment separately If an additional stimulus presenting computer 1s used trial length 1s defined by a protocol set the PSYTASK program In this case one trial can present more than one stimulus Several different ERPs are calculated for different trial subsets To sort trials into subsets special trial labels arbitrary integer numbers are also set 1n the stimuli presentation protocol Artifact records are eliminated during ERP calculation For cognitive ERPs the patient response 1s also analyzed reaction time and percent of error are calculated separately for each trial subset Finally you can average ERP over a group of patients selected
192. ind source signals related to the artifacts Theoretically the artifact related signals usually correlate with brain signals As results there is no way to separate pure artifact related components That 15 why some EEG signals will be suppressed also by this method Our studies are shown that this method will suppress EEG and ERP signals for the frontal recording sites to a marked degree if a standard referential montage 15 used The better results were received for average referent montage Finally the smaller EEG and ERP suppression was observed when we used weighted average referent excepting and Fp2 channels These studies are shown that ICA method will give smaller signal distortions in comparison with PCA method interval used for estimation of spatial filter matrix That 1s why the visual inspection should be done after performing this procedure If the results of artifact correction are not satisfactory another time interval should be selected for analysis 1 Attention The quality of work of this correction procedure depends on selection of time Automatic and manual artifacts elimination WinEEG program includes different artifacts detection procedures The simplest way is a visual inspection of EEG record and marking the time intervals included artifact related signals for more information see chapter EEG window The automatic artifact detection procedures base on comparison of any parameter of EEG signal with defined thre
193. ing Photostimulation on off command wait for the time needed change the photostimulation frequency or turn the photostimulator off and so on After finishing the photostimulation procedure stop EEG recording 7 Stop EEG acquisition using the Recording Stop command 8 Save the newly created EEG file into the database using the File Save command 9 Remove the electrodes and let the patient go D Attention To avoid data loss do not carry out Step 9 before Step 8 10 Analyze the newly recorded EEG See EEG window 11 Open the Final Report window using the Analysis Final Report command 12 Compose the final report and save it to the database using the File Save command 13 Print the final report and illustrative fragments of the EEG using the File Print command 14 Close the WinEEG window using the File Exit command Note The EEG recorded to the database 1s the raw one acquired using monopolar montage in relation to reference electrodes with the bandwidth 0 5 30 Hz for Mitsar EEG 2 or 0 15 70 Hz for Mitsar EEG 3 But the EEG displayed on the screen is reformatted and filtered according to the montage parameters that have been set see Setup Montage List command The raw EEG data may be reformatted into any montage without limitation Data Archiving 23 Don t forget the main difference between paper and paperless technologies By recording an EE
194. ing of spike like waves Amplitude temporal parameters are the following Dur 1 Duration 1 defined as the time interval between two successive maxima or minima of an EEG wave Durl 2 Duration 2 defined as the time interval between two successive inflection points 1 e points where the absolute value of the first time derivative of the wave form has a maximum value of an EEG wave Dur2 Amp Ampz TU om 9 182 Duration A defined as the time interval between the beginning and the pick of an EEG wave DurA Duration B defined as the time interval between the pick and the end of an EEG wave DurB Amplitude A measured from the beginning to the pick of EEG wave AmpA Amplitude B measured from the pick to the end of EEG wave AmpB Amplitude measured from the baseline zero voltage to the pick of EEG wave AmpZ Slope 1 defined as the maximum magnitude of the first time derivative during the leading edge of an EEG wave 511 Slope 2 defined as the maximum magnitude of the first time derivative during the trailing edge of an EEG wave 512 10 Sharpness defined as the second time derivative of an EEG wave at its pick d P d t Dipole and spatial parameters fields define a usage and limitation for corresponding parameters values using during searching of spike like waves Dipole and spatial parameters are the following l 2 3 4 Use dipole parameters if this button 1s checked the dipole
195. ion After calling this command one of the Wavelet Coherence dialogs 15 displayed to define additional processing parameters Raw data 1s reformatted according to montage parameters before processing Attention EEG reformatted to a bipolar montage cannot be mapped If you wish to view maps choose a monopolar montage for the active EEG window before calling this command Electrode coordinates are additional parameters for maps see Montage parameters Electrodes dialog Incorrect coordinate settings can disable mapping Shortcut Main toolbar 106 Analysis Comparison of results command Run this command to compare spectra ERP or ERD The results can be compared both between different condition or subjects or with normative database The Processing results comparison dialogs will be displayed on calling this command 107 Pop up menu of EEG window Add Spike command Run this command to add spike label for selected channel and time sample 108 Pop up menu of EEG window Delete Spike command Run this command delete selected spike label 109 Pop up menu of EEG window Change Channel command Run this command to change main channel for selected spike label 110 Pop up menu of EEG window Copy EEG command Run this command to copy EEG time interval into clipboard for selected spike 111 Pop up menu of EEG window Copy Spike command Run this command to copy spike waveform into clipboard for selected spik
196. ity depends on paying special attention to the placement of common point and reference electrodes 2 Connect the electrodes to their respective inputs on the front panel of the amplifier block 3 Set the electrode impedance checking mode using Recording Impedance command If the impedance value is satisfactory less than 5 KOhm close the Control of Electrode Impedance dialog Otherwise re install those electrode s showing excessive impedance 4 Run the File New command Fill in the patient card choose a montage and check it When these actions are completed successfully a new EEG window will be displayed on the screen 5 Run the Recording EEG Monitoring command Visually check the quality of the live EEG displayed in the new window If any channel is acquiring EEG poorly re install the corresponding electrode s Check EEG acquisition quality using a monopolar montage without averaging 6 Run the Recording EEG Recording command to start recording signals to a file To stop recording run the Recording EEG Recording command once more One fragment of the EEG will be recorded Record another fragment if necessary Before recording a fragment its name should be set using the Fragment list on the Recording bar Input Control Toolbar If photostimulation 1s necessary set its frequency using arrows in the PS Frequency field of the Recording bar start the EEG fragment recording turn the photostimulator on using the Record
197. king folder or press button to the right of the name field to browse drives and to select a folder Database Of Event Related Coherence ERCoh Base Pathname Enter full path for ERCoh database or press button to the right of the name field to browse folders Database Of Event Related Coherence ERCoh Working Folder Enter full path for ERCoh working folder or press button on the right of the name field to browse drives and select a folder Database Of EEG Crosscorrelation Database Pathname Enter full path for EEG crosscorrelation database or press button to the right of the name field to browse folders Database Of EEG Crosscorrelation Working Folder Enter full path for EEG crosscorrelation working folder or press button to the right of the name field to browse drives and to select a folder 213 If there 15 no file or folder with the name you entered new one will be created 1f possible when you press the OK or Apply button 73 Database Parameters Browser Settings dialog This dialog defines fields for Record List dialog Field Check those fields you wish to use in the record list Width Set width 1n pixels for each field used in the record list Data base parameters Date bases of raw data Date bases of processing results Browser settings Base records search parameters Width Width Width width Position ID a 1 width 4l 2 v Date a 2 width 80 m m Time B4
198. l scales paper speed mm sec and sensitivity Ohm cm are maintained with 10 accuracy Color printing maintains hues when printing spectra graphs and topograms Monochrome printers replace hues with gray levels T Maintaining EEG Database and Processing Results WinEEG has a built in database for simplifying data save and search Using this database is not mandatory but it provides features that are often useful These include automatic conditional data search long file archiving and record restoration tools and dividing the whole set of EEG records into several independent databases which may be placed on different changeable magneto optical disks or CD of large capacity Quick Start The following steps describe briefly how to acquire an EEG and to create a final report 1 Place the electrodes on the patient s head For a normal investigation 19 electrodes are placed using the International 10 20 system Also a common point electrode a N electrode and reference electrodes must be placed Attention Common point and reference electrodes are to be placed in any case whether bipolar monopolar montage 15 used If EEG 15 assumed to be recorded in reference to ears two reference electrodes are placed on the ears A reference electrode can be placed on the forehead and connected to Al or A2 input the appropriate electrode is provided in the set and a corresponding 22 montage is set in the program EEG signal qual
199. lculated and the others would be ignored Each edit box in the Statistical report dialog defines one search criterion A record satisfies search conditions if it contains all features that have been defined Blank fields are ignored during search Here 16 the list of search criteria that can be defined 146 ID field contains a text string that must be present in the corresponding field of the database record If the text defined for search 16 shorter than in the database a substring 1s searched Symbol case 1s ignored Blank spaces before and after the text are deleted If the ID field the search condition contains then records containing ABC abc AbCXXXxxXX xXxaBCX Xx in their ID fields satisfy this condition Date From To fields define the interval of EEG acquisition dates current year for example To enable automatic search by date use DD MM YYYY date format Time From To fields define the interval of EEG acquisition times before noon for example To enable automatic search by time use HH MM SS time format Investigation field contains a text string that must be present in the corresponding field of the database record see also ID field Diagnosis field contains a text string that must be present in the corresponding field of the database record see also ID field Date of Birth From To fields define the range for dates of patients birth for example from
200. le format was copied from other encephalographic hardware Second files are added if there Is a need to create a new database for example if the old one is lost If Add command 15 called a File Open dialog appears Using the standard Windows browsing interface find the file of interest and open it If the selected data file has a compatible format EEG 1 5 EEG 3 0 or WinEEG an Open dialog will appear There two exceptions EEG 1 5 EEG files with bipolar acquisition and EEG 3 0 spectra files cannot be added to respective databases 139 Delete button calls the record and data deletion function Delete Data From Database dialog is then displayed Backup button calls the function that backs up data files from the working directory to an archive Backup Data To Archive dialog appears then Restore button calls the function of data file copying from archive to the working directory Restore Archive Data dialog appears then Report Button calls the function that creates a statistical report including quantity EEG observations carried out during selected time interval and or with different groups of subjects and insert resulting table into MS Word The Statistical results dialog appears then 140 9 Batch EEG Processing dialog Montage list allows automatic changing of source EEG file montage Batch EEG processing X Montage Source EOG rejection Parameters Artifacts rejection Ban
201. le media The best driver found will be installed Search removable media floppy CD ROM Include this location in the search FAUSBDRV Don t search will choose the driver to install Choose this option to select the device driver from list Windows does not guarantee that the driver you choose will be the best match for your hardware lt Back gt Cancel Found New Hardware Wizard Completing the Found New Hardware Wizard The wizard has finished installing the software for Electroencephalograph Mitsar EEG Click Finish to close the wizard 8 Click the Finish button to complete installation 2 Video Jammer driver installation m E Insert the installation CD into your CD ROM DVD ROM Connect your Jammer USB cable to an available USB port on your computer Windows automatically detects the device Found New Hardware Wizard dialog box appears Select No not this time and then click the Next button Select Install from a list or specific location Advanced and then click the Next button Select Search the best driver in these locations uncheck Search removable media floppy CD ROM check Include this location in the search and then click the Browse button Find USBDRV folder on your installation CD and then click the OK button 14 Click the Next button Windows will automatically install driver Windows ask you to specify corresponding inf and
