Search found 2 matches

by gganis
Wed Dec 12, 2018 7:38 pm
Forum: BioSemi Hardware
Topic: Odd ~17Hz noise in all channels
Replies: 9
Views: 16480

Re: Odd ~17Hz noise in all channels

Hi, to answer your questions: The GSR is not used I did a systematic bucket test yesterday, using all the 32 + CMS/DRL electrodes for connector A and 5 of the EXG electrodes (connected via the headbox to connector B, no GSR electrode). It looks like this type of noise is still there (perhaps smaller...
by gganis
Mon Dec 10, 2018 9:03 pm
Forum: BioSemi Hardware
Topic: Odd ~17Hz noise in all channels
Replies: 9
Views: 16480

Odd ~17Hz noise in all channels

Hi, there seems to be a largish ~17 Hz noise in all 32 channels + EXGs. When the subject is connected, I can definitely see EEG and eye movements, but superimposed there is this 17 Hz noise. When we examined the Aux channels, it looks like the continuous sinusoid seen on the Plet channel. The Box is...