Dear Dr.Yan,
Could I bother you a basic question ? When I was doing ALFF, the mask should be the graymask I made based on the subjects, or be the one-sample t-test? Because the result between the two methods is a little different. The second question is that if I regress out the graymatter volume from the alff, what the mask should I put into?
Best
Fish
Forums
Hi Fish,
Hi Fish,
I would use the graymask based on the subjects, as more areas are examined. You mean using gray matter volume as a regressor at group level analysis? I think the graymask based on the subjects is a good choice.
Best,
Chao-Gan