Reference and averaging
Posted: Wed Jun 21, 2006 5:09 pm
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 average if I want to subtract the common mode correctly. Is this right?
Best,
Pär
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 average if I want to subtract the common mode correctly. Is this right?
Best,
Pär