afni.nimh.nih.gov

> Is it possible to specify with 3drefit -statpar that each voxel has a different
> statistical parameter v? As far as I understood the parameter (e.g degrees of
> freedom for t-stats) must be the same number in all voxels.

The statistical parameters are stored in the header as axillary information, which basically means those parameters apply to the whole dataset. With the current setup 3drefit does not allow different parameters across voxels.

Gang