> I then correlated these values with the covariate (within each group) to obtain an estimate of the slope.
Did you run those 7 voxels for each group with 3dttest++ or some other program?
> My issue is that, for one group only, when I did this I obtained slightly different values (difference ranging
> in magnitude from .0036-.0042) than what I get from running 3dmaskdump with the same voxels on
> sub-brick #10 (slope of setB wrt covariate) of the 3dttest++ (and also from pinpointing the voxels in the AFNI GUI).
Just to clarify: Are you comparing the results of the 7 voxels for one specific group with the 3dttest++ output for two groups?
Gang
