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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October 25, 2016 09:09PM
> 1) If I use 3dRegAna or 3dTcorr1D, is it necessary to center my behavior measures? If so, why?

Perform centering only if you're interested in the intercept in this case.

> 2) If I use 3dttest++, why do I have to standardize both fmri and behavior measures?

No, you don't have to. If you really want to obtain correlation value, check out the link I provided.

Gang
Subject Author Posted

Correlating behavior measures with fmri data

mrif October 25, 2016 12:05PM

Re: Correlating behavior measures with fmri data

Peter Molfese October 25, 2016 12:26PM

Re: Correlating behavior measures with fmri data

gang October 25, 2016 12:40PM

Re: Correlating behavior measures with fmri data

AHM August 29, 2019 09:08AM

Re: Correlating behavior measures with fmri data

gang August 29, 2019 05:56PM

Re: Correlating behavior measures with fmri data

mrif October 25, 2016 04:22PM

Re: Correlating behavior measures with fmri data

gang October 25, 2016 09:09PM

Re: Correlating behavior measures with fmri data

Peter Molfese October 26, 2016 10:37AM

Re: Correlating behavior measures with fmri data

mrif October 28, 2016 04:48PM

Re: Correlating behavior measures with fmri data

bb2958 September 04, 2019 01:50PM

Re: Correlating behavior measures with fmri data

gang September 04, 2019 01:56PM

Re: Correlating behavior measures with fmri data

bb2958 September 04, 2019 02:25PM