Fig 3. Z-score brain surface map of representative cases shows a prominent metabolic reduction on respective gyrus level segment in cingulate gyrus.

Top, 46-year-old man (case 4) shows hypometabolism in anterior cingulate gyrus.

Middle, 38-year-old woman (case 7) shows hypometabolism in middle cingulate gyrus. Metabolic reduction shown in the right frontal lobe is the result of cerebral contusion.

Bottom, 28-year-old man (case 12) shows hypometabolism in posterior cingulate gyrus with concomitant hypometabolism of lingual gyrus and cuneus.