Fig. 3.

The main effect of predictability showed that reward-related regions had a greater BOLD response to the unpredictable stimuli. A, Planes centered at (0, 4, −4) show that bilateral nucleus accumbens/ventral striatum (NAC) and bilateral superior parietal cortex were more active in the predictable condition. B, A small region in the right superior temporal gyrus was relatively more activated by the predictable stimuli. Significance was thresholded atp < 0.001 and an extent >10 contiguous voxels.