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
March 04, 2014 09:34PM
> The output for each subject includes a test of the coefficient for each condition
> that I then take to an ANOVA. Does this coefficent (beta) test whether the fit for
> any subject/condition is different than ZERO or different than the BASELINE?

If you have a baseline condition (e.g., fixation) that is not included in those six conditions of interest, the answer is YES to both: each beta coefficient can be interpreted relative to zero as well as to the baseline. The reason is that the baseline is modeled as the intercept or constant in the regression equation.

Gang
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Subject Author Posted

test of coefficient; BLOCK in 3dDecon

mb March 04, 2014 02:43PM

Re: test of coefficient; BLOCK in 3dDecon

gang March 04, 2014 09:34PM

Re: test of coefficient; BLOCK in 3dDecon

mb March 05, 2014 01:15PM