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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chaj
November 15, 2018 05:06PM
I am trying to run 3dMVM with

Between-subject factor : group (G1, G2, G3, and G4), scanner (scan1 and scan2),
Quantitative Covariates : gender, age, and accuracy

I am using the contrast obtained from SPM instead of the beta images. I am trying to get the average effect similar to what we get from SPM.
In SPM when we look at the average effect F stat-map, it seems like the covariates are given zero weight. Is 3dMVM also doing the similar things or covariates is treated in different manner? I want to control for covariates, should I give any weight in the 3dMVM code?

Also when I see the results obtained by 3dMVM 'gltCode', on the AFNI window, it shows like 'average_effect Z'. Does 'Z' mean the z-transform image?


Thanks
Jung



Edited 1 time(s). Last edit at 11/15/2018 05:06PM by chaj.
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Subject Author Posted

3dMVM_ Covariates

chaj November 15, 2018 05:06PM

Re: 3dMVM_ Covariates

gang November 16, 2018 04:57PM

Re: 3dMVM_ Covariates

chaj November 16, 2018 05:28PM