Dear FreeSurfers,

Is there a way to estimate the number of fMRI voxels that intersect with
the FreeSurfer anatomical inflated surface space? -"- for a given surface
label?

We need this as N for calculations of statistical significances (to
correct for the oversampling of the orginal 3D voxel space by very densely
spaced vertex points on the surface).

For this purpose, the voxel size was 3.125 x 3.125 x 4.4 mm, the FOV
covered the entire brain, and the anatomical brain is "fsaverage".


Thanks!

-Tommi

---
Tommi Raij, M.D., Ph.D.
MGH/MIT/HMS Athinoula A. Martinos Center for Biomedical Imaging
Bldg 149, 13th St
Charlestown, MA 02129
U.S.A.
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