[FieldTrip] Quality of beamforming on MNI template vs single-subject MRI
andrea.brovelli at univ-amu.fr
Thu Apr 4 14:18:23 CEST 2013
I used DICS and compared the quality of the beamforming using two
different source spaces (3D grids):
1) MNI template space as described in
2) Single subject 3D grid using anatomical MRI
The number of sources in the two models is similar (approx. 3500
sources). However, the results using the MNI template are less
significant. That is, the statistical analysis testing a significant
increase in power post-stimulus with respect to baseline give higher
p-values (in some region of interest).
Does anyone know why ?
Is the use of the MNI template the only (and best) way to allow
statistical analysis across subjects in the source space ?
thanks a lot
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