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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st
October 03, 2019 10:59AM
Hello experts,

I wold like to ask for advice on setting up an analysis.

I have a 2x2 experimental design with two unbalanced groups fMRI data.

The questions are -
(1) in the control group, which areas are associated with factor A, factor B, and factor A*B, and
(2) In the regions identified from Q1, does the measure in the experimental group differ from the control group for factor A, factor B, and factor A*B .

I would like to add the covariates age, sex, and head motion to this model.

So, the 2 factors are within subject variables, and the groups and covariates are between subject factors. From what I understood from the handouts and threads here, I should use 3dMVM or 3dLME. I also saw one where Gang has suggested to use a 3dttest++ instead for each comparison directly.
I would appreciate you advice. Thanks a lot!

-S
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2x2 design analysis

st October 03, 2019 10:59AM

Re: 2x2 design analysis

gang October 04, 2019 11:29AM