[Eeglablist] Ground electrode location

[Steve Luck]

Hi Darren.  The ground location does not matter as long as you are ultimately using some other site as the reference (either during recording or by re-referencing offline).  For details, see Chapter 3 in An Introduction to the Event-Related Potential Technique (MIT Press -- note: a second edition will be coming out in about a year).

Steve


> From: Darren Tanner <dstanner at gmail.com>
> Subject: [Eeglablist] Ground electrode location
> Date: June 26, 2013 6:49:47 AM PDT
> To: <eeglablist at sccn.ucsd.edu>
> 
> 
> Hi all,
> 
> Can anyone let me know if it's problematic to place the ground electrode over one hemisphere (rather than, say, the midline)? Due to convenience reasons, we may be ordering some caps which have the ground electrode over a right hemisphere site. My understanding is that the location of the ground electrode on a conventional EEG system should not matter (in contrast to the location of the reference electrode, which does matter), but I wanted to be sure that putting it on the right hemisphere would not introduce any hemisphere asymmetries in the effects.
> 
> Thanks!
> Darren
> 
> -----------------------------------------
> Darren Tanner, Ph.D.
> Postdoctoral Scholar
> Bilingualism and Language Development Lab
> Center for Language Science
> Department of Psychology
> Penn State University
> 
> 

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Steven J. Luck, Ph.D.
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