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  

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March 08, 2021 06:22PM
Irene,

Such a small difference in p-value is not surprising for two main reasons:

** The LME model you adopted using lmer() is close to, but not exactly the same as, the one with 3dMVM. The MVM model is elaborated in the following paper: [www.sciencedirect.com]

** Extracting and the averaging the voxels within an ROI would change the data structure to some extent. In other words, the two processes of averaging and modeling are not commutative.

Gang
Subject Author Posted

Equation representing 3dMVM model

Leehyun Yoon March 07, 2021 09:10PM

Re: Equation representing 3dMVM model

gang March 08, 2021 06:22PM

Re: Equation representing 3dMVM model

Leehyun Yoon March 12, 2021 10:00PM