The functional neuroanatomy of social behaviour: changes in cerebral blood flow when people with autistic disorder process facial expressions.
Critchley HD, Daly EM, Bullmore ET, Williams SC, Van Amelsvoort T, Robertson DM, Rowe A, Phillips M, McAlonan G, Howlin P, et al. Brain. 2000 Nov; 123 ( Pt 11):2203-12.