202. liseconds 4 Define reaction type for Left Right or both buttons One of the following reaction types can be chosen No don t analyze signal from the button Press patient must press the button in response to stimulus presentation Average reaction time number of correct trials and number of errors will be determined during processing A trial Is treated as an error if the patient did not press the button or pressed it more than once or pressed it not within the time interval that had been defined Don t Press patient must not press the button in response to stimulus presentation Correct trials and errors false alarms or commissions are counted during processing 5 Choose a Channel for each registered Attention There are different modifications of buttons simple button one level button advanced button two levels button and digital button Setting of button channel depends on what type of button was used Any level signal should be used for simple button Both Low level and High level signal can be used for advanced button if the subject press both key during investigation The digital inputs Dig1 Dig2 should be used for digital button Press Reset to reset default parameters Press Cancel to cancel response processing Note Response processing results can be viewed in Results Of Averaging And Subject Response Processing dialog called by Analysis Group Info command in an ERP window
203. lock endblock brackets In simplest cases menu description file has only one menu block The block term is introduced into the syntax in order to lessen description text size It 1s very favorable to organize menus with wordings used more than once into blocks It seems also reasonable to unit logically closed pieces of a hierarchical menu system into blocks 2 Hierarchical Menu System Cycle To understand hierarchical menu system programming principles better let us study a hierarchical menu system cycle First of all just after a hierarchical menu system 15 called the first block in order is loaded to memory Then the first menu in the block 1s processed All necessary information 239 on this menu is read into RAM from the resource file A wording selection window is formed automatically menu header if defined is highlighted and the control goes to the procedure processing operator commands by means of these commands an user can choose one of existing wordings After a wording has been chosen corresponding text is inserted into final report and processing procedure starts In the simplest case when there 1s no menu block call commands among control transfer commands corresponding to selected wording next menu 1s processed Control transfer commands can enable transfer to next menu in order or to miss a number of menus described within executed block In a more complicated case one more menu block is called to be executed In
204. m CUu 165 EL A ING OIG E 166 adea iur 167 FOREDI C 167 708 2171712 DTE mmt 168 SIE d qo 169 29 Delenmeor Selected eue das 169 40 Delenn video dala 170 v Trial Labeli idl OT utn cem eU PAL 170 A2 TITIO CH 171 POV OTA CIO 172 44 LP malvebort generatton didlogysu edet CI Pd dd 172 Temp aie LA S DR IM CIE 173 E ONE TETTE ARI 2 174 47 Parameters Of EEG Indues Computation s e ri Ur ES eR 175 45 Parameters Of EEG Spectra Computation dialog Sas ec i te e PEE E 176 49 Parameters Of EEG Auto and Crosscorrelation Computation dialog ccena
205. m 14 Click Update button If synchronization COM ports are defined correctly the progress bar will display a process of transferring of task protocols from PSYTASK program to WinEEG program Otherwise WinEEG program will report that the slave computer doesn t respond 15 Change the COM ports and their parameters if it is necessary using Change Parameters of External Devices command of PSYTASK program and Setup Equipment configuration 32 command of WinEEG program and perform 12 14 steps It 1s necessary to find correct combination of COM ports Attention It is necessary to perform steps 12 14 every time when the list of tasks or A their parameters is changed in PSYTASK program Attention PSYTASK program is able to send correct task protocols Please be attentive and check new task protocols before updating list of protocols for WinEEG program Carrying out of ERP studies 1 Place the electrodes on the patient s head For a normal investigation 19 electrodes are placed using the International 10 20 system Also a common point electrode a N electrode and reference electrodes must be placed bipolar or monopolar montage is used If EEG is assumed to be recorded in reference to ears two reference electrodes are placed on the ears A reference electrode can be placed on the forehead and connected to A1 or A2 input the appropriate electrode is provided in the set and a corresponding montage is set in the program
206. manually selected EEG sample can be performed using horizontal scroll 35 bar of EEG window selection of sample in EEG window to which corresponding video frame will be displayed can be done using Sample slider placed at the top of EEG window 36 Export and Import the data There is a possibility to save raw EEG data for selected time interval or whole EEG record to anther data format The WinEEG program supports the next data formats for export raw EEG data 1 ASCII data format The columns of resulting data file correspond to montage channels and rows to time samples The data is processed before exporting according to the montage parameters bandpass filtering and artifacts correction procedures and is stored to the file in microvolts 2 Binary data format The data is stored as 4 bytes float number in multiplexed format 1 e letting J number of montage channels and I number of time points samples in selected time interval the data points are as follows data point 1 for channel 1 data point 1 for channel 2 data point 1 for channel J data point 7I for channel 1 data point 1 for channel 2 data point ZI for channel J The data is processed before exporting according to the montage parameters bandpass filtering and artifacts correction procedures and 15 stored to the file in microvolts 3 European Data Format EDF that supported by software developed by another companies The data 15 p
207. mark Place cursor on an object of interest for example on another button and click The Help topic will be shown for the item you clicked Shortcuts Main toolbar Keys SHIFT F1 177 Title Bar The title bar is located along the top edge of a WinEEG window a document window or a dialog It displays application name document name or dialog name To move a window or a dialog drag its title bar A title bar may contain the following elements Application icon in the left top corner of the application window for calling application system menu Document icon in the left top corner of a document window for calling document system menu 125 Maximize button in the right top corner of a window Minimize button in the right top corner of a window Restore window size button in the right top corner of a maximized or a minimized window Close button in the right top corner of a window closes document or application Application name Document name Dialog name 178 Scroll bars Placed at the right and bottom edges of a document window The scroll boxes inside the scroll bars indicate your vertical and horizontal position in the document You can use the mouse to scroll the document 179 Size command System menu Run this command to size the active window by means of arrow keys After the cursor shape has changed 1 Choose what window edge to move left right top or bottom by pressing a correspon
208. mmands 90 Start stop recording of video data Use this command to reset constant component of the signal Turns photostimulator on off Starts a photostimulation program Starts presenting stimuli for ERP acquisition Turns on off music for auditory biofeedback Checks calibration of the amplifiers Enables automatic measurement of electrode impedance Rewinds the EEG window left Plays back the EEG window left Plays back the EEG window right Rewinds the EEG window right The Analysis menu offers the following commands Final Report signal Parameters EEG Mapping EEG Indices EEG Spectra EEG Crosscorrelations Spectra Density Array Source distribution LORETA Spectra power distribution LORETA Dipole Source BrainLock Nonlinear Analysis Spike Detection Spike Averaging Remove EOG Mark artifacts Artifacts correction Bandrange filter Compute ERP Compute ERD Compute ERCoh Compute Wavelet Compute Wavelet coherence Comparison of results Add Spike Delete Spike Change Channel For EEG Window Opens a final report Display signal parameters table Opens an EEG Mapping window Calculates EEG indices for a selected interval Calculates EEG power spectra and the coherence function for a selected interval Calculates EEG power auto and crosscorrelation for a selected interval Calculate and display hide spectra density arrays in EEG window Runs LORETA application and st
209. n of differences of waveforms is very useful for ERP analysis To do this the averaging Group of differences should be defined The three useful groups of differences can be defined for mentioned above example Deviant Standardl Deviant2 Standard2 and Deviant Standard In this case the processing parameters will be the next 34 2 1 4 3 6 5 The artifacts elimination procedure based on comparison absolute voltage of EEG with defined voltage threshold The recommended value of voltage threshold is in voltage interval from 70 to 100 uV Attention Select Only EEG mode for artifact detection if the micro switch signal was recorded Otherwise all sweeps including subject response will be eliminated Usually the synchronization by first stimulus is recommended Another setting of synchronization parameters can be used if two or more stimuli in the trials are presented with different intra stimuli interval The parameters of subject response processing should be defined if signal of micro switch was recorded only Finally WinEEG have a number of predefined sets of ERP processing parameters saved in the files into WinEEG ERPPARAM folder and corresponding to each example of task included in PSYTASK program P300 PAR for Odd ball task Go NoGo RAP for Go NoGo task TOVA PAR for TOVA task PAT H PAR PAT HLR PAR PAT LR PAR for reversed pattern tasks The parameters of computation of ERD ERCoh and Wavelet
210. nd Format menu commands The major differences are as follows 02 69 rtf Patient Dmitrie Dmitry Birth date 1975 Sex Investigation 6 9 Date 11 02 2001 Time 17 33 28 First the Final Report window has a built in final report generator Second WinEEG allows the final report file to be created automatically in the EEG database working folder and to be opened together with the active EEG file In addition the patient card 1s automatically inserted in the text when generating a new final report Third the EEG database enables the final report file to be backed up automatically along with EEG files Fourth WinEEG enables the insertion of templates in the final report text You are not obliged to use the built in WinEEG final report editor To use Microsoft Word and to keep all the advantages of the built in editor you should install MS Office 2000 and customize WinEEG for using Microsoft Word see Setup gt Final Report command 64 4 EEG Maps Window This window displays maps of instantaneous ERP values for a selected EEG interval The EEG interval is divided into non overlapping epochs with length defined by the Step parameter value Thus the number of maps displayed depends on the selected interval duration and on the Step parameter value For each channel and each epoch time averaged ERP values are used as input data for an interpolation algorithm Under each map there are figures displaying t
211. nding parameters values using during searching and elimination of eye blink artifacts The set of eye blink artifact parameters are the following l 2 3 Remove eye blinks define a usage of eye blink artifact detection procedure Dipole location Y coordinates gt and Dipole location Y coordinates gt fields define an appropriate values of Y and Z coordinates of dipole source of eye blink artifact wave Dipole eccentricity ECC gt field defines an appropriate value of eccentricity of dipole source of eye blink artifact wave Polarity field defines a polarity of eye blink artifact wave Waveform duration ms gt field defines minimal duration of eye blink artifact wave 183 Attention Both monopolar and bipolar montages could be used for EEG to which automated spike detection 15 applied But dipole source parameters will be not estimated for EEG at bipolar montage 52 Averaged spikes calculation dialog Averaged spikes calculation Time interval Selection fragment 10 37 50 Ful EEG file Duration of base line time interval m AL Duration of paststimulus interval m 350 M Calculate statistical significance 0 1005 Cancel Time Interval Define EEG interval to be processed Selection Process interval between two vertical markers Fragment Process fragment selected from the list Full EEG file Process the whole file Duration Of Base Line Time Interval ms
