Figure 2.

(A) Shown on the FreeSurfer average brain surface is a region of left vmPFC in which cortical thickness was correlated with conditioned fear expression during extinction recall. The peak vertex cluster significance threshold was reduced to P = 0.003 (uncorrected), and the cluster area threshold was removed in an attempt to replicate the previous finding by Milad et al. (2005). (B) Scatter plot depicting the relationship between the mean cortical thickness of the region shown in (A) and the extinction retention index from the extinction experiment.