[Eeglablist] eeglablist Digest, Vol 74, Issue 21

Steve Luck sjluck at ucdavis.edu
Tue Dec 28 13:29:49 PST 2010

Dear Xiaoxi,

This can be achieved very easily using the Channel Operations tool in ERPLAB Toolbox (erpinfo.org/erplab), which plugs into EEGLAB and can operate either on EEG or on averaged ERPs.  Specific instructions can be found at the end of the following manual page: http://erpinfo.org/erplab/erplab-documentation/erplab-manual/Bin_Operations.htm

Steve Luck

> From: Xiaoxi Chen <nancy.chen.psy at gmail.com>
> Date: December 27, 2010 6:33:50 PM PST
> To: eeglablist at sccn.ucsd.edu
> Subject: [Eeglablist] channel location problem: ipsilateral and contralateral question
> Dear all,
> My visual stimuli was presented on either left visual field or right visual field, so I had to label channel locations on the ipsilateral and contralateral sides, and then average the contralateral side of both left presented stimuli and right presented stimuli (the same with ipsilateral side of both left presented stimuli and right presented stimuli ). Here I got a question:
> How can this be done in EEGlab? 
> I  tried to isolate left and right stimuli into two single datasets and load different channle location files separately, but I had to append these two datasets to draw Sum/Compare ERP waves. While how does EEGlab append several datasets- based on the number of channel location, or the name of channel location?  If these two datasets had different channel location file, then the appended dataset would not have an unnified channel location. How to solve this problem.
> And how does  "Sum/Compare ERP waves" draw waves - based on number of channel location, or the name of channel location?
> Can you give some suggestions?
> Thanks for your time.
> regards,
> -- 
> Xiaoxi Chen,
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Steven J. Luck, Ph.D.
Director, Center for Mind & Brain
Professor, Department of Psychology
University of California, Davis
Room 127
267 Cousteau Place
Davis, CA 95618
(530) 297-4424
sjluck at ucdavis.edu
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