212. necessary for development of effective spike detection methods Gotman J Gloor P Automatic recognition and quantification of interictal epileptic activity in the human scalp EEG Electroenceph clin Neurophysiol 1976 Vol 41 P 513 529 Gotman J Wang LY State dependent spike detection concepts and preliminary results Electroenceph clin Neurophysiol 1991 Vol 79 P 11 19 P Y Ktonas Automated spike and sharp wave SSW detection In Methods of analysis of brain electrical and Magnetis signals EEG handbook revised series Vol 1 A S Gevins and A Remond Eds 1987 Elsevier Science Publishers B V 211 241 pp P Van Hesse H Hallez B Vanrumste Y D Asseler P Boon Evaluation of temporal and spatial EEG spike detection algorithms From the other hand the usage of additional parameters characterizing the spatial distribution of potentials for example equivalent dipole parameters can increase a specificity of detection method D Flanagana R Agarwala Y H Wanga J Gotman Improvement in the performance of automated spike detection using dipole source features for artefact rejection Clinical Neurophysiology 2003 Vol 114 P 38 49 A Ossadtchi S Baillet Mosher D Thyerlei W Sutherling R M Leahy Automated Interictal Spike Detection and Source Localization in MEG using ICA and Spatio Temporal Clustering Clinical Neurophysiology 2003 submitted The amplitude temporal parameters using by WinEEG program are the followi
213. nes the list of channels for the AvR referent To calculate the referent signal the encephalograms of the marked channels are averaged The Average Av group defines the list of channels for the Av referent To calculate the Av referent signal the encephalograms of the marked channels are averaged 132 Montage parameters X Fatient Card Channels Referents Colors VIEW Electrodes Montage name Right average Fp2 Fr MFE M ff P3 M Pz Pa 02 M d F ad Lett average SL Fal gt Fol T r4 T M Ce T4 WPa Pz TE o ch sd Weighted average Bw Average Av ME Iw Fe v I T3 lv Ce I C4 I Th P3 gt 4 v TE Mol O2 th gt Add F d hd Modify transformation matris Weighted Average AvW group defines the list of channels and weights for AvW referent You can choose a t
214. ng 1 Duration 1 defined as the time interval between two successive maxima or minima of an EEG wave 1 2 Duration 2 defined as the time interval between two successive inflection points 1 points where the absolute value of the first time derivative of the wave form has a maximum value of an EEG wave Dur2 3 Duration A defined as the time interval between the beginning and the pick of an EEG wave DurA Duration B defined as the time interval between the pick and the end of an EEG wave DurB Amplitude A measured from the beginning to the pick of EEG wave Amplitude B measured from the pick to the end of EEG wave AmpB Amplitude measured from the baseline zero voltage to the pick of EEG wave AmpZ Slope 1 defined as the maximum magnitude of the first time derivative during the leading edge of an EEG wave S11 9 Slope 2 defined as the maximum magnitude of the first time derivative during the trailing edge of an EEG wave 512 10 Sharpness defined as the second time derivative of an EEG wave at its pick d P d t D P Y Ktonas Automated spike and sharp wave SSW detection In Methods of analysis of brain electrical and Magnetis signals EEG handbook revised series Vol 1 A S Gevins and A Remond Eds 1987 Elsevier Science Publishers B V 211 241 pp The dipole parameters using by WinEEG program are the following 39 1 Relative residual energy
215. ng Stop command 10 Save the newly created EEG file into the database using the File Save command 11 Remove the electrodes and let the patient go D Attention To avoid data loss do not carry out Step 11 before Step 10 33 10 Analyze the newly recorded EEG using commands Analysis Compute ERP command Analysis Compute ERD command Analysis Compute ERCoh command Analysis Compute Wavelet command omission and commission errors the signal from special micro switch should be recorded To do this 1 Connect micro switch to ECG socket 2 Add ECG channel to montage planed to use 3 Don t forget to define the parameters of processing of button signal t Attention If it 15 necessary to study subject reaction time and task performance parameters Computing and analysis of ERP ERD or ERCoh To compute and analyze ERP ERD ERCoh or Wavelet three steps should be perform 1 Manual or automatic artifact rejection 2 Computing the ERP ERD ERCoh or Wavelet using Parameters For Event Related Potential Computation Parameters For Event Related Desynchronization Computation Parameters For Event Related Coherence Computation and Wavelet Decomposition dialogs 3 Analysis of ERP ERD ERCoh or Wavelet using ERP window We don t describe details in this chapter For more information see corresponding chapters see below But we should to make a number of definitions to simplify understanding of used
216. ng 15 set equal to 50 beginning with the second epoch each the first 50 of each epoch overlaps the final 50 of the previous epoch After the interval 1s divided into epochs separate calculations are performed for each channel 4 For each EEG epoch polynomial trend parameters are computed and the trend is compensated The order of the polynomial trend 15 set by means of the corresponding parameter and can be chosen from 0 to 5 If zero trend order is chosen only the constant DC component is eliminated 5 To suppress energy infiltration through filter side lobes each epoch is smoothed by a time window Bartlett Hanning and Welch time window types can be selected If a rectangular time window 15 used then energy infiltration through side lobes would not be suppressed and in this case there would be no sense in using half overlapping analysis epochs 6 The power spectrum is computed by means of quick Fourier transformation 7 For the frequency interval set by the Low Frequency Bandrange parameter signal power 15 calculated and compared with the Maximal Low Frequency Signal Power parameter value If the power calculated exceeds that set by the last parameter then the EEG epoch 15 treated as an artifact To cancel artifact elimination select zero 0 25 Hz limits of Low Frequency Signal Range parameter Note that an EEG epoch 15 treated as artifact 1f low frequency signal power exceeds the limit value for any of the channels 8 Finally t
217. ns 1 EEG Monitoring During monitoring EEG and ECG signals are acquired in digital form by the computer through amplifier block and displayed on the monitor screen as curves graphs simulating those made by a plotter on moving paper WinEEG software includes graphic tools allowing the display of paper speed mm sec and sensitivity mV cm with 10 accuracy A user can initiate stop and resume writing EEG signals on the hard disk to save them for future analysis Total record duration 15 limited only by available disk space A video signal from a camera connected to the computer can be recorded synchronously with EEG The best results will be if analog or digital camera connected to corresponding video capture card 1s used I this case video signal 1s compressed on line that decrease required disk space and increase possible total recording time The night video EEG monitoring can be performed if video camera with infrared illuminant is used Video capture can be continuous or can be turned on and turned off manually many times The video EEG can be played back in moving paper emulation mode User interface provides a fast access to any part of EEG and video record Video signal can be recompressed off line Any selected part of video signal can be deleted to decrease total space Any selected part of EEG and corresponding video signal can be copied to another small file to prepare the data for writing to CD A free distributed video EEG viewer 1s
218. nsitivity vertical scale Increase sensitivity vertical scale Decrease speed horizontal scale Increase speed horizontal scale Modify montage Click arrow to open montage list Turn bandpass filter on or off Click arrow to open filter list Open or activate final report window for the active program file Open map window Calculate EEG indices Calculate EEG spectra Correct electrooculogram EOG Correct EEG artifacts or restore last correction Mark EEG artifacts automatically Calculate ERPs Calculate ERD Calculate ERCoh Perform wavelet ERP analysis Calculate wavelet coherence Insert patient card into final report text Insert a final report template Cascade windows Tile windows horizontally Tile windows vertically Get context sensitive help on a WinEEG control 78 19 Input Control Toolbar This toolbar is usually placed in the top of the WinEEG window under the main toolbar but can positioned differently and is used to control EEG acquisition and to scroll EEG window To show or to hide the Input Control toolbar use View Toolbar Input Control Toolbar command To arrange buttons in the Input Control toolbar use View Toolbar Customize Input Control Toolbar command You can also move or delete buttons by dragging them when holding the Shift key pressed Click To Start EEG acquisition and monitoring without recording to hard disk Start EEG fragment recording to hard disk Click arrow
219. ntaining punctuation signs dots commas colons etc Any menu must have an identifier that will be used to program calls of this menu Menu Header Text 15 an arbitrary text not exceeding 60 characters enclosed into double quotation marks Menu header is not mandatory according to the notation convention otructure of an Option Description n rv lt Name gt lt Text gt goblock Block Identifier gt lt Transfer where Name is a wording name indicated in the wording list window It is an arbitrary text in double quotation marks not exceeding 50 characters Text 1s the wording text to be inserted into final report It is an arbitrary text in double quotation marks Special characters can also be used new line line feed double quotation marks apostrophe V backslash goblock lt Block Identifier gt call of a block to be processed lt Transfer gt control transfer command There are four control transfer commands next goes to next menu default break finishes block processing quit stops the whole hierarchical menu processing system functioning go lt Menu Identifier gt starts processing the menu with the corresponding identifier There are several limitations for programming block calls and menu transfers Only a block can be called that is described the text below the block currently processed A menu can call another menu only within a block and the menu to be called sh
220. nter patient s sex M F Address Enter patient s address Note Enter other useful info patient s insurance policy number for example 169 the fields of patient card are not mandatory but can be useful when searching database Remember that all patient info would be automatically added to the final report 36 Fragments List dialog Fragments list visual CPT 10 48 50 Cancel Delete Choose a fragment and press OK or double click the fragment name Click Delete to delete selected fragment from EEG file 39 Deleting of selected EEG fragment Deleting of selected EEG fragment X Delete only video record for selected EEG fragment Length of selected EEG fragment sec 10 43 Warming This operation will remove EEG data permanently Are you realy want to continue processing 0 100 Cancel Select what kind of data are you going to delete and press OK button 170 40 Deleting of video data video data deleting X Tipe of the data C From main and additional cameras From main camera only From additional camera only Attention Video data will be deleted permamently IF agree press button Cancel Select what kind of data are you going to delete and press OK button 41 Modify Trial Labels dialog Trial list is there on the left of the dialog Select trials to edit labels for Click a trial to select it Use Shift and Ctrl keys to s
221. ny application WinWord Paint Etc window by means of Edit gt Paste command Use the File gt Save command to save newly calculated ERPs in the database Click right mouse button to show the popup menu If the cursor 15 placed on a graph then Add Map Add Label Copy Parameter Distribution Copy Channel and Copy Channel to Report commands will be available the popup menu Use the Add Map command to add a map in the Formatted Page window mode Use Add Label command to add peak labels on the active group ERP curve Use Copy Parameter Distribution to place a string of voltages into clipboard for selected active group ERP curve and time sample Subject Name T4 Av 146 92530 00 005 90202 Dd 0 lub cod Za 204203 CANON s 5120212 11 2000 OZ Stee cO VL Use Copy Channel and Copy Channel to Report commands to place selected channel and the active group waveform into clipboard or final report 75 150 0 9 150 0 ARE 0 072 1 00000 ThA The map and dipole localization picture will added for selected time sample 1f monopolar montage was used 76 WinEEG Bars 18 Main Toolbar The main toolbar is placed in the top of the WinEEG window under the menu bar It enables quick initiation of many WinEEG commands by simple mouse clicks To show or to hide the main toolbar use View Toolbar gt Main Toolbar command To change t
222. olbar command To modify button set or to change order of buttons in the Input Control toolbar use View Toolbar Customize Analysis Toolbar command You can also move or delete buttons by dragging them when holding the Shift key pressed Q Display spectra or indices as graphs Graphs mode Display spectra or indices as histograms Histograms mode List spectra or indices parameters in a table Table mode Display spectra or indices as maps Maps mode Map asymmetry for spectra or indices Asymmetry mode Map ratio for spectra or indices Formula Mapping mode Display interaction diagrams Interaction diagrams mode Display ratio dynamics for spectra as graphs Formula Graphs mode Display power spectra or their parameters in spectra window Display EEG coherence or its parameters for each channel in spectra window Display average EEG coherence or its parameters in spectra window Display phase spectra or their parameters in spectra window Display average spectra in spectra window Display spectra dynamics in spectra window Switch ERP window to Channels Groups mode Switch ERP window to Groups Channels mode Switch ERP window to Time Groups Mapping mode Switch ERP window to Groups Time Mapping mode Switch ERP window to Formatted Page mode Display average bandpower for wavelet ERP analysis Display rasters Time Frequency for wavelet ERP analysis BEE E EJ 8 E E ES E I
