Fig. 2.

Activity of LPFC predicted the GF strategy under long streaks. A stronger activation to feedback in the LPFC preceded a GF strategy in the next trial. The results (i.e., GF > WSLS) are overlaid on the (A) sagittal and axial slices of the group mean structural image. All activations were thresholded by using cluster detection statistics, with a height threshold of z > 2.3 and a cluster probability of P < 0.05, corrected for whole-brain multiple comparisons. (B) Plots of percentage signal change in left LPFC shows that it was specifically involved in the GF under a long streak, and was not sensitive to reward. Error bars denote within-subject error.