Search found 4 matches

by Cedric
Tue Sep 17, 2019 8:15 pm
Forum: ECG/EMG data analysis
Topic: offline heart rate extraction from ECG signal
Replies: 13
Views: 34796

Re: offline heart rate extraction from ECG signal

Noted. Thanks so much!
by Cedric
Wed Sep 11, 2019 6:50 pm
Forum: ECG/EMG data analysis
Topic: offline heart rate extraction from ECG signal
Replies: 13
Views: 34796

Re: offline heart rate extraction from ECG signal

Hi Coen, I had read somewhere that it was recommended to do a downsampling at 64 Hz, a lowpass filter at 15 Hz to remove the noise, and a Highpass filter at 0.1 Hz to remove the drift. Would you agree with these values to preprocess Biosemi ECG data? Thank you for providing the information above abo...
by Cedric
Thu Apr 11, 2019 11:18 pm
Forum: BioSemi Hardware
Topic: Odd ~17Hz noise in all channels
Replies: 9
Views: 16617

Re: Odd ~17Hz noise in all channels

@robbie303 Because Coen suggested it in the previous email to troubleshoot the 16Hz artifact. Try experimenting with an alternative DRL location. A DRL locate between the GSR electrodes and the headcap electrodes are optimal in theory. Try locating the DRL in the neck. A pin-CMS/flat-DRL is availabl...
by Cedric
Fri Jan 25, 2019 8:45 pm
Forum: BioSemi Hardware
Topic: Odd ~17Hz noise in all channels
Replies: 9
Views: 16617

Re: Odd ~17Hz noise in all channels

Hi,

Do you know if you have a similar artifact at 48 Hz by any chance? Surprising you still see it in the bucket test. I have had artifacts visible at 16 and 48 Hz, but they disappear after cleaning the data.

Cedric