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 Chen
July 06, 2009 11:59AM
> I'm confused about whether it is correct to do the ROI analysis on these
> activation maps or on the pre-fimmed functional datasets.

Different people mean ROI analysis in different things. If you simply want to plot out the ROI data, you can extract the data based on whatever way you prefer. However, if you want to run real statistical analysis on an ROI, some people argue that it's better to go with an independent definition of ROI from your activation map to avoid circularity issue, e.g., anatomical ROI or region from an independent study.

> Does it make sense to generate ROIs from a built-in atlas and then use
> 3dmaskave to perform the analysis on the tlrc'ed fims, or do I need to go back
> to the original files?

Built-in atlas seems fine to me.

Gang
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Subject Author Posted

ROI Analysis

Andrew DeMarco July 06, 2009 09:49AM

Re: ROI Analysis

Gang Chen July 06, 2009 11:59AM