Juan,

> 1) Does 3dtttest++ program accept datasets that are modified by 3dcalc? How should I modify it?
> In my case, the PATH is also inserted.

The functionality with 3dcalc in the link you provided is for 3dttest, a precursor of 3dttest++. As you've found out, 3dttest++ probably does not work properly with that embedded 3dcalc command yet.

> 2) Now I try to compare the "[Brick (1) + Brick (3)]*0.5" and "Brick (5)". Should I go back to redo
> the 3dDeconvolve, by collapsing the regressor 1 and regressor 2 (i.e., they are corresponding
> to the Brick (1) and (3) here) as one regressor? Would the results be different? I assume it
> should be the same. Am I correct?

No, you don't need to obtain the combination with 3dDeconvolve. Instead 3dcalc should be good enough for your purpose.

Alternatively (and probably better) you can treat Bricks 1, 3 and 5 as three levels of a within-subject factor, and run a one-way within-subject ANOVA with 3dANOVA2 -type 3. And specify the contrast of "[Brick (1) + Brick (3)]*0.5" vs "Brick (5)" with option -acontr in 3dANOVA2.

Gang



Edited 2 time(s). Last edit at 08/30/2016 01:37PM by Gang.