18 Apr
2012
18 Apr
'12
10:59 a.m.
Hi Charlotte,
there's no one answer to this question. It depends on the spatial extent of the effect you are looking for, the level of noise, the number of subjects in your study, etc... A rule of thumb is the "matched filter theoreom" - you want the size of the smoothing kernel to be about the size of the effect you are looking for.
cheers Bruce On Tue, 17 Apr 2012, Charlotte Bernard wrote:
Dear Freesurfer users,
I would like to know what is the level of smooth recommanded to use for surface-based group analysis? Thank you, All the best, Charlotte