[FieldTrip] re-referencing EEG signals

["Jörn M. Horschig"]

Dear Hweeling,

re-referencing is a linear step and can be done at any time preceding 
any non-linear transformation, e.g. computing a power spectrum. So it 
depends on what type of preprocessing you have planned, but for the most 
usual preprocessing steps the answer is that it would not make any 
difference when exactly you are doing this.

Best,
Jörn

On 6/30/2014 11:19 AM, Hwee Ling Lee wrote:
> Dear all,
>
> I was wondering if re-referencing of EEG signals should be done before 
> trial definition or after all the preprocessing have been done.
>
> Would it make a difference in terms of statistical analyses?
>
> Thanks.
>
> Best regards,
> Hweeling
>
>
>
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-- 
Jörn M. Horschig
PhD Student
Donders Institute for Brain, Cognition and Behaviour
Centre for Cognitive Neuroimaging
Radboud University Nijmegen
Neuronal Oscillations Group
FieldTrip Development Team

P.O. Box 9101
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