[FieldTrip] beamforming - normilise issue
Davide Rivolta
drivolta81 at gmail.com
Wed Oct 19 15:54:37 CEST 2011
Dear all,
I am trying to use beamforming for some MEG data.
I have 1 condition, and I wish to compare it against the baseline. Ideally I
wish to have the average of all group and statistically compare stimulus
agains baseline..
As such, for each subject I calculate the source for the baseline and the
source for the stimulus (using a common filter as indicated on the website).
I then call ft_sourceinterpolate and, since I wish to have a group analysis,
ft_volumenormalise.
In order to compute the average, I call ft_sourcegrandaverage.
Even though the help tells me that it is fine, the grandaverage does not
work if the input is from the ft_volumenormalise. It is because there is not
the ".pos" field!
Am I doing something wrong?
Any advice would be great.
Thanks a lot,
Davide
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