Within the HIV+ group, graphs of the relationship between nadir CD4 count and a subset of the voxels in each of the clusters depicted in Figure 2 and Table 2.

The subset of voxels is the overlap between the clusters showing between-group task related functional differences and those clusters identified by the robust regression analysis conducted only within the HIV+ group. The black line is the robust regression line on the difference between risky and safe responses. The red and blue lines are robust regression lines of the safe and risky components of the black line. L, left; R, right; Inf, Inferior; Sup, Superior; Gy, Gyrus.