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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January 15, 2021 05:08PM
Hello,

Removal on the mean of the motion parameters will have no effect on any beta of interest, as it will only affect the polort 0 betas (and stats), which almost no one ever looks at. Is that what you are concerned about?

Adding a constant term to any regressor, even per run, will have no effect any beta but the polort 0 ones. Well, more accurately, it would have no theoretical effect, though one might see *tiny* computational truncation differences.

- rick
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