title: Evidence of altered cortical and amygdala activation during social decision-making in schizophrenia.
abstract: Impaired social cognition is a frequently observed and disabling characteristic of schizophrenia. An important aspect of social cognition involves making social decisions about others. The present study investigates whether brain activity related to social decision-making differs between patients with schizophrenia and healthy controls. Twelve patients with schizophrenia and 21 control subjects participated in the study. Behavioral performance and brain activity were assessed during a task that involved judging the trustworthiness of faces. We performed