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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Jim Eliassen
January 13, 2004 03:40PM
Hi,

I'm not a statistician, but my take on the Friston/Worsley paper is that a conjunction is the presence of a main effect in the absence of an interaction. You might be able to achieve this by qualitatively satisfying these criteria in your analysis. You could look at only those voxels that show a main effect of some treatment and mask out the ones where the interaction term is significant.

There are a couple of threads previously. I just search the message board for "conjunction."

[afni.nimh.nih.gov]

-jim
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help! statisticians ...

Andrea Bozoki January 13, 2004 02:18PM

Re: conjunction analysis

Jim Eliassen January 13, 2004 03:40PM