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

History of AFNI updates  

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July 07, 2009 03:23PM
Aaron,

Since this analysis about interaction, a negative beta or r means 3 possibilities:

(1) the seed region tends to reduce the context effect on the target region; or
(2) the context tends to reduce the effect of the seed region on the target region;
(3) both (1) and (2).

The analysis can't differentiate among the 3 possibilities. Applying to your situation, the context is just the weighted contrast, for example, 5nR, among those 7 conditions.

HTH,
Gang
Subject Author Posted

context-corr interpretation issues

Aaron Mattfeld July 06, 2009 03:17PM

Re: context-corr interpretation issues

Aaron Mattfeld July 06, 2009 03:19PM

Re: context-corr interpretation issues

Gang Chen July 06, 2009 10:22PM

Re: context-corr interpretation issues

Aaron Mattfeld July 07, 2009 02:10PM

Re: context-corr interpretation issues

Gang Chen July 07, 2009 03:23PM

Re: context-corr interpretation issues

Aaron Mattfeld July 07, 2009 03:47PM