Differences in neural response to faces. (A) Social fearfulness was correlated with higher initial amplitudes to first face presentations in the hippocampus and vmPFC. (B) Social fearfulness was also correlated with higher b′ slope values between the third and fifth face exposure, indicating a slower rate of habituation, in the amygdala, hippocampus, vmPFC, mOFC, V1 and extrastriate cortex.