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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philippe goldin
September 23, 2003 12:39PM
Can someone elucidate the difference between and how to generate (I assume using 3dcalc) orthogonoal and non-orthogonal conjunction analysis maps for contrast A vs B and contrast C vs B (where B is a common comparison/baseline task, and A and C are different cognitive tasks). Because both contrasts involve the same comparison/baseline task B, I assume that there is a need to conduct an orthogonal conjunction analysis, and that orthogonal and non-orthogonal approaches will result in different results.

I thank you all in advance for advice and clarification.

philippe

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conjunction analysis

philippe goldin September 23, 2003 12:39PM

Re: conjunction analysis - Please comment if you've anything to add

Jim Eliassen September 29, 2003 01:27PM