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  

|
January 04, 2021 06:07PM
Hello everyone:

I'm looking for help/input for ways to handle GLM design matrix regarding zscore and censor operations.
In the way our team understands, we see in it that AFNI applies the censoring to the fMRI data after subtracting the mean from baseline columns which are our 6 motion parameters. In this case, we don't have our columns centered around zero. We compared with data from computing zscore on our baseline parameters beforehand and it seems 3Ddeconvolve handles the matrix differently giving a non-zero centered matrix.

Any insight on how AFNI orders these operations using 3dREMLfit /3dDeconvolve would be appreciated.
Also, is this something where we can use any existing option to apply censor operation before/after the matrix adjustment?

Thanks!
Subject Author Posted

3dDeconvolve/3dREMLfit - censoring options & Zscoring the GLM matrix

Suja January 04, 2021 06:07PM

Re: 3dDeconvolve/3dREMLfit - censoring options & Zscoring the GLM matrix

gang January 10, 2021 10:47AM

Re: 3dDeconvolve/3dREMLfit - censoring options & Zscoring the GLM matrix

Suja January 14, 2021 10:07AM

Re: 3dDeconvolve/3dREMLfit - censoring options & Zscoring the GLM matrix

rick reynolds January 15, 2021 05:08PM