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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Kai Schreiber
December 10, 2004 08:57PM
Hi everybody,

we have run an experiment with six conditions described by two factors, one with 3 and one with 2 possible values, and a baseline condition. We would now like to determine whether the response in each voxel is influenced by each of the factors.

So far I've been using a set of GLT's in 3dDeconvolve to do this, by comparing pairwise across the rows and columns of the stimulus matrix.

Now I just tried to use 3dANOVA2 to the same purpose, and am told that my sample size is too small for computing the F-interaction. What exactly does that error message refer to, and where am I going wrong?

Any input would be greatly appreciated.

Cheers,
Kai
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Subject Author Posted

3dANOVA2 within a subject?

Kai Schreiber December 10, 2004 08:57PM

Re: 3dANOVA2 within a subject?

Gang Chen December 10, 2004 11:22PM

Re: 3dANOVA2 within a subject?

Kai Schreiber December 12, 2004 07:26PM

Re: 3dANOVA2 within a subject?

Gang Chen December 12, 2004 10:46PM

Re: 3dANOVA2 within a subject?

Kai Schreiber December 13, 2004 09:31PM

Re: 3dANOVA2 within a subject?

Gang Chen December 14, 2004 11:31AM