afni.nimh.nih.gov

That EPI dataset looks kind of small (in space). Only 71 mm in extent from L-R (half the brain width, roughly) and also in A-P, and only 35 mm in I-S. If you look at these two datasets in AFNI, do they properly overlap? That is, if the EPI dataset is the underlay and the brain mask dataset is the overlay, do the images overlap properly?