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

History of AFNI updates  

Previous Message Next Message
Message List New Topic Print View
|
gang
March 30, 2022 09:17AM
> 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?

Visualizing data with hierarchical structures is as simple and straightforward as it sounds like. It would be more revealing to plot the data per subject and per level of each within-subject factor, which can be very challenging.

To assess the directionality for a quantitative variable, add something like the following to your script:

-gltCode ... 'Session : Movement :' \
-gltCode ... 'Session : 1*T1 Movement :' \
-gltCode ... 'Session : 1*T2 Movement :' \

Gang
Reply Quote
RSS
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