Onitsuka T, Nestor PG, Gurrera RJ, Shenton ME, Kasai K, Frumin M, Niznikiewicz MA, McCarley RW
Am J Psychiatry 2005 Mar;162(3):599-601
OBJECTIVE: The authors examined the association between volume of the fusiform gyrus, a region involved in face processing, and the personality trait of extraversion in patients with schizophrenia.
METHOD: Male patients (N=24) and age-matched male comparison subjects (N=26) completed NEO Five-Factor Inventory personality measures of extraversion and underwent high-spatial-resolution magnetic resonance imaging of anterior and posterior fusiform gyrus gray matter.
RESULTS: Low extraversion scores were significantly correlated with gray matter volume reductions in the right posterior fusiform gyrus for patients but not comparison subjects.
CONCLUSIONS: Reduced right posterior fusiform gyrus volume may contribute to disease-related social disturbances, characterized by both low extraversion and reduced sensitivity to human faces.