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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Robert Cox
July 14, 2004 11:14AM
I presume you have created the individual subject % change maps via 3dDeconvolve, etc.

There are two obvious approaches. One is to divide the subjects into some small set of groups (young, middle, old). Then do ANOVA on these groups, using 3dANOVA. The other is to do linear regression (say) on % changes in each voxel, using age as the covariate, using 3dRegAna.

For further details, either consult the relevant manuals for these programs, or post some more. However, this week is the AFNI bootcamp here at the NIH, so we are all involved in teaching AFNI to 40 victims. Replies will be sluggish for a while.

bob cox
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Correlation Analysis Inquiry

Jennine July 14, 2004 10:53AM

Re: Correlation Analysis Inquiry

Robert Cox July 14, 2004 11:14AM