afni.nimh.nih.gov

Hi 2086,

If you plan to do an ROI analysis, then assuming the ROIs are actually inside the brain masks, then applying the brain mask won't make any difference.


Both the scaling and regress steps use a mask to decide which voxels to zero out. Other voxels are unaffected. That is why you need not apply a mask, it only hides results. One would usually prefer to see more results.

- rick