AFNI Message Board

Dear AFNI users-

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.

Sincerely, AFNI HQ

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Phil Burton
March 31, 2010 06:14PM
I'd be interested in hearing a definitive answer to this, also. My recollection from years ago was that Doug Ward was pretty adamant about running AlphaSim in original space, in which case one would need to multiply by the original voxel dimensions to use the results to threshold in 1x1x1 Talairach space. In more recent message board posts, the recommendations range from running AlphaSim in Talairach space to begin with (for group data) to resampling to 2x2x2 and splitting the difference (more or less). So I'm a little confused about the departure from what was originally recommended by the person who wrote the program. Have we since learned that the difference in results is trivial enough that it doesn't really matter?
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Subject Author Posted

Alphasim Clarification

Laura March 31, 2010 04:15PM

Re: Alphasim Clarification

Phil Burton March 31, 2010 06:14PM

Re: Alphasim Clarification

Colm Connolly March 31, 2010 06:53PM

Re: Alphasim Clarification

rick reynolds April 05, 2010 02:00PM