[Eeglablist] EOG and EEGLAB

[Arnaud Delorme]

>
>
>we record using MANSCAN and I have formatted the output to be readily used
>with the EEGLAB MATLAB toolbox.  However, I am using 2 bipolar EOG
>channels simultaneously and have not been able to import them into EEGLAB.
>
EEGLAB should be able to import any data channel. You might want to 
check the output of MANSCAN to be sure that EOG channels are exported. 
Though EEGLAB should be able to import and vizualize such channels, 
EEGLAB can not yet handle properly bipolar channels. For best results 
using ICA, all channels should use the same reference (in our lab we 
record EOG channels using the same reference as for other channels). If 
you do not use the same reference, this will raise problems when running 
ICA (complex though potentially solvable problems). At this stage, we 
advice not to include such bipolar channels when running ICA.

>If so, is there a way to use these EOG channels for an automated eye
>movement removal in the rest of the data?
>
No, but if you know the procedure it should be straightforward to 
program a function that uses the EEG.data array and the eegrej() 
function to perform such a task. You may even program a simple EEGLAB 
plugin that can be distributed independently of EEGLAB.

see http://sccn.ucsd.edu/eeglab/contrib.html
-- 

*Arnaud Delorme, Ph.D.*
Computational Neurobiology Lab, Salk Institute
10010 North Torrey Pines Road
La Jolla, CA 92037 USA

*Tel* : /(+1)-858-458-1927 ext 15/
*Fax* : /(+1)-858-458-1847/
*Web page *: www.sccn.ucsd.edu/~arno <http://www.sccn.ucsd.edu/%7Earno>


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