[Eeglablist] Rereference EEG reference using reref

[Eriksen, Jeff :LPH EEG]

I say do not do this. Your calculated reference will simply be a linear
combination of the other electrodes and not add anything to the
classification. The only benefit one can get from the reference
electrode is a small improvement in source localization, more so if you
have a small number of electrodes.

-Jeff Eriksen
Portland, OR

-----Original Message-----
From: eeglablist-bounces at sccn.ucsd.edu
[mailto:eeglablist-bounces at sccn.ucsd.edu] On Behalf Of David Kaufman
Sent: Thursday, November 07, 2013 4:53 PM
To: eeglablist at sccn.ucsd.edu
Subject: [Eeglablist] Rereference EEG reference using reref

Hi eeglab community,

I'm currently working with eeg data which was recorded using a single
reference electrode. I now want to reconstruct this reference by using
reref. Later I want to be able to add this additional channel to improve
my classifier.

Currently, my call to reref looks like this:
reref_trial = reref(trial, []);
where trial is a 32x301 single matrix. Unfortunately, reref also returns
a 32x301 single matrix. I was expecting to get a 1x301 matrix with only
the reconstructed reference. Am I understanding reref wrong?

Do you have any suggestions? I'm using eeglab version 12_0_2_4b.

Thanks for any help
David
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