baseline, combine_planar, and freqanalysis

Sangita Dandekar sangita.dandekar at GMAIL.COM
Tue Oct 5 13:56:32 CEST 2010

Thought I'd try reposting once, since I happened to send this on a weekend
and didn't receive any reply. Sorry for the repost.

---------- Forwarded message ----------
From: Sangita Dandekar <sangita.dandekar at>
Date: Fri, Oct 1, 2010 at 12:00 PM
Subject: baseline, combine_planar, and freqanalysis
To: FieldTrip discussion list <FIELDTRIP at>


I'm wondering about the optimal order in which to apply combine_planar and
baselining (relative to a pretrial time window)  to time-frequency power
spectra data.

Does it make more sense to do:

1. meg_planar
2. freqanalysis
3. combine_planar
4. freqbaseline (on a trial by trial basis?  see below)

or B:
1. meg_planar
2. freqanalysis
3. freqbaseline(on a trial by trial basis? see below)
4. combine_planar

Also, are there any opinions on whether baselining on a trial by trial basis
is preferable or  if it might be better to instead baseline with respect to
the average of all pretrial baseline power spectra?

Thanks in advance,

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