Hi Ziad,
thanks for getting back to me. The ROI generation is probably something I look into only if a situation arises where I really need it.
I still don't understand why the version of SurfVol that has been aligned to my epis, seems to be aligned with the surfaces, despite the fact that it is not aligned with the original SurfVol. I have now seen this with lots of datasets in different experiments. Mapping data from surface space into volume space also works great, as long as I use the aligned SurfVol as input to 3dSurf2Vol. Strange, but actually a nice feature for me.
I have one more question: what is the current procedure in AFNI/SUMA for doing surface-based normalization for group-level analysis?
Best,
Peter
