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.
Dan Rowe and Rick Reynolds provided the answer about what the derivative of the gamma function looks like back on 10/3/03. You can add this as an additional stim_file in 3dDeconvolve once you've created the stim_files in waver with the derivative equation and stimulus times.