Hi Mahsa,
The 3dcalc program can multiply them:
3dcalc -a rest.nii -b ROI.nii -expr 'a*bool(b)' -prefix rest.masked.nii
But why do this?
What processing has already been done?
Note that by default, afni_proc.py does not
mask the data (i.e. at the single subject
level), leading to the question, "why do it"?
- rick
