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.
Use 3dresample to match the grid of one dataset to another. Voxel sizes or orientations may be different between your two datasets. Concatenating two datasets that have been aligned in different ways into Talairach space may not be useful unless you have a good reason to do it. You might considering using @auto_tlrc to do the auto-talairaching for both datasets from their original space.