[Eeglablist] Make new channels

[Johan]

Hi Bill,

Try something like this for the addition of channels 1, 3 and 5 with factors
of a, b and c:

taking care of data:
EEG.data(end+1,:) = a * EEG.data(1,:) + b * EEG.data(3,:) + c *
EEG.data(5,:);

and add 1 to this value:
EEG.nbchan = EEG.nbchan+1

and take care of the name
EEG.chanlocs(end+1).labels = 'nameofnewchannel'

Good luck,
Johan






On Tue, Apr 21, 2009 at 4:53 AM, Bill Prinzmetal <wprinz at berkeley.edu>wrote:

> Hi,
>        I am a newbe to EEGLAB, but I couldn't find the answer to the
> question in the archives.  I would like to make a new channel that
> would be a combination of other channels (e.g., new channel=channel
> 65 - channel 66).  I am use to looking for eye movements, for
> example, by subtracting channels on either eye cannula.
>        I can insert or append a channel, but that does not seem to
> do it.  I take it involves a script of some sort.
> Thanks
>
> Bill
> --
>
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> Bill Prinzmetal
> Psychology Department
> University of California
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