Search found 3 matches

by tali
Mon Oct 08, 2012 11:54 am
Forum: EEG data analysis
Topic: EXG1-8
Replies: 1
Views: 9924

EXG1-8

OK, a naive question...

biosemi 64-channels:

The EXG1-8 electrodes- the ground is also CMS?

(i.e. if there is a response on the earlobes/mastoids (EXG1-EXG8)- will it be due to activity measure at the CMS?)

thanks...
by tali
Sat Oct 06, 2012 11:36 pm
Forum: EEG data analysis
Topic: 32 channels (64-channels cap)
Replies: 4
Views: 17884

32 channels (64-channels cap)

Hi all

I have a cap with 64-channels
If I want to record only the R hemisphere (for saving time)- 32 electrodes.
If I attach the CMS and DRL, Will the results will be reliable?

thanks
by tali
Sat Oct 06, 2012 11:08 pm
Forum: EEG data analysis
Topic: ERP- Reference (Earlobe)
Replies: 0
Views: 12156

ERP- Reference (Earlobe)

Hi. My lab purchase EEG (64 channels). So... I did a simple experiment: a tone (duration: 200msec, 70db, 1KHz) was repeated ~300 times. Subjects were ask to close their eyes and count the number of tones. After averaging, I get 2 clear peaks on the earlobes and mastoids: P1=~120msec, P2=~250msec (ma...