Dear AFNI experts,
Hope everyone is staying safe and healthy. I am trying to use the basal forebrain mask in the SPM Anatomy Toolbox mask as a seed mask for the resting state analysis in AFNI. I downloaded the mask from the SPM webpage and converted the SPM mask to the standard MNI using @ShiftVolume -MNI_Anat_to_MNI.
I tried this earlier which showed a mask in the first attached screenshot. I was trying to redo it today and it shows a completely different mask (the second screenshot). Could you please let me know why this happened? I think the first one should be correct since the basal forebrain is a very small region. Thank you in advance for your help.