Hi jeffreyj,
I also see these slow waves in frontal electrodes from time to time. I am quite sure they are due to sweating. This modulates the skin conductance at the forehead and could theoretically lead to this kind of effect. I haven't done any real tests of though...
P
Search found 4 matches
- Fri Feb 08, 2008 10:57 am
- Forum: BioSemi Hardware
- Topic: very slow wave at frontal sites
- Replies: 2
- Views: 10489
- Wed Jun 21, 2006 5:09 pm
- Forum: EEG data analysis
- Topic: Reference and averaging
- Replies: 1
- Views: 8995
Reference and averaging
Hi, I just realized that when I average my EEG data (in order to get an ERP) I am using the unreferenced (i.e. CMS referenced) signal. First AFTER the averaging I choose an other channel as reference. As far as my (incomplete) understanding goes, I have to do the re-referencing BEFORE making the ave...
- Thu Jan 26, 2006 6:53 pm
- Forum: BioSemi Hardware
- Topic: Skin electrodes
- Replies: 2
- Views: 21599
- Wed Jan 25, 2006 12:46 pm
- Forum: BioSemi Hardware
- Topic: Skin electrodes
- Replies: 2
- Views: 21599
Skin electrodes
Hi,
Our Biosemi system came with a little bonus: 2 skin electrodes. Its not the ordinary flat ones. These connects to the aux3 of the AD-box and seems to be passive.
The problem is that I can't get a signal in ActiView. Do I need a modified version of ActiView or what?
Cheers,
P
Our Biosemi system came with a little bonus: 2 skin electrodes. Its not the ordinary flat ones. These connects to the aux3 of the AD-box and seems to be passive.
The problem is that I can't get a signal in ActiView. Do I need a modified version of ActiView or what?
Cheers,
P