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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paulhami
March 06, 2015 09:31PM
Hi AFNI gurus,

Using 3dttest++ with a single array covariate (age) and a voxel-wise covariate (VBM-derived indices of grey matter volume) to compare depressed and non-depressed groups with respect to a novel DTI measure (center = SAME for both covariates), we observed a nice between-groups difference. To further understand this finding, what we'd like to do is pull the residuals (i.e., the DTI index once effects of age and VBM noise covariates have been addressed) for the cluster in which we found the between groups difference and correlate these residuals against some behavioral and cytokine data. I wonder, then, if you have a procedure you'd recommend for computing residual maps for individual subjects from which we could pull values?

Understood if this is not possible with current AFNI utilities.

All the best,

Paul



Edited 1 time(s). Last edit at 03/11/2015 11:32AM by rick reynolds.
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residuals from 3dttest++ using covariates

paulhami March 06, 2015 09:31PM

Re: residuals from 3dttest++ using covariates smileys with beer

gang March 07, 2015 03:18PM

Re: residuals from 3dttest++ using covariates smileys with beer

Emperor Zhark March 11, 2015 11:02AM

Re: residuals from 3dttest++ using covariates smileys with beer

paul.hamilton April 14, 2015 08:33PM

Re: residuals from 3dttest++ using covariates smileys with beer

paul.hamilton April 19, 2015 05:18PM