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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Peter Molfese
January 03, 2014 05:22AM
In AFNI, you would run 3dFWHMx on your residual time series (errts) to get estimates of smoothness for each individual. Assuming those estimates are similar across all subjects, you then average those smoothness values (xyz) as your input for 3dClustSim.

In SPM, you may be able to use spm_est_smoothness() on each individual subjects ResMS.hdr. The suggestion from Andy's Brian Blog [andysbrainblog.blogspot.com]. There are some posts on the SPM mailing list on this topic suggesting similar courses of action.
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Subject Author Posted

smoothness estimation

Maryemtq January 03, 2014 03:01AM

Re: smoothness estimation

Peter Molfese January 03, 2014 05:22AM

Re: smoothness estimation

frogEye August 29, 2014 05:05AM