223. on describes the algorithm of power spectral computation We assume you are already acquainted with theoretical basis of spectral analysis If not you can find complete information in the book by J Bendat A Pirsol Random data Analysis and measurement 28 procedure John Wiley and Sons 1986 540 pp As for the practical use of EEG spectral analysis in the diagnosis of diseases you can read specialized journals such as Electroencephalography and Clinical Neurophysiology We would like to note that WinEEG can compute and analyze spectral power dynamics as well as averaged power spectra and coherence functions for a selected epoch We will briefly describe the features of power spectral calculation algorithms implemented in WinEEG Suppose that we process a single interval of an EEG record 1 First of all the source EEG record interval is reformatted and filtered according to the active montage parameters 1 e the montage currently selected by the user 2 Channels not included in the list of channels to process are excluded from the reformatted and filtered multichannel record 3 The entire record interval is divided into equal parts epochs The length of an epoch is defined by adjusting the Epoch Length parameter the menu displayed by Analysis gt gt Spectra Epoch Length may be set equal to 1 2 or 4 sec Overlapping of the epochs 15 also set as a parameter when dividing the record interval epochs If Overlappi
224. oolbar gt Maps Bar command Run this command to show or to hide Maps bar which presents data display options for the active EEG mapping window See Maps Spectra Indices Bar to learn how to use it 47 View Toolbar gt Spectra Bar command Run this command to show or to hide Spectra bar which presents data display options for the active EEG spectra window See Maps Spectra Indices Bar to learn how to use it 48 View Toolbar Indices Bar command Run this command to show or to hide Indices bar which presents data display options for the active EEG indices window See Maps Spectra Indices Bar to learn how to use it 49 View Toolbar gt ERP Bar command Run this command to show or to hide ERP bar which presents data display options for the active ERP window See ERP Bar to learn how to use it 50 View Toolbar gt Biofeedback Bar command Run this command to show or to hide Biofeedback bar containing controls for a number of additional parameters affecting EEG acquisition and processing during biofeedback sessions See Biofeedback Bar to learn how to use it 51 View Toolbar gt Calculator Bar command Run this command to show or to hide Calculator bar in a spectra window or an indices window used to define processing for the Formula mode See Calculator Bar to learn how to use it 52 View Toolbar gt Averaging Groups Bar command Run this command to show or to hide Averaging Groups bar in an ER
225. op up menu of EEG window Copy Spike to Report command eese eene nnne enses 115 SOONE a 116 CONME 116 116 Lable CONANA 116 116 A SYES COMAN 116 120 Analysis FOrmula M Gppin eme dum deme P M EIS 117 T2 Analysis Formula Graphs COMMON uo eur ie tod ini tetto ind 117 122 Analysis Interaction diapram command sss vo ini e Eod eas 117 123 ANALYSIS DOWOFSDOGU CORR entes two bna eee 117 124 Analysis Coherence for Channels command oes cesi 117 125 ANALYSIS AV
226. ore to it the voltage data corresponding to position of vertical markers Runs LORETA application and store to it the EEG power covariance matrix computing for selected time interval Run BrainLock program optional Run utilities for nonlinear analysis of EEG optional Start automated spike detection procedure Calculate averaged spike waveforms and open ERP window Corrects electrooculogram artifacts caused by eye movements from the record Marks EEG artifacts Corrects EEG artifacts Turn on off band pass filter defined by Setup EEG bandranges command Computes event related potentials Computes event related EEG desynchronization Computes event related EEG coherence Performs wavelet ERP analysis Compute Wavelet coherence Compare spectra ERP or ERD For pop up menu of EEG window Add spike label for selected channel and time sample Delete selected spike label Change main channel for selected spike label Copy Spike Copy EEG to Report Copy Spike to Report Smoothing Average Spectra Spectra Dynamics Graphs Histograms Table Maps Asymmetry Formula Mapping Formula Graphs Interaction diagram Power Spectra Coherence for Channels Average Coherence Phase Spectra Parameters of interaction diagrams Insert tables into Report Add map Channels Groups Groups Channels Time Groups Mapping Groups Time Mapping Formatted Page Average Bandpower Rasters Time Frequency
227. ower graphs for wavelet ERP analysis in an ERP window Shortcut Analysis toolbar 138 Analysis Rasters Time Frequency command Displays time frequency rasters for wavelet ERP analysis in an ERP window Shortcut Analysis toolbar 139 Analysis Channel List command Selects channel list for displaying graphs and maps in the ERP window 120 select List of Channels dialog 1s displayed after calling this command 140 Analysis Group Info command Displays statistical results of ERP averaging and response reaction analysis Use this command also to edit trial group names Results of Averaging and Subject Response Processing dialog 15 displayed after calling this command I4I Pop up menu of ERP window Add Map command Adds a map in ERP window The map 15 added for active trial group see Averaging Groups Bar and for the time readout bin marked on the ERP graph by the by cursor position when holding the right mouse button pressed 142 Pop up menu of ERP window Add Label command Adds a peak label on a graph in an ERP window Peak label 15 added for active trial group see Averaging Groups Bar and for time readout bin marked on the ERP graph by the by cursor position when holding the right mouse button pressed Before the first call of the LORETA application the WinEEG program ask for a location of LORETA EXE file It s usual location is folder with name LORETA 020 MAIN 143 Po
228. p potential values spectral parameters and ets using 2 D spherical splines or 3 D LORETA methods 8 Source dipole localization 9 Event related potentials 10 Event related EEG desynchronization 11 Event related EEG coherence 12 Event related wavelet analysis 13 Exporting the data to ASCII file for analysis by another statistical packages 14 Computing of grand average EEG spectra grand average EEG coherence grand average ERP grand average ERD for selected set of observation 15 Comparison of EEG spectra EEG coherence ERP and ERD for different subjects groups of subjects or condition with the simplest estimation of statistical significance of differences 16 Batch data processing It helps to compute a lot of different spectra ERP and ERD automatically 17 Comparison of EEG spectra EEG coherence and ERP with normative child 7 16 years old database 5 Composing a Final Report To create a final report WinEEG has a built in window text editor with standard text functions including block operations The patient card 1s automatically added to the report There 15 also a help menu enabling automatic inclusion of standard formulations in the text 6 Printing EEG Fragments Processing Results and Report Text WinEEG enables high quality graphic printing of EEG signals and processing results on many of the most popular color or black and white printers When printing EEG signals absolute horizontal and vertica
229. p up menu of ERP window Copy Parameter Distribution command Copy string of voltages of active ERP group for selected time sample into clipboard 144 Pop up menu of ERP window Copy Channel command Copy channel s waveform map and dipole picture for active ERP group into clipboard The map and dipole picture will correspond to selected by mouse pointer time sample 145 Pop up menu of ERP window Copy Channel to Report command Copy channel s waveform map and dipole picture for active ERP group into text of final report The map and dipole picture will correspond to selected by mouse pointer time sample 146 Pop up menu of ERP window Source distribution LORETA command Run this command to call LORETA application and store to it the voltage data corresponding to selected time point of ERP data A time readout bit may be pointed to on a ERP graph by cursor position when holding the right mouse button pressed 147 Pop up menu of ERP window Delete All Labels command Run this command to clear all pick labels 148 Pop up menu of ERP window Delete Labels and Maps command Run this command to clear all pick labels and maps 121 149 Analysis Insert Patient Card command Inserts patient card into final report text Shortcut Main toolbar E 150 Analysis Generate Final Report command Activates final report generation procedure Only Russian version available 151 Analysis Insert Final Report Templat
230. ponents X Select the components you want install clear the components unu da nat want to install Components EDI 3K ef POs K Space Hequired 390256 Space Available 2096932 lt Back Hest gt Cancel Select components you want to install Don t install Sounds component if you don t plan to use auditory biofeedback Don t install Child Database component if you will not use Normative Database including spectra and ERP for children with the age from 7 to 16 years Press Next button to continue installation 17 Select Program Folder X Setup will add program icons to the Program Folder listed below Y ou may type a new folder name select one fram the existing Folders list Click Nest to continue Program Folders Administrative Tools Broderbund Software Brother HL 1230 Buka Bukashka Creative Games Games_Gosha lt Back Cancel Type new folder name if you want Press Next button to continue installation Setup Complete Setup has finished installing WinEEG an your computer Setup can launch the Read file and WinEEG Choose the options You want below Click Finish to complete Setup Press Finish button to complete Setup After finishing of Setup you need to run WinEEG program and set correctly the I O port and the synchronization port using Setup Equipment parameters command If you plan
231. ps ERPs are depicted as graphs and topograms Graphs are placed according to selected format parameters see Setup gt Graph Formats command Topograms are placed below graphs Displays average bandpower graphs for wavelet ERP analysis Displays time frequency rasters for wavelet ERP analysis Use the Scale list in the ERP bar or and keys to change color scale sensitivity or Y axis scale for graphs Choose graph or topogram size from the Size list in the ERP bar 74 Use Active groups fields the ERP bar to set start and end time of the interval to be depicted by ERP graphs Use Maps group fields in the ERP bar to set start and end time of the interval to be mapped and also to define degree of ERP compression If the Step parameter value exceeds quantizing interval then time averaged ERPs will be mapped Use Baseline group fields in the ERP bar to modify interval for baseline calculation Use Active Groups group fields the Averaging group bar to choose groups to be displayed and to select an active group Use Averaging bandrange group fields in the Averaging group bar to set bandrange for displaying average bandpower graphs for wavelet ERP analysis Use Setup gt Mapping Style command to change color scale palette and map appearance Use Edit gt Copy command to copy graphs or maps visible in the window to the clipboard They can then be pasted into final report text or into a
232. r Select appropriate paper Size and Source Orientation Select page orientation Portrait or Landscape Margins Set margin size millimeters Printer Use the Printer command to choose a printer and to set its options 29 Print Setup dialog The following options allow you to select the destination printer and its connection 163 Print Setup Printer Brother HL 1230 series tt Properties Status Default printer Ready Type Brother 1230 series Where Comment Orientation Faper SIZE 210 297 mm C Portrait Landscape 5nurce Auto Select Printer Select the printer you want to use Properties Set additional printer options Paper Select appropriate paper Size and Source Orientation Select page orientation Portrait or Landscape 30 Stimuli Presentation Program List dialog Use this dialog to choose a stimuli presentation protocol program for stimuli presentation in ERP investigations or to modify the list of stimuli presentation programs After a program is chosen EEG acquisition starts with simultaneous stimuli presentation on an additional computer ERPs can be calculated for this EEG file during further processing To learn more about ERP see Event Related Potentials section 164 Stimuli presentation program list Cancel Heread Update recording Press the
