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perakakis / HEPLAB

Detection of ECG events (R wave, T wave) for the preprocessing of the heartbeat evoked potential
GNU General Public License v3.0
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Issue in viewing my ECG signal correctly #1

Closed Mehafatima1 closed 4 years ago

Mehafatima1 commented 4 years ago

Hello.

I am having trouble withe viewing my ECG signals. I am attaching figures for reference:

Slide 1: Shows how my ECG channel appears on data scroll. (I have viewed it on a scale of 100 so this is why it doesn't appear as a proper signal, it shows clear ECG signal at 1000 scale)

Slide 2: Shows how my ECG signal appear on HEPLAB GUI.

Slide 3: Shows that after detecting peaks using ecgfast, my IBIs appear really weird.

I am pre-processing data by filtering through FIR filter at 1 and 40 Hz. Then I open it in HEPLAB and again filter it at 3 and 30 Hz as indicated in the guide. My ECG signals otherwise appear perfect but I am having challenges with viewing them on HEPLAB. I am entering sampling rate as 250 Hz while opening my .txt file. Can someone please help where am I missing something? [ Slide1 Slide2 Slide3

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perakakis commented 4 years ago

Could you please send me by email (perakakis AT gmail DOT com) the dataset so I can have a look and help resolve this problem?

perakakis commented 4 years ago

I applied a 10Hz lowpass filter and the Pan-Tompkin algorithm and everything looks correct. I have not been able to reproduce your figures from the data you sent me.

Screen Shot 2020-09-02 at 14 41 31

Screen Shot 2020-09-02 at 14 41 46

Mehafatima1 commented 4 years ago

Thank you so much Perakakis