[Eeglablist] Channel import

Ilya Adamchic dr.ilya at yahoo.com
Thu Feb 11 05:44:34 PST 2010

Hi Joe,

thanks for your reply!
I have tried various options, including using 129 channels (128 + reference) and i always get the same warning. The only way EEGLAB accepts channel locations is, when i delete all fiducials, so that number of channel locations exactly corresponds the number of actual channels (columns of data). Since I need to use DIPFIT co-registration function, i need all of them including fiducials, to align my ellectrodes.


From: Joseph Dien <jdien07 at mac.com>
To: Ilya Adamchic <dr.ilya at yahoo.com>
Cc: eeglablist at sccn.ucsd.edu
Sent: Thu, February 11, 2010 4:43:06 AM
Subject: Re: [Eeglablist] Channel import

What about your 129th channel?  The EGI 128-channel system actually has 129 channels when you include the reference channel (Cz).



On Feb 8, 2010, at 7:05 PM, Ilya Adamchic wrote:

Hello dear Colleagues!
>I'm having an issue, with what seemed to be easy task. I try to import my scanned cannel location in to EEGLAB from EGI system (*.spf file in Cartesian system). I have 128 EEG channels and 3 fiducial points, all of this are recognized o.k. but as soon as I try to accept these channel locations by pressing OK button in Edit EEG channel window I get the following message: „The number of data channels (131) not including fiducials does not correspond to the initial numbed of channels (128), so for consistency purposes...and so on..will not accepted. ". 
>My data set contains 128 channels + 3 fisucials=131....so what am I missing...?
>Thanks a lot for all yours help.
>Best regards!
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Joseph Dien,
Senior Research Scientist
University of Maryland 
7005 52nd Avenue
College Park, MD 20742-0025

E-mail: jdien07 at mac.com
Phone: 301-226-8848
Fax: 301-226-8811

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