233. r is used for stimuli presentation Both computers should be connected by null modem cable Equipment preparation for performing ERP studies The preparation of computers for ERP studies will be describe below only for using the PSYTASK program for the stimuli presentation The information concerning preparation of computers for using other presentation software can be found in corresponding user manuals 1 Preparation of stimuli presentation computer 31 This chapter describe preparation of computer for PSYTASK for DOS Skip this chapter if you use PSYTASK for Windows XP 1 Turn off both computers and connect then by null modem cable 2 Install sound card into computer for stimuli presentation 3 Turn on the computer for stimuli presentation and install DOS drivers for sound card 4 Check the work of sound card by special utility for example DIAGNOSE EXE 5 Remember the parameters of sound card Base address default 220h IRQ default 5 DMA 8 bit default 1 and DMA 16 bit default 5 6 Load MS DOS For Windows 98 this will be Command prompt only mode 7 Check free memory by MEM utility PSYTASK program requires at least 550 Kb free memory for a largest executable file and at least 2 Mb extended memory Modify CONFUG SYS and AUTOEXEC BAT file to exclude unusable drivers if it is necessary Don t forget please to load HIMEM SYS driver A Attention Not all sound cards are compatible with PSYTASK program So
234. ransformation weight matrix from the list or define your own To define a transformation matrix press Modify transformation matrix button The Transformation Matrix for Weighted Average Referent dialog will appear 4 Montage Parameters Colors dialog Use the Colors tab of the Montage Parameters dialog to define colors for depicting channels You can also choose a montage from the montage list see Setup Montage List command Montage Name This field initially contains the name of default montage from the montage list Use down arrow button to select a different montage from the list for use as a new default You can also rename the selected montage Channel List The table of channels in the montage 1s placed on the left side Each row corresponds to a channel in the montage don t confuse them with the channels in the acquisition list The montage channel list includes channels that will be displayed during the monitoring and processed Columns correspond to channel parameters for more info see Montage List Channels dialog 133 To change colors for the selected channels how to select channels see Montage Settings Channels dialog click one of the color buttons located to the right of the channels table Montage parameters 4 E X Fatient Card Referents Colors Electrodes Lowtut HighCut Notch Baseline Montage name 1 1
235. rd Only Check to find only whole words matching the Find What string Match Case Extends search criteria to include uppercase and lowercase attributes while searching for the Find What string in the text Find Next Find next string matching the Find What one Replace Replaces the string found and resumes searching 168 Replace Finds and replaces all strings that match the Find What string 37 Patient Card dialog Fill or edit the patient card Patient Card 1 Date 08 02 2001 Time Investigation Ea Patient M ame Fatient ID o O OE Diagnosis 00 04 Date of birth 1974 Sex Address Ea OSOS Note 7 Cancel ID EEG record ID 15 an arbitrary sequence up to 10 characters which simplifies searching the database Date The date of EEG acquisition start is entered automatically Use DD MM Y Y Y Y date format for successful database search by date Time The date of EEG acquisition start is entered automatically Use HH MM SS time format for successful database search by time Investigation Select investigation type from list 1 EEG observation 2 Biofeedback Patient Enter patient s name Patient ID Enter patient s card number Diagnosis Enter a brief disease diagnosis The final report may contain more detailed description Date of birth Enter the date of patient s birth Use DD MM YYYY date format for successful database search Sex E
236. re are control buttons Open button opens the data EEG file corresponding to the record selected in a new window The file can also be opened by double clicking the row in the record list The Record List dialog 1s then closed Note If you open an ERP database and select multiple records then the Average button appears instead of the Open button If you press the Average button ERPs or EEG spectra that have been averaged over all selected records will be calculated and then a new ERP window or a new EEG Spectra window will be opened If a raw EEG database 1s opened then on pressing Average button a Batch EEG processing dialog appears allowing the calculation of ERP ERD ERCoh or wavelet decomposition for several investigations simultaneously Cancel button closes the Record List dialog without opening any data file Export button calls the function of ERP ERD export or spectra export It can be useful for exporting processing results of several investigations to one ASCII file for further statistical analysis Find calls automatic record search function A Base Record Search Parameters dialog will then be opened Add button calls the function that adds a data file to the database A file 15 added to the database two cases First 1f it is necessary to add a file to the database that has not yet been recorded This may happen after an investigation if data was saved by Save As command or if the file of course with a compatib
237. rinting EEG indices Paper orientation for ERP ERD window Choose paper orientation for printing ERP ERD and ERCoh Paper orientation for biofeedback window Choose paper orientation for printing biofeedback window contents Preferences EEG input EEG window Scale Printing Paper orientation Far EEG window Printing Default Portrait Landscape 72 Paper onentation for EEG mapping window Calibration C Default Portrait f Landscape C Using memory buffer Paper onentation for spectra window Calibration style t Default Portrait Landscape Value only Paper orientation for indeces window t Values and vertical bar C Default Portrait f Landscape f Values and calibration signal Paper onentation for EER ERO window C Default Portrait Landscape Paper onentation For biofeedback window C Default f Portrait C Landscape Cancel Help Printing Check options for graphic elements to be printed together with EEG Channel names Check this to print channel names on the left of each page 220 Calibration Check this to print conventional calibration signals showing gains and bandwidths for EEG channels If this option 15 checked calibration will be printed on the last page increasing selected interval by 60 mm Calibration style Choose an option defining how to print calibration 80 Colors dialog Colors To choose a color click the corresponding button 81 Mappin
238. rk to place the new file in 149 19 Export ERP ERD dialog ERP ERD export is used for saving data in a text file readable by other applications Export ERP ERD 1 16 9 91 15 91 6 6 Add Delete Select all Select all Unselect all Unselect all Fle fo Append ta the end of file Cancel Channels Select the channels you wish to export ERP from Use Add Delete Select and Deselect buttons Groups Select the trial groups for which you wish to export ERP To select or to unselect all groups quickly use Select and Deselect buttons Data Data w aveforms C Performance data Time Interval From Begining of Tri From ma 0 Step 8 4 Baseline correction left from Hone Lenght ma 50 Format t Channels in line Time samples in file Groupe in line nanes Add column names Choose what data to export Waveforms themselves or Performance Data table Time Interval set the time interval you wish to export data for The following interval parameters need to be set From sets the starting point You can start at the very beginning of the trial or at the moment when one of the stimuli is presented From ms sets the beginning of the interval to export in relation to the starting point
239. rocessed before exporting according to the montage parameters bandpass filtering and artifacts correction procedures 4 Universal Data Format UDF an extension of EDF data format 5 LEXICOR data format The WinEEG program is able to export EEG spectra EEG coherence ERP and ERD to ASCII data format for the further processing of these data by STATISTICA or similar programs for more advanced statistical analysis The WinEEG program supports the next data formats for import raw EEG data recorded by another equipment 1 ASCII data format The columns of resulting data file correspond to montage channels and rows to time samples 2 European Data Format EDF that supported by software developed by another companies 3 Universal Data Format UDF an extension of EDF data format 4 NeuroScan CNT data format 5 NeuroScan EEG data format Grand averaging and Batch data processin The WinEEG program can compute grand average EEG spectra grand average EEG coherence grand average ERP grand average ERD for selected set of observation To perform grand averaging open corresponding database select subset of records and press button Average means the montage and processing parameters should be the same for all averaging spectra ERPs or ERDs Attention The compatible data only can be used for grand average computation This The WinEEG program can perform batch data processing It helps to compute a lot of
240. rocessing Attention EEG reformatted to a bipolar montage cannot be mapped If you wish to view ERCoh maps choose a monopolar montage for the active EEG window before calling this command Electrode coordinates are additional parameters for maps see Montage parameters Electrodes dialog Incorrect coordinate settings can disable mapping Shortcut Main toolbar 104 Analysis Compute Wavelet command Performs wavelet ERP analysis for the active EEG file and opens an ERP window Wavelet power can be calculated only if presentation of visual auditory stimuli was carried out synchronously with EEG acquisition After calling this command one of the Wavelet Decomposition dialogs is displayed to define additional processing parameters Raw data 1s reformatted according to montage parameters before processing Attention EEG reformatted to a bipolar montage cannot be mapped If you wish to view maps choose a monopolar montage for the active EEG window before calling this command Electrode coordinates are additional parameters for maps see Montage parameters Electrodes dialog Incorrect coordinate settings can disable mapping Shortcut Main toolbar 115 105 Analysis Compute Wavelet command Compute wavelet coherence for the active EEG file and opens an ERP window Wavelet coherence can be calculated only if presentation of visual auditory stimuli was carried out synchronously with EEG acquisit
241. rst maximum minimum of crosscorelation function anr corresponding lag are listed in the table Maps Total signal power for given EEG bandranges is shown on maps For the Spectral Dynamics mode power is mapped separately for each epoch Disabled for auto and crosscorrelation Asymmetry Total signal power asymmetry for given EEG bandranges is shown on maps For the Spectral Dynamics mode asymmetry is mapped separately 66 for each epoch Disabled for auto and crosscorrelation Formula A map depicting the ratio of signal powers for two given EEG bandranges Mapping The ratio formula 15 defined by means of the Calculator bar For the Spectral Dynamics mode multiple maps are displayed Disabled for auto and crosscorrelation Formula Signal power ratio dynamics for two given EEG bandranges Disabled for Graphs auto and crosscorrelation Interaction The EEG coherence and crosscorrelation can be presented by so called diagram interaction diograms For EEG coherence electrodes will be connected by curves with different thickness and colors in dependence of value of average coherence For EEG crosscorrelation electrodes will be connected by curves with different thickness and colors dependence of value first maximum extremum of crosscorrelation function FAEO01760 5PC Grand Average File Fill b Mone Size Betal ie Beta P 3 amma iz Normalization From Ta 64 0 Hz M Statictics Channel
242. ry command Maps assymetries in the distribution of spectral parameters for standard EEG bandranges for each channel in an EEG indices window or in an EEG spectra window Attention Maps cannot be viewed if the source EEG was reformatted to a bipolar montage before processing Shortcut Analysis toolbar 117 120 Analysis Formula Mapping command Maps ratio of two spectral parameters for standard EEG bandranges in an EEG indices window or in an EEG spectra window Ratio formula is defined by means of Calculator bar Attention Maps cannot be viewed if the source EEG was reformatted to a bipolar montage before processing Shortcut Analysis toolbar 121 Analysis Formula Graphs command Plots dynamics of the ratio of two spectral parameters for standard EEG bandranges as graphs in an EEG spectra window Ratio formula is defined by means of Calculator bar Shortcut Analysis toolbar ES 122 Analysis Interaction diagram command Displays interaction diagrams in an EEG spectra window Shortcut Analysis toolbar e 123 Analysis Power Spectra command Displays EEG power spectra an EEG spectra window Shortcut Analysis toolbar 124 Analysis Coherence for Channels command Displays EEG coherence for a selected channel in an EEG spectra window Shortcut Analysis toolbar Py 125 Analysis Average Coherence command Displays EEG coherence averaged
243. s corresponding to different stages of the session Use buttons of the Window Mode group to switch between EEG acquisition dynamics control mode Waveforms and working mode Bar modes 2 and 3 see Biofeedback Window Use buttons controls in the Sensitivity controls group to set biofeedback parameter sensitivity The Middle list sets the parameter value the patient should try to reach during training The Minimum list sets a minimal threshold value which the biofeedback parameter usually exceeds The Refresh list defines the time interval between updates to the biofeedback parameter value The Smoothing list defines the data smoothing order The Artifacts list sets the threshold value for the low frequency bandrange first EEG band signal power If power within an EEG time interval exceeds the threshold that time interval is eliminated as artifact The parameter value does not change For biofeedback parameter dynamics analysis mode mode 1 see Biofeedback Window Value and Time fields are also used When you press the left mouse button they display biofeedback parameter value and time sec between the start of training start and the current cursor position See Calculator Bar description section 11 below 28 Maps Spectra Indices Bars 9 0 100 Normalization From 0 00 Hz m Hz gt S Latictics Hone E Channel Fpl Avw ZEE NI PE 29 C
