We are very pleased to announce that the new AFNI Message Board framework is up! Please join us at:
https://discuss.afni.nimh.nih.gov
Existing user accounts have been migrated, so returning users can login by requesting a password reset. New users can create accounts, as well, through a standard account creation process. Please note that these setup emails might initially go to spam folders (esp. for NIH users!), so please check those locations in the beginning.
The current Message Board discussion threads have been migrated to the new framework. The current Message Board will remain visible, but read-only, for a little while.
One option is to combine the spheres with white matter with 3dcalc. You can generate white matter masks with FreeSurfer or even 3dSeg. Mask out the data with something like this:
3dcalc -a masks+orig. -b wm_mask+orig -expr 'a*not(b)' -prefix masks_no_wm