Hi and thank you.

Example 11b applies for my case, because I do not use freesurfer data, but a ROI that I created in AFNI (a NIFTI file). This ROI file is based on the anatomical MNI152 template (but only using the cerebral cortex, not the whole brain) and hence the same for every subject.

Based on my understanding, the code should then look as follows, correct?

-mask_import cc cerebral_cortex.nii \
-regress_ROI cc \

In this case, AFNI proc would take the "cerebral_cortex.nii" ROI file and apply GSR based only on the voxels within that ROI (instead of using all brain voxels to compute the global signal), is that correct?



Edited 1 time(s). Last edit at 05/23/2023 01:45PM by Philipp.