244. s transients take 1 2 sec to reach a new equilibrium 33 Calibration Of Amplifiers dialog WinEEG user is only able to view calibration parameters not to change them D Attention Amplifiers are calibrated by manufacturer before metrological certification The following fields allow viewing the table of correction parameters Parameters Choose what parameter set to view Parameters Table Table of gains and offsets 1s placed under Parameters list 166 Calibration of Amplifiers Parameters Coefficients for high sensitivity of amplifiers ain zem zem Gain ZeD Fpl 7407 1365 1233 Pgz nes n 0 7299 1259 07233 fo 0 7352 1289 15 0 7407 fo l ra CTI 10 7407 4 Lal L mn L Tl M 4 Jm 1 L L NN D Co Th I r4 L NN NN ra EN I i cL cL I NN T1 of oy oF m Jm c i j a a Li 1 ra ceo EN T cL LT CI Co c TI T c Th ra ey EN Co Co my cm tal ra r3 CTI Go l I c c c T1 1 c LI 1 ra LT T
245. s ERP maps arranging time intervals in columns and averaging groups in rows Displays ERP maps arranging time intervals in rows and averaging groups in columns Displays ERP graphs according to ERP Display Format you have chosen Displays average EEG bandpower graphs for wavelet ERP analysis Displays Time Frequency rasters for wavelet ERP analysis selects channels to be displayed on graphs or maps Views the statistics for averaging of ERP and response reaction processing results For pop up menu of ERP Window Add Label Copy Parameter Distribution Copy Channel Copy Channel to Report Sources distribution LORETA Delete Labels Delete Labels and Maps Generate Final Report Insert Patient Card Insert Final ReportT emplate Setup Menu Commands 902 Adds an ERP map for selected active trial group Adds a peak label on the graph for selected active trial group Copy string of voltages of active ERP group for selected time sample into clipboard Copy channel waveform map and dipole picture for active ERP group into clipboard Copy channel waveform map and dipole picture for active ERP group into final report Runs LORETA application and store to it the voltage data corresponding to selected time point Clear all pick labels Clear all pick labels and maps For Final Report window Activates final report generation procedure Only Russian version available Inserts patient
246. shold If this parameters of EEG for given time interval 1s higher then threshold then this time interval is marked as artifact and eliminated from further processing Most power artifact detection and marking procedure 15 implemented in Analysis Mark Artifacts command This procedure makes three independent EEG signal parameters comparison with defined thresholds l A comparison of absolute voltage of EEG signal with the threshold 2 A comparison of amplitude of slow wave in defined frequency band with the threshold 3 A comparison of amplitude of fast wave in defined frequency band with the threshold This procedure can be performed many times independently 26 A comparison of absolute voltage of EEG signal with the threshold 15 included ERP ERD ERCoh and wavelet computation procedures A comparison of power of very slow waves in defined frequency band with the threshold 1s included EEG spectra computation artifact detection procedures are independent and can be used simultaneously EEG Indices The section describes the algorithm for analyzing EEG indices and its features We should note that the method of EEG index analyses implemented in this software 1s more a research method than a standard routine That is why we recommend using this method only if you realize quite clearly what parameters and algorithms are used and what they mean We define an EEG index as the percentage of time that EEG potential fluctua
247. sseund sBlackmoarez way wH sDistibswinE egssound sBlackmaore3 wav ow Distrib wink egssaundsD epPurple wav Down H 4DistibswinE egssoundsDepPFurplez wav egssaundsl Ween wav wIH SDistibSwVinE egssoundsrainbow way E uocant dual uic Audio control function Upper threshold 100 i 0 0 1 0 1 Cancel 0 5 231 Customizes auditory biofeedback You can define audio files to be played their order and the relationship of sound volume to the trained biofeedback parameter value Audio source Choose audio source Turn Off auditory biofeedback 1s off Audio CD Player MP3 Format sound is played from CD by means of standard CD player List Of Wave Files WAV sound is played from WAV files placed on hard disk and listed below List of wave files Check files to be played Use Up and Down buttons to modify file play order Press Update to update list Audio Control Function Use Lower Threshold and Upper Threshold sliders to define sound volume relationship to the trained biofeedback parameter value 93 Running Header dialog Enter for example your organization title to be printed as running header at the top of each page Hunning head caen 94 Final Report Template List dialog Creates and modifies final report template list Use the New button to add a new final report template to the list Final
248. ssing for each fragment time interval option is chosen Calculate Statistical Significance check this option to calculate statistical significance of ERP difference from baseline separately for each ERP or differential ERP and for each bin or for each pair of bins taken to calculate differential signal The Student criterion 1s used to estimate statistical significance 188 57 Parameters for Event Related Potential Computation dialog To calculate ERPs additional information on stimuli presentation structure in each trial 15 used together with source data To group trials by stimuli types or by response task trial labels are used These parameters are defined beforehand when creating editing stimuli presentation protocols by means of PSYTASK program installed on the presenting computer Groups Of Trials The table defines context names for trial groups Name fields and corresponding trial label lists Labels fields Up to 8 different trial groups can be defined For each trial group a label list 15 defined label values in the list are separated by commas 1 2 5 9 Same trial label value may be used in several different trial groups For groups with empty label lists ERP would not be calculated On the right side of the table there are fields for displaying statistical results of trial grouping artifact analysis and response processing The Correct fields show number of trials in each group when the patient performed the task corr
249. st of channel pairs O Kl K Fp1 Ref Fp2 Ref Fo1 Ref F Ref Fol Ref F3 Ref Fol Ret Fz Ref Fp1 Ref F 4 Ref Fp1 Ref F8 Ref Fp1 Ref T3 Ref _ Fp1 Ref C3 Ref Fp1 Ref Cz Ref Fp1 Ref C4 Ref Fp1 Ref T 4 Ref L Fp1 Ref T5 Ref Fp1 Ref P3 Ref _ Fp1 Ref Pz2 Ref _ Fp1 Ret P4 Ret Fp1 Ret T6 Ref Fp1 Ref O1 Ref _ Fp1 Ret 02 Ref Fp1 BefECG Fpl RefFpz Oz Fo2 Ret F Ref Wavelet width 5 cycles Substract ERP from raw EEG Smoothing None Fp2 Ref F3 Ref Use as default 100 Load Save Cancel This dialog box works similar as described in previous chapter But user should also specify a list of channel pairs to which wavelet coherence should be compute 62 Choose Group Differences dialog Defines trial group pairs for calculating differential ERPs Choose group differences 196 EHP 2 EHP 15 EHP 3 EHP 15 EHF 4 EHF 15 lt 7 gt lt ERP 15 EHP 8 F as Select all Unselect all El Cancel Press Select All button to choose all group pairs Press Deselect All button to deselect all group pairs Attention Total number of trial groups trial group pairs may not exceed 32 Therefore if there are for example 8 context groups then not more than 24 trial group pairs can be selected 197
250. t by means of the Setup EEG Bandranges command The disadvantage of these filters 1s that they take a long time for calculations so they are not used for real time EEG acquisition Electrooculographic artifacts correction The method of electrooculographic artifacts correction based on linear regression method in the time domain It 15 very helpful if there are many artifacts related eyes blinks To use this method an additional signal electrooculogramm should be recorded The electrooculogram EOG is recorded using two additional electrodes placed higher and below eye and connected to additional EEG channels for example Fpz and Oz sockets In this case a montage should include one additional bipolar channel Fpz Oz During the processing WinEEG program using threshold criteria will automatically detect time intervals in which eye blinks were observed Using this data WinEEG program calculates coefficient of influence of EOG for each EEG channel separately Finally WinEEG program subtracts EOG signal multiplied in corresponding coefficient from EEG signal This correction procedure can be performed using Analysis Remove EOG command recording The EOG and EEG signals should be recorded using the same frequency bands Because additional artifacts can influence on quality of correction of eye blink artifacts the visual inspection of its result should be done 1 Attention The quality of work of this correction procedure depends on qualit
251. t editor and containing information on future structure of interactive menus When menus are created the text 1s compiled by a special compiler FRC EXE that generates a resource file used by the automatic final report generation system The resource file name 15 mandatory EEGFR RES The compiler analyses menu syntax If an error occurs compiling process breaks and an error messages 15 generated containing the source line number and a brief error description If no errors are detected a message about successful compilation is displayed and a corresponding resource file is created Command line syntax to call the compiler FRC EXE ACSII file name resource file name gt I Basic Terms Basic terms used in the programming language Menu is a basic automatic final report resource unit A menu 1s a list of wordings united into an entire group and showed in a window simultaneously A menu can have an additional attribute so called menu header This 1s an arbitrary text shown in the top of automatic final report generation window when the corresponding menu 15 displayed Menu description contains a list of options option contains a wording to be shown and selected in the window text to be inserted into final report on selecting the option and a set of commands organizing menu display sequence All menus described in the system must be organized in menu blocks menu block 1s a set of separate menu descriptions enclosed in b
252. ta 1s processed according to montage parameters Attention EEG reformatted to a bipolar montage cannot be mapped If you wish to view maps of indices choose a monopolar montage for the active EEG window before calling this command Electrode coordinates are additional parameters for maps see Montage parameters Electrodes dialog Incorrect coordinate settings can disable mapping Shortcut Main Toolbar 88 Analysis EEG Spectra command Calculates EEG power spectra for a selected EEG interval and opens an EEG Spectra window for the active EEG file You can open several spectra windows for one active EEG file but for different intervals Use vertical markers in the EEG window to mark an interval of interest An interval for processing must not be shorter than 1 sec After calling this command the Parameters of EEG Spectra Computation dialog is opened to set additional processing parameters Raw data 1s processed according to montage parameter Attention EEG reformatted to a bipolar montage cannot be mapped If you wish to view spectral maps choose a monopolar montage for the active EEG window before calling this command 111 Electrode coordinates are additional parameters for maps see Montage parameters Electrodes dialog Incorrect coordinate settings can disable mapping Shortcut Main Toolbar 89 Analysis EEG Crosscorrelation command Calculates EEG auto and crosscorrelation for a selected EEG in
253. table displays parameters for one graph position in relation to upper left page corner horizontal and vertical size and list of depicted curves One graph can depict up to four 228 curves corresponding to different trial groups for only one channel Besides under the graph there can be histograms for each of four trial groups encoding results of ERP statistical analysis see ERP window For example if Curves List field contains the following Gr14St lt Gr2 lt Gr3 lt Gr4 gt the graph will depict ERPs for F3 channel and for four trial groups named by means of Averaging Groups bar Also a histogram of statistical significance for the first trial group will be shown under the graph Graphs will not be displayed for channels or trial groups absent in the opened ERP file Check table rows for graphs to be depicted the ERP window or highlight a row rows to modify parameters for Press Change button to set new parameters for displaying graphs checked in the table The Parameters Of Graphics dialog 1s displayed after calling this command Press Copy From button to copy parameters from another format selected from list The Page Size dialog is displayed after pressing this button 88 Page Size dialog Page size Width mm AQ Height mrn zl Cancel Enter page width and height 229 89 Line Style dialog Line style
254. te can be changed according Lexicor the setting of field Sampling Rate data files File Defines full path of the destination file for exporting data to Use the on the right of the name field to choose a drive and a folder 155 22 Export EEG Spectra dialog EEG spectra export is used for saving data in a file readable by other applications Channels select the channels you wish to export ERP for Use Add Delete Select and Deselect buttons x Channel Spectra Raw EEG spectra EEG power for defined bandranges Bandrange list Defaut Values Power Amplitude Percentage X Coherence and Phaze Coherence Phase Bandranges in row Delete Include row names Hele all Pulsa el Include column names File E Append to existing file Data Defines what data are to be exported in an ASCII file You can export either Raw EEG Spectra or table of EEG Power for Defined Bandranges Raw EEG spectra Writes raw EEG power spectra to an ASCII file Columns correspond to channels and rows to harmonics The first row presents the first harmonic with frequency depending on analysis epoch length 1 sec 1 Hz 2 sec 0 5 Hz 4 sec 0 25 Hz see Analysis EEG Spectra command The constant component is not written to the file EEG spectral power Writes the table of EEG spectral power parameters to an ASCII for the defined file Columns present channels and each pair of lin
255. terval and opens an EEG Spectra window Auto and Crosscorrelation for the active EEG file You can open several spectra windows for one active EEG file but for different intervals Use vertical markers the EEG window to mark an interval of interest An interval for processing must not be shorter than 1 sec After calling this command the Parameters of EEG Auto and Crosscorrelation Computation dialog 15 opened to set additional processing parameters Raw data 1s processed according to montage parameters 90 Analysis Spectra Density Array command Calculate and display hide spectra density arrays in EEG window for the whole EEG file 91 Analysis Source distribution LORETA command Run this command to call LORETA application and store to it the voltage data corresponding to position of vertical markers Before the first call of the LORETA application the WinEEG program ask for a location of LORETA EXE file It s usual location is folder with name LORETA 020 MAIN 92 Analysis Spectra power distribution LORETA command Run this command to call LORETA application and store to it the EEG power covariance matrix computing for selected time interval This command can be used together with Analysis Turn on off bandpass filter to estimate the distribution of sources for EEG signal the selected frequency band Before the first call of the LORETA application the WinEEG program ask for a location of LORETA
256. the text are deleted If the ID field in the search condition contains ABC then records containing ABC abc AbCXXxxXX xXxaBCXXx in their ID fields satisfy this condition Data base parameters Date bases of raw data Date bases of processing results Browser settings Base records search parameters 1 Date from EE In Time from to Investigation Patiend Fatiend ID Diagnosis Date of birth From to IEEE Address Mate Existed in the working folder Backuped Cancel Date From To fields define the interval of EEG acquisition dates current year for example To enable automatic search by date use DD MM Y Y Y Y date format Time From To fields define the interval of EEG acquisition times before noon for example To enable automatic search by time use HH MM SS time format Investigation field contains a text string to be presented in the corresponding field of the database record see also ID field Patient field contains a text string for example patient name to be presented in the corresponding field of the database record see also ID field Patient ID field contains a text string to be presented in the corresponding field of the database record see also ID field 215 Diagnosis field contains a text string to be presented in the corresponding field of the databas
257. tion 2 Dur ms 20 Dw2 lt Duration A Dur me 20 z Dura Duration B DurB ms 20 z DurB Amplitude uM 30 Amp Amplitude B AmpE uv 30 lt AmpB Amplitude 2 Amp uv 20 lt Ampe Slope 1 511 ums 1 lt Slope 2 512 uv ms lt Sl Sharpness 2 2 Dipole and spatial parameters Use dipole parameters Use relative resudal energy RRE lt 0 2 I Use dipole eccentrisity KEYZ pss Use SWD before dipole estimation Epoch duration for SD Use relative fraction of total energy of first component 0 3 Use of component Emas Sman sum S fh Eve blink artefart parameters Remove eve blinks Dipole lacattien coordinates gt 0 5 Dipole locattion 2 coordinates lt lo Dipole eccentrisity gt 0 9999 Polarity Positive Wave form duration m gt 180 Cancel Source data for detection algorithm fields define what kind of data will be used for searching of spike like waves using amplitude temporal parameters of waves The source data can be Raw EEG or independent components of multi channel EEG signal ICA components In last case the additional parameter Minimal duration of epoch will be used to divide whole EEG file on separated epochs Amplitude temporal parameters fields define limitation for corresponding parameters values using during search
258. tions occurred within a given frequency range In another words if we have defined four standard EEG bandranges alpha beta theta and delta then after a recording interval 1s analyzed four indices will be calculated for each EEG channel representing percentages of time when the potential fluctuations had frequencies lying within the given ranges There 15 no standard algorithm for calculating EEG indices so two methods are implemented in the WinEEG software the first method is based on detection of zero crossings for half wave period calculation the second one on detection of local peaks In either case one additional parameter 1s used this is the minimum threshold signal voltage for rejecting low amplitude potential changes So a zero crossing will be considered valid if there are two time readouts such that the signal voltage should exceed the threshold for the first readout and fall below the threshold for the second one for opposite polarity signal intervals simply invert the threshold and signal relationships Besides that the potential values for time readouts placed between the above threshold readouts found should not exceed the threshold value In other words low amplitude potential fluctuations are ignored in order to eliminate amplifier noises and external ones from the analysis When detecting local peak values also only those exceeding the given threshold are taken into account The threshold potential may be set as an
259. tmaps X axis time Y axis frequency i WinEEG WinErd3 Natalya 73 File Edit wiew Format Recording Analysis Setup Window Help lol x 18 em me c zx rz E ey pup D Speed 30 mms 50 uv d Baseline 0 00 Heset Low Cut s High Cut Hz E Motch Hz 50 0 1 z Active Groups Averaging frequence bandrange e 1 O 2 ignore 3 O amp Go zl EX H Hz 34 13 3 Hz 34 13 Hz 34 13 4 For Help press F1 Hz 34 13 Cz Ref Hz 34 13 Pz Ref H 34 13 Ga Ga Tl Ra m From m fo Duration m Tathe end Step ms 4 Number Baseline Baseline used Length ms m W Channels Groups Groups Channels Time Groups Mapping Groups Time Mapping Formatted Page Average bandpower Rasters Time Frequency ERPs are depicted as graphs arranged in columns by channels and in rows by trial groups ERPs are depicted as graphs arranged in columns by trial groups and in rows by channels ERPs are depicted as maps arranged in columns by time readouts and in rows by trial groups ERPs are depicted as maps arranged in columns by trial groups and in rows by time readouts ERPs are depicted as graphs and ma
260. torage systems which are however very expensive to apply medicine So data archiving duplication 15 the only way to save results of your work Remember also that the capacity of your hard disk 1s limited so sooner or later there will be no free space in which to continue working So In case we succeeded in persuading you that accurate archiving and duplication of EEG data 15 necessary and inevitable here are some words about magnetic media Of course copying EEG files to floppy disks 1s the easiest way but also the most expensive CD Writers are the most convenient and relatively cheap A CD Writer costs 80 150 and a 640 Mb optical disk costs less than 1 So we recommend this device for EEG archiving Finally what to archive EEG files of course are most valuable and in a number of cases unrecoverable After system setup these files will be stored the DATA folder and named as D0000001 EEG D0000002 EEG D0000003 EEG etc These names are assigned automatically by the built in database Final report texts are also stored as D0000001 RTF D0000002 RTF 00000003 etc Processing results such as power spectra or EEG indices SPC and IDX files respectively can also be of a certain value In addition there are database files eegbase dbf spcbase dbf 1dxbase dbf erpbase dbf bfbbase dbf in the WinEEG working directory These contain information necessary for automatic data searching and also links
261. ts Strikeout Underline Color mm Black Script Cyrillic This screen font The closest matching printer font will be used for printing Sample Displays font sample Script 172 Choose appropriate script character set 43 Paragraph dialog Defines paragraph format Indentation Left Indent from left margin cm Right Indent from right margin cm First line First line indent from left edge of the paragraph cm Alignment Choose paragraph alignment left right or centered 44 Final report generation dialog Final report generation akTHEHOCTH 173 This dialog window simplifies the procedure of describing an EEG A user chooses the lines from list and the corresponding text is automatically inserted into the text of final report It is possible to interrupt this work and continue from the last step later Topic The name of the current topic 1s displayed in this field OK Use this button to insert the corresponding text into the final report Restart Use this button to restart menu from a list of topics 45 Final Report Templat
262. ts Main Toolbar Keys CTRL N 2 File Open EEG Database command This command opens an EEG file from the database in a new window You can open several EEG files simultaneously Use the Window menu commands to switch between opened files See Window 1 2 command As you run this command a Record List Dialog 15 displayed for searching EEG files in the database or in the archive Shortcuts Main Toolbar E Keys CTRL O 3 File Open Another Database gt EEG Spectra command This command opens an EEG spectra file from the database a new window You can open several EEG spectra files simultaneously Use the Window menu commands to switch between opened files See Window 1 2 command As you run this command a Record List Dialog is displayed for searching EEG spectra files in the database or in the archive 4 File Open Another Database gt EEG Crosscorrelations command This command opens an EEG auto and crosscorrelation file from the database in a new window You can open several EEG auto and crosscorrelation files simultaneously Use the Window menu commands to switch between opened files See Window 1 2 command As you run this command a Record List Dialog is displayed for searching EEG auto and crosscorrelation files in the database or in the archive 5 File Open Another Database gt EEG Indices command This command opens an EEG indices file from the database in
263. ts its range and step depend on the selected gain for the given channel So minimal baseline offset corresponds to 1 mm on the screen and offset range is from 100 mm below to 100 mm above Changing Channel Parameters To modify a parameter for a channel in the montage first of all select a row in the table by clicking the left mouse button on that row The row 1s then highlighted by color You can select several or all of the rows To select multiple lines use the mouse holding Ctrl or Shift key pressed To select all lines click any column heading in the table To change channel status visible hidden click the pictogram to the left of the channel or press the Space key The Show and Hide buttons set the same status for all channels simultaneously The active electrode is defined for all selected channels the montage by pressing the desired button in the Electrode gt EEG Channels group This group includes buttons for EEG and polygraphic Bio channels The passive electrode is defined for all selected channels in the montage by pressing the desired button in the Referent EEG Channels group This group includes buttons for EEG channels and other referent types 131 The gain for all selected channels be set by selecting a value from the Gain list The low cut for all selected channels can be set by selecting a value from the Low Cut s list The high cut for all selected channels can be set by selecting
264. u3 goblock Block3 quit end menu Menu4 title Optionl menu4 Option insert texti menu4 next Option2Z menu4 Option insert text2 menu4 break Options menu4 Option insert text3 menu4 go 5 Option4 menu4 Option insert text4 menu4 quit end menu 5 title Option insert texti menu5 next Option insert text2 menu5 break Option insert text3 5 go Option insert text4 menu5 quit Optionl 5 p SODLIOnz menu T Options 5 Option4 5 end endblock block Block2 menu Menu title text of titleo Optionl Option insert texti next Option2Z Option insert text2 break Options Option insert text5 go Menus Option4 Option insert text4 quit end menu Optionl menu7 Option insert texti menu7 next Option2Z 7 Option insert text2 menu7 break Options 7 Option insert text5 menu7 go Option4 menu7 Option insert text4 menu7 quit end menu 8 title text of titleg ITSerxt insert insert insert Dex text4 242 menu menu menu menu goblock Block3 next goblock Block3 break goblock Block3 go Menu9 gobilock BLOCKS quit Optionl Menus Option 1 2 Option Option3 Option Option4 menu amp Option end menu M
265. uiring button signal for Button synchronization Attention There are different modifications of buttons simple button one level button advanced button two levels button and digital button Setting of button channel depends on what type of button was used Any level signal should be used for simple button Both Low level and High level signal can be used for advanced button 1f the subject press both key during investigation The digital inputs Dig1 Dig2 should be used for digital button Subject Response Processing Press Define button to define or to modify parameters for subject response processing The subject Response Processing Parameters dialog will appear Compression The parameter is set in time readouts N and defines decrease of source EEG sampling frequency for ERP calculation A trial 1s divided into equal non overlapping time intervals 190 time readouts long and average potential value 1s calculated for each interval The result trial will have N times less time readouts than the source one Time Interval Before ms If the parameter value exceeds zero and the interval from the trial beginning till the synchronizing stimulus see above exceeds this value resulting trial will be shortened from its start Time Interval After ms If the parameter value exceeds zero and the interval from the trial beginning till the synchronizing stimulus see above exceeds this value resulting trial w
266. ull path for ERP working folder or press button to the right of the name field to browse drives and to select a folder 212 Data base parameters X Date bases of raw data Date bases of processing results Browser settings Base records search parameters Base of EEG spectra Base pathname tata ita bed pl E Working folder EG VIidea shelease SPEL Base of EEG Indecis Base pathname D SWinEE GVideo R eleaseIDSBASE DBF Em Working folder D winEEGVidec R elease INDE Base of Evacked Potentials ERP Base pathname D inEEGVideo Release ERPEASE DEF Working folder D winE EGVideo R elease EHP E Base of Event Related Desynchronisation Base pathname D WinEE GVideo Release ERDBASE DBF Working folder D winEEGVideoXReleaseXERDA z Base of Event Related Coherence Base pathname D WinEE GVideo Release E RCBASE DEF z Working tolder D WinEE GVideo Rielease ERC E Base of EEG crosscorrelation Base pathname D inEE GVideo Release CORBASE DBF Working folder D winEEGVideo R elease CUR m Database Of Event Related Desynchronization ERD Database Pathname Enter full path for ERD database or press button to the right of the name field to browse folders Database Of Event Related Desynchronization ERD Working Folder Enter full path for ERD wor
267. und card should emulate SB 16 or SB pro sound card in DOS mode We recommended to use the nest sound cards Creative Labs SB 16 Creative Labs WAV 32 Creative Labs AWE 32 Creative Labs AWE 64 Creative Labs SB Live Creative Labs SB Live Player 5 1 if it supports SB 16 emulation Creative Labs 128 PCI if it supports SB Pro emulation 2 Installation and preparation PSYTASK program 8 Install PSYTASK program To do this installation insert diskette with PSYTASK setup program and run SETUP Follow the instruction on the screen 9 Run PSYTASK program 10 Skip this step if you use PSYTASK for Windows XP Perform Change Parameters of Sound Blaster command and check the parameters Check the presentation of acoustic stimuli running one of the tasks with auditory stimuli For more information see PSYTASK user manual 11 Perform Change Parameters of External Devices DOS or Modify Synchronization Parameters Windows XP command and check parameters of Serial Port for External Synchronization The default parameters are the next Baud Rate 57600 Word length 8 Stop bits 1 Parity NONE You can change these parameters But in this case you should change them in WinEEG program also see Setup Equipment configuration command 3 Testing the synchronization of computers 12 Perform Switch to Slave Mode command of PSYTASK program 13 Perform Analysis Stimuli Presentation Programs command of WinEEG progra
268. ut Main toolbar 98 Analysis Mark artifacts command Run this command to automatically detect artifacts parts of EEG record based on threshold criteria and to mark corresponding time intervals One of the Search and rejection artifacts dialogs will be displayed on calling this command Shortcut Main toolbar n 99 Analysis Artifacts correction command Run this command to calculate spatial filter matrix that is used to correct EEG artifacts The selected part of EEG record is used to estimate EEG and artifact components of record by PCA or ICA methods The artifacts components are selected manually by visual inspection of their topography Using these data the corresponding spatial filter is computed The Artifacts space filtering parameters estimation dialog will be displayed on calling this command Run this command again to disable previously activated artifacts correction spatial filter Attention The processed part of EEG record should include both the artifacts signals and the artifacts free EEG signal to have a possibility to estimate their components of results of correction is necessary If the results are not satisfied another time interval should be selected and analyzed D Attention The algorithm of artifacts correction 1s not ideal That is why the visual inspection Attention The correct usage of this method is possible for fixed parameters of EEG montage and band pass filters That 15 why any
269. ve and a folder Append To the End Of File Check this option to append data to an existing file otherwise the file will be rewritten File appending may be useful for arranging data of several investigations an entire table for further statistical analysis 152 20 Export wavelet bandpower coherence dialog Export wavelet bandpower coherence P 3 x Data Channels amp waveforms Perfarmance data Time Interval From Stimulus 2 From msi 200 ms 400 step 200 Frequency band Hz From E To fiz Baseline correction To tram None Lenght imsi sp Format Channels inline Add Delete Select all Unselect all Select all Unselect all Groups in line File Add row names Append to the end offile Add column names e Time samples in file This dialog box work similar as described in previous chapter but user should also specify Frequency band for which average power or coherence will be calculated 153 21 Export EEG Data dialog EEG data export is used for saving data in a file readable by other applications Interval Export EEG data Interval Selection Fragment 06 08 23 Ful EEG file Start time and label of trials Farmat f ASCII Binary float C EDF European Data Format UDF Universal Data Format
270. vitii ah 22 SO tM ELI E M CIE LM UI I E i Le 223 90 Parameters Of Bandpass Filter dialog ut tU WR e WR VEA Uu M de 226 Formal dialo e asc sain CI MD MUI IM M LU 227 So POUCES C UO E e EE UL MU LIE 228 OF TANG A 229 90 PAGE dva oret dd at toU d does tet aua uu o 229 OT Paramelers ti dest 229 92 dioleedback Paraitieters dialog idi 230 PRUNI Edd 231 od undi Report d 231 95 INL Report Template tle secti e ae edu t 232 96 Setup Final Report Generator dialog m a tee t sets 233 9A Video Yecofder vida tate ftn afe 234 ISE gu PMen ON 1 CULATION dialog cose ota oto fli 236 APPENDIX1 FINAL REPORT GENERATION 22 2 2 2 2 7 7 4 00 000 238 PROGRAMMING LANGUAGE FOR AUTOMATIC FINAL REPORT GENERATION 5 5
271. w two panes 93 15 256 Activates window you choose Help menu commands The Help menu offers the following commands Help Topics Displays help topics Context Sensitive Help Displays context sensitive help About WinEEG Displays program information and copyright 94 Description of Menu Commands 1 File New command Run this command to create a new EEG file It should be created before starting EEG monitoring Before creating a new EEG file a number of EEG parameters is to be defined in the Montage Parameters dialog box consisting of 7 tabs Switch from tab to tab to define parameters for a new EEG file Fill in the patient card see Montage parameters Patient card dialog 2 Choose a montage from the existing list and or enter its parameters A montage includes a number of options such as list of monitored channels list of displayed channels and their parameters gains bandwidths baseline colors etc Don t forget that signals are acquired and recorded always monopolarly in relation to the electrodes connected with 1 A2 inputs The bandwidth for acquisition and recording is maximally wide 0 15 70 Hz or 0 5 30 Hz Remember that 0 15 Hz frequency corresponds to 1 0 sec time constant and 0 5 Hz to 0 3 sec time constant This acquisition method allows to convert raw data to any mono or bipolar montage with any bandwidth during subsequent viewing and processing created fil
272. ware software configuration The Access Codes are unique for each amplifier box and are active if this amplifier box is connected to computer only To generate Access Codes it 1s necessary to know the information about amplifier box such as its version and its serial number This information can be found using Setup Equipment parameters command The next or similar string will be displayed in Amplifiers type field if the amplifier box 15 connected to the computer Mitsar 201 version 8 serial number 46 19 Equipment configuration size Amplifiers type Not connected DEMO made part use Find Sampling rate Hz 250 Parameters of Synchronization Port Synchronization port to which slave computer is connected 1 Baudrate 57600 Number of bits E Parity None atop bits 1 Presentation device PSY TASE Graphics acceleration Method off Synchronization with Vertical Retrace Video Database Cancel The access codes should be entered to corresponding fields Main to open EEG recording function Video to open video signal capture function Database to open comparison functions with normative database Attention The access code is 8 characters string with digits or capital English letters and without additional symbols such as space point comma and others 20 Main Functio
273. y 1 0 Hz 7 Photostimulation frequency FS 5 Hz B WN ON 11 Montage modification To edit montage parameters run the View gt Select Montage command 12 Changing speed horizontal scaling On the Filters bar choose an appropriate value from the Speed list You can also use and keys Press key to decrease speed by half or key to double the speed 13 Changing gain vertical scaling On the Filters bar choose an appropriate value from the Gain list You can also use and keys Press key to half reduce gain by half or key to double the gain 54 To change gain only for a selected channel hold Ctrl pressed Otherwise gain will be changed for all channels that are visible in the montage 14 Changing upper cutoff frequency On the Filters bar choose an appropriate value from the High Cut H2 list To change high cut only for a selected channel hold Ctrl pressed Otherwise high cut will be changed for all channels that are visible in the montage 15 Changing lower cutoff frequency On the Filters bar choose an appropriate value from the Low Cut Hz list To change low cut only for a selected channel hold Ctrl pressed Otherwise low cut will be changed for all channels that are visible in the montage 16 Setting AC Mains 50 60 Hz notch filter On the Filters bar choose an appropriate value from the Notch Hz list To change notch only for a selected channel hold
274. y if EOG 25 Correction of EEG artifacts Eye blink artifacts and some other artifacts can be corrected using this procedure even if the EOG signal was not recorded This method based on blind source separation procedure from multichannel EEG data and spatial filtering of some components of EEG signal The input data is manually selected time interval including artifacts Blind source separation can be performed using both principal component analysis PCA and independent component analysis ICA methods After the decomposition of miltichannel signal the components of signal related to artifacts are selected manually based on analysis of their topographies A spatial filter matrix 1s estimated using the artifact signal topographies by Moore Penrose pseudo inversion This spatial filter 1s applied to whole EEG record This correction procedure can be performed using Analysis Artifact correction command More information concerning this method can be found at Ille N Berg P Scherg M Artifact correction of ongoing EEG using spatial filters based on artifact and brain signal topographies J Clin Neurophysiol 2002 V 19 No 2 P 113 124 and Jung T Makeig S Humphries C Lee T McKeown M Iragui V and Sejnowski T Removing electroencephalographic artifacts by blind source separation Psychophysiol 2000 V 37 P 163 178 It should be emphasized that the quality of artifact signal correction depends on a possibility to separate the bl
275. ynchronisation computation X Groups of trials No Labels Corect Incorrect Artifact i 1 2 2 0 0 0 3 3 0 o f 8 4 4 0 f o 08 ED pee i 2 34 0 8 8 7 0 Group differences a 4 3 5 5 Choose Artifact processing Synchronization Subject responce processing Level uM Stimulus Defined Channels Ont EEG Stimulus 1 Define Thresholds For channels Button channel No Method f Squared amplitude Time interval before 0 Envelope Time interval after ms 0 Substract EAP from raw EEG Compression No Smoothing 25 Normalize each trial Calculate statistical significance iy T as default 1002 Load Cave Load from database Cancel Many fields of this dialog are similar to those of Parameters for Event Related Potential Computation dialog So only additional fields are described below Smoothing this parameter is set in time readouts and defines filter sliding average width for ERD curve smoothing for each separate trial before averaging Method defines method for ERD computation Squared Amplitude Signal power is defined as square of EEG value Envelope Signal envelope is computed by means of Gilbert transformation before power calculation Subtract ERP from raw EEG If this option 1s checked then before calculating

WinEEG User Manual - Bio-Medical Instruments, Inc.

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