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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giono
March 29, 2022 07:50AM
Hi again,

I have a follow up to my previous questions.
In the end I had a design with two within factors (2 levels each) and 3 covariates.
Let's say I observe clusters for the F test of one covariate. I would interpret that as: those voxels covary with the covariate. How do I investigate if it is a positive or negative relation though? If I extract the betas and correlate those with the covariate they do not always correlate significantly (sometimes trendlines are even flat and correlation coefficients are close to zero!). Now I am aware this is there as a result of a correlation... but how do I investigate it further?
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Subject Author Posted

3dLME, F tests and GLts

giono October 05, 2021 10:14AM

Re: 3dLME, F tests and GLts

gang October 06, 2021 12:49PM

Re: 3dLME, F tests and GLts

giono March 29, 2022 07:50AM

Re: 3dLME, F tests and GLts

gang March 30, 2022 09:17AM