[Eeglablist] deleting unused EEG channels

[Arnaud Delorme]

Dear Steve,

you need to delete the channels using the menu Tools > Select data.
Best regards,

Arno

On Nov 6, 2009, at 3:44 PM, Steve Genco wrote:

> I am importing data into EEGLAB from an ANT EEProbe .CNT file.
>
> I am using a 128 electrode cap for data collection, but only gelling  
> the first 32.  ASA insists (correctly) that the recording has 131  
> channels (there are 3 poly channels in addition to the electrode  
> channels), but of course channels 33+ are flat lines.  In ASA I just  
> apply a 32 electrode montage and I’m in business, but there seems to  
> be no way to apply a montage in a similar way in EEGLAB.
>
> I would like to delete the extraneous channels.  I’ve tried deleting  
> channels in the edit channel info dialog, but it won’t let me do it  
> … when I exit I get this Confirmation dialog:
> “The number of data channels (32) not including fiducials does not  
> correspond to the initial number of channels (131), so for  
> consistency purposes new channel information will be ignored if this  
> function was called from EEGLAB.”
> I’m left with the 131 channels.
>
> I’ve also tried this on the command line:
> EEG = pop_chanedit(EEG, 'delete', [33:131] )
> But when it returns the EEG structure there are still 131 channels.
>
> Thanks.
>
> --
> Steve Genco
> Lucid Systems, Inc.
>
>
>
> <ATT00001.txt>

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