Clusterplot not highlighting clusters & average layout file
manish.saggar at GMAIL.COM
Tue May 12 10:16:39 CEST 2009
I have a question regarding clusterplot function. I am doing a
The experimental design that I have is as follows, there are three
conditions C1, C2 and C3. Each condition is of 1 min duration (e.g.
rest with eyes open for 1 min).
Now I am comparing grandaverage of freq representation of a set of
subjects for C2 with C1 etc. FreqStatistics is running just fine
creating significant (<0.025 alpha, for 2-tailed test) clusters
(positive). Now the problem is that when I try to plot the location of
this cluster using clusterplot it doesn't show any highlighted
channels. Any ideas why that is happening?
Another question is that since I am using grandaverages of freq
representation, what should I use for layout file (using BESA sfp file
here). I have individual subject layout files. Currently I am just
giving any file from one of the subjects. Since, I noticed that
FreqStatistics finds a common minimum set of channels and then apply
statistics on it. So do I need to average layout files for the subject
group or is there any other way?
Any help is much appreciated.
The aim of this list is to facilitate the discussion between users of the FieldTrip toolbox, to share experiences and to discuss new ideas for MEG and EEG analysis. See also http://listserv.surfnet.nl/archives/fieldtrip.html and http://www.ru.nl/neuroimaging/fieldtrip.
More information about the fieldtrip