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  

Previous Message Next Message
Message List New Topic Print View
|
Marina Fernandez Alvarez
December 10, 2019 02:15AM
Thank you very much for your reply.

I think I didn't explain the question well. The real question is whether when doing a voxel-wise analysis (or PET or fMRI, not both in the same analysis) it is mandatory to introduce the ICV as a covariate of no interest in the statistical model (as in VBM studies , which is mandatory).

For example, if you want to compare the voxel-wise differences of ReHo between controls and Alzheimer's patients, is it necessary / mandatory to introduce the ICV as a variable of no interest?

Thank you very much in advance and sorry for the inconvenience.
Best regards,
Marina.
Reply Quote
RSS
Subject Author Posted

ICV as a covariate

Marina Fernandez Alvarez November 25, 2019 01:00PM

Re: ICV as a covariate

gang November 26, 2019 08:58AM

Re: ICV as a covariate

Marina Fernandez Alvarez December 10, 2019 02:15AM