question about mask in alff

Submitted by fish on

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

YAN Chao-Gan

Tue, 09/29/2015 - 02:31

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