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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Gang Chen
March 11, 2010 10:44AM
A couple of questions:

(1) I see that you explicitly model rest as a regressor. Do you have baseline blocks in your experiment in addition to rest?

(2) Why not model before treatment and after treatment as two separate regressors?

(3) Since the measure seems at trial type level (not individual trial level), it seems to me you should NOT model the measure in individual subject analysis with -stim_times_AM2. Instead I'd use the measure as a covariate at group analysis level using 3dMEMA or 3dRegAna.

Gang
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Subject Author Posted

Covariance b/w variable and fmri data

Haisam March 09, 2010 10:38AM

Re: Covariance b/w variable and fmri data

Gang Chen March 09, 2010 10:46AM

Re: Covariance b/w variable and fmri data

Haisam March 10, 2010 05:50PM

Re: Covariance b/w variable and fmri data

Gang Chen March 11, 2010 10:44AM