[Eeglablist] Editing digitization

Arnaud Delorme arno at ucsd.edu
Tue Sep 30 12:54:38 PDT 2014

Dear Anderson,

Yes you can shrink the electrode position (if you have the right center for the head) in the channel editor.
Some software allow to enter some parameter to correct for this during data collection.


On Sep 30, 2014, at 6:15 AM, Anderson Oliveira <asoliv at umich.edu> wrote:

> Dear EEG lab users,
> I'm recording EEG data from a new wireless EEG system (Cognionics 64 channels) and the equipment has a central spine that runs from the back to the front, and also some straps that run laterally over the subject's head. I was planning to digitize the positions of the electrodes, but the digitization has an offset in relation to the scalp surface due to the spine and straps. Is there any function in EEGLAB that can account for the difference between the digitized position and the actual scalp surface? What I was wondering is if there'd be something like "shrinking the coordinates" to get the digitized positions closer to the real electrode positions.
> Thanks for the help,
> Anderson
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