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.
3dAutomask works (approximately) by first thresholding the data, then keeping the largest connected set of above threshold voxels. I'm not sure how this could happen with normal EPI data. However, if you upload a sample dataset I'll take a look at it. Use the Upload Data link to the left and follow the instructions assiduously.