Don't do 3D spatial smoothing when you are preparing for surface-based
analysis. The order of the 2D smoothing/estimation will not matter too
much because they are both linear operations (assuming you are not
carrying forward the variances to use in a weighted least squares way).
doug
Joonkoo
Dear freesurfers,
How is spatial smoothing performed during a conventional fmri processing
stream?
I used SPM to (1) run the 1st level analysis on each subject, (2)
transformed the resulting volumetric statistical parametric map to the
surface space, (3) normalized each individual's surface map o
