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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Marina Fernandez Alvarez
March 24, 2020 07:42AM
Dear experts,

I would like to run a functional connectivity ROI-to-ROI analysis with AFNI (first level analysis).

First, I would extract the mean value of the seed-ROI in each subject.
Then, I would calculate FC between these seed-ROI values and the 250 EPI volumes masked by the target-ROI.

Should I use the 250 EPI volumes that are masked by the target-ROI with smoothing?
Or is it better to do the correlation with these volumes without smoothing?

And finally, to be sure, I shouldn't apply smoothing before calculating the mean values of the seed-ROI, right?

Thank you in advance!
Best regards,
Marina
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Smoothing in functional connectivity analysis

Marina Fernandez Alvarez March 24, 2020 07:42AM

Re: Smoothing in functional connectivity analysis

ptaylor March 24, 2020 03:22PM