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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mpschroed
January 31, 2017 03:32PM
Hello all,
I would like to perform a test (presumably in 3dMEMA) to see whether a covariate affects activation on a task. I hypothesize that there is a correlation between the covariate and activation (e.g., the greater the covariate, the more activation). I have two groups; I expect there to be a correlation with activation in one group but not in the other group. Is this a test that can be done using 3dMEMA? Or would I run 3dMEMA on the group that has the correlation, create a mask of regions that show that correlation and then look at the other group to show that they don't show a similar effect?

-Matt
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3dMEMA: Test whether a covariate impacts activation

mpschroed January 31, 2017 03:32PM

Re: 3dMEMA: Test whether a covariate impacts activation

gang February 01, 2017 11:13AM