[Eeglablist] how can I rereference to average of ear electrodes
arno at salk.edu
Tue Dec 5 13:21:17 PST 2006
> The montage of our recordings were C3-A2, C4-A1, O1-A2 and O2-A1.
> I have performed pop_reref with data with these four electrodes but data
> after re-reference seemed quite
> similar prior to re-reference.
The pop_reref() function cannot help you with this kind of setting.
Unfortunately EEGLAB does not store (yet) the reference for each
electrode. The montage can thus only be average-reference or common
reference. So EEGLAB cannot re-reference your data.
Note that in your case, there is not much you can do anyway (with 4
electrodes, you cannot really compute average reference). So, if you
cannot use the average reference assumption, it is not possible to
re-reference all 4 electrodes to (A2+A1)/2.
Hope this helps,
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