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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smndpln
June 20, 2017 06:27AM
Dear AFNI experts,

Suppose an experimental design with 4 different conditions of a fast event-related paradigm.
Each condition is presented in a single separate run. So there are 4 runs and each run is paired with a unique condition.

Suppose to analyze data with a single GLM.
My question is: given the different baseline for each run, the result of general linear contrasts between conditions can not be trusted? Why, exactly?
Is this true also if we use 3dMVM to analyze data after 3dDeconvolve?

Thanks,
Simone
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Contrasting different runs (baseline problem)

smndpln June 20, 2017 06:27AM

Re: Contrasting different runs (baseline problem)

gang June 20, 2017 04:06PM