Heart Rate Data Collection Software Application User Guide
Contents
1. measured in milliseconds Data is written for a timed period You can set the length of this period using the combo box control 2 in figure 6 above Once you are assured that you have an adequate signal press button 4 figure 6 to start recording The Lead Time control 1 in figure 6 allows you to set a short period before recording this is for when you re recording yourself and need a few seconds to become still after pressing the button A numeric display 3in figure 6 shows your progress through the timed period and another numeric display 6 in figure 1 shows each inter beat interval At the end of the timed period the application automatically switches off You can then give a name for your data file which will be saved in the user data location see the Installation and Set up Guide for details 4 5 Spectral Analysis Display UO 06 12 16 2 2H VLF LF HF LFSHF peT sam 96 3 0 414 DFT Sam Figure 7 Spectral analysis chart 31 ples This chart displays the results of spectral analysis of the inter beat interval data The meaning of spectral analysis is rather technical and is described at greater length in the HRV Application User Guide It is included here to give you an impression of the degree of coherence Good coherence looks like a single clear strong peak in the green segment with other segments being relatively flat The numeric displays show the percentage of the total power within each of2. middle of the chart 1 e Trace it causes the trace to be shifted either up or down but without changing the scale Button You can use this if the trace is disappearing off the top or bottom of the chart The trace is automatically centred during the first minute of the session Heart rate and average heart rate are shown in numeric displays 6 in figure 1 4 3 Heart Rate Calibration Displays Figure 5 Heart rate calibration displays In figure 5 above the upper chart shows raw ECG signal from which heart rate is computed The yellow dotted line shows the threshold for beat detection each time the sharp upward spike crosses the dotted line a beat is detected If you re using a PPG based device this trace will look different but the same concept applies the yellow dotted line indicates the beat detection threshold The combo box control Threshold Level labelled 1 in figure 1 can be used to fine tune the threshold level moving it higher or lower so as to give the most reliable beat detection The lower chart shows beat detection in a digitised form Note that some basic artefact exclusion methods have been applied 4 4 Recording Data LeadTime 05 RecordTime 2 min 00 44 Start Recording 1 we 3 4 5 1 2 Figure 6 Data recording controls The application writes HR data to a simple text file which can be saved for analysis The data written is simply a series of consecutive inter beat intervals
3. the three frequency bands VLF LF and HF and additionally the LF to HF ratio There is one control associated with the chart 1 in figure 7 DFT Samples This combo box controls the number of data points IBI used for the spectral analysis In effect this controls the size of the time window over which the spectral analysis is calculated Assuming an average heart rate a setting of 256 gives a window of around 3 5 minutes
4. EG Assessment Impedance Checking EEG Training Start Battery and Impedance Check Application YORK BIOFEEDBACK MIND BODY TRAINING TOOLS www york biofeedback co uk ANg Figure 1 Heart Rate Variability Tab of the Platform Application Figure 1 above shows the Heart Rate Variability tab of the Platform application Press the button labelled 1 to launch the HR data collection application Make sure you have your BioEra licence key dongle inserted into a USB socket After a few seconds two new windows will appear on your screen 2 1 Hardware Set up The physical aspects of hardware set up how to connect and use your sensors etc are dependent upon the type of amplifier you are using and are covered in a separate document Hardware Set up Guide Before you start the application you configure the Device set up jol x options accessible by clicking a button in the Set up tab of the poe In the dialog select the type of amplifier biofeedback Device GPa W evice you are using in the HR source control In the same dialog you should select the frequency of your local mains e g a 50Hz in the UK All the source settings are remembered the next time you start the Platform See the Installation and Set up Guide for further details of device set up Figure 2 amplifier status One of the device options is Simulator In simulator mode you can learn how to use the software without the encumbrance of sensors l
5. YORK BIOFEEDBACK www york biofeedback co uk Glyn Blackett Heart Rate Data Collection Software Application User Guide Table of Contents 1 Introductio eeoa ainai a aa A aa A EEA NEATA A deste 1 2 Launching the Application ccccccececcecceccceccccccccccenecceaueecuecuecuneeeneesueeuuneas 2 2 1 Hardware IRD seannsa aaa E A DAKARE NENN 2 3 Physiological Parameters ccccccccscceecseececeeeceeceeteeseeceeeaeeeesseeaeeceeseeseeseeeeeees 3 A User Interface ccc ccc cccccccccceccacecccecccceccececceceaeccenesceeaceceacececneeaueccetaueeneeaueass 3 4 1 Standard Controls Start Stop et 0 0 ec cecc eee eee esse eeeeeeeeneeees 3 4 2 Heart Rate Display and Controls ccceccceccececeeteeeeeeceeeeseeseeeeeneeeees 4 4 3 Heart Rate Calibration DISDI AYS cccecccccseeceeceeeteeeeeeteeeeeseeeteeeenass 4 dA RECON MUNN ea puts eh uate ea coalee prensa niaaea asennad eaten pinion 5 4 5 Spectral Analysis DiSplay ccccccceeeceeceecceeceeeneteeeeeeeeeeesetseseeeeeaeees 6 1 Introduction This guide introduces the Heart Rate Data Collection application part of York Biofeedback s Mind Body Training Tools suite This set of applications is designed to develop skills in mind body awareness and self regulation particularly in a context of mindfulness and meditation practice This guide shows you how to use the application The Heart Rate Data Collection application was not designed as a biof
6. eads etc The application simply uses recorded data as a source Once you have started the application you should see your device selection reflected in the device status display in the top right corner of the main window see figure 2 The lamp shown as a red square in figure 2 should change to green when you press the play button If you do not see this happen it means that the application has not been able to establish a connection with your device Check it is plugged in and that the batteries are not flat For some devices you ll see a button rather than just text Pressing this button opens up a dialog that allows you to adjust settings related to the device such as COM port The specifics depend on the device see the Hardware Set up Guide for more details 3 Physiological Parameters Heart rate data is derived from either ECG or photoplethysmograph PPG signal depending on the device type selected see device set up options on the set up tab of the launcher In either case the raw signal is displayed in the user interface see figure 5 below The heart beat detection algorithm uses a threshold which is shown as a dotted yellow line in figure 5 See section 4 1 3 below for more on heart rate calibration Figure 5 shows an ECG signal In the case of PPG the raw signal displayed is actually the first derivative of the PPG signal used because beat detection is more reliable 4 User Interface This section e
7. eedback application though it can be used for simple visual feedback Rather it s purpose is simply to record heart rate data for use with third party analysis software An example of such a software is Kubios HRV developed by the University of Eastern Finland The guide assumes that you have read the Software Installation and Set up Guide and therefore know how to start the application The user interface is covered in section 4 When you start the application you can first make sure that you are accurately detecting heart beats then you initiate a timed period during which data is recorded to a text file for later analysis The application works with several devices For an up to date list of supported hardware please see the York Biofeedback website Some of these devices use a PPG sensor to detect heart rate others use ECG the software works with both modalities 2 Launching the Application y York Biofeedback Software Mind Body Training Tools Set up Selected Trainee Default User Heart Rate Variability HEG Neurofeedback Heart Rate Variability Application Heart Rate Data Collection Application Start HRV Application 1 Be Start HR Data Collection Application Breathing View HRV Session Report EMG Muscle Tension View HRV Application Report GSR amp Skin Temperature Documentation Documentation Capnometry HRV Application User Guide HR Data Collection Application User Guide E
8. xplains the charts in the application s user interface and how to use the controls Figure 3 below shows the application s window 1 Standard Controls m 2 Heart Rate Display Ay 3 051 HRV Assess i ti 03 17 York Bial hack www york biofeedback co uk Simulator 8 Raw EC 3 Spectral Display Analysis Display Detection Lal eal Sry enco Juror Display La Sy 6 Heart Rate i Numeric Displays 5 Beat Detection Threshold Control 4 Data Recording Controls Figure 3 User Interface 4 1 Standard Controls Start Stop etc A set of buttons Play Stop and Pause are labelled 1 in figure 3 above The same in all the applications in the suite they should be self explanatory 4 2 Heart Rate Display and Controls i i z 30 Period i HRRange 30bpm Centre i Trace 2 i 1 3 Figure 4 Heart rate display and controls The chart shows heart rate in red It has three associated controls 1 to 3 in figure 4 Period This controls the length of time it takes for the trace to traverse the whole chart from right to left or in other words the horizontal range HR Range Controls the difference between the upper and lower limits of the Heart Rate display red trace upper chart Change this if the HR trace looks too bunched up or stretched out vertically Centre HR This button is used to centre the red heart rate trace to the
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