Voxel-wise correlation between the MPFC and the somatization subscale scores of SCL-90 in the patients.Sagittal view of the voxel-wise correlation analysis between z values of the voxels within the the bilateral superior MPFC (Montreal Neurological Institute coordinates: x = −4, y = 42, z = 52) and the somatization subscale scores of SCL-90 in the patient group at 0.05 significance level (combined height threshold p<0.01 and a minimum cluster size = 52). MPFC = medial prefrontal cortex; somatization subscale of SCL-90 = somatization subscale of the Symptom Check List.