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
May 29, 2009 10:14AM
Lisa,

> I ran a RegAna where I had 4 predictors: group (2 levels), stimulus intensity
> (2 levels), age (continuous), and agexstimulus intensity (with the model 4 3 2
> 1: 0)... I ran a RegAna separately for each group with stimulus intensity and
> age as the predictors and the model statement 2 1: 0.

It's pretty tricky to code a within-subject factor such as stimulus intensity in 3dRegAna. A simple column with 0s and 1s is not good enough to account for across-subjects variability. So I would stay away from 3dRegAna when you have a within-subject factor.

I believe 3dLME is what you should try:

[afni.nimh.nih.gov]

Gang
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Subject Author Posted

RegAna question

Lisa Eyler May 28, 2009 08:30PM

Re: RegAna question

Gang Chen May 29, 2009 10:14AM

Re: RegAna question

Lisa Eyler June 02, 2009 12:04PM

Re: RegAna question

Gang Chen June 02, 2009 03:22PM