Fig. 2.

Gaze manipulation increased the activation of the hippocampus and the OFC. The contrast between the response cycles of the initial and final choice phase showed activations in the left hippocampus (A, −22, −12, −20) and the right OFC (B, 24, 30, −16). ROI analysis showed that these regions were activated only in the Changed Choice trials (C, D). These two regions were considered to play an important role in face attractiveness judgment. White arrows indicate the peak voxels in the hippocampus (A) and the OFC (B). White bars are Firm Choice, and black bars are Changed Choice trials. To define the activated regions, a statistical threshold at P < 0.005 (uncorrected) was used. Each peak voxel was used as the center of 4-mm radius spherical ROI. Error bars mean SEM; *P < 0.05. All MRI data are from the Main Manip. group.