[Eeglablist] When to perform re-reference?

[Jerry Zhu]

Hi all,
At which stage do you re-reference your data? It was suggested do re-ref
before ICA (http://sccn.ucsd.edu/pipermail/eeglablist/2011/003795.html).
How about re-ref before/after bad epochs rejection and bad channel
interpolation? The note here  (
ftp://ftp.egi.com/pub/documentation/technotes/SplineInterpolation.pdf)
suggests after interpolation. ("Since the interpolated potentials can be
used to better approximate the average reference (Junghofer et al., 1999),
it may be somewhat advantageous to compute the interpolated potentials
directly from the measured data, in which case the voltages below are best
thought of as referring to these measured potentials")

What is your experience? Thanks for your sharing and suggestions!

Jerry
--
Jian Zhu, M.A.
Brain and Cognitive Sciences
Department of Psychology
Southern Illinois University Carbondale
Web: http://zhupsy.com

We have two halves in the brain: left and right. Nothing is right in the
left. Nothing is left in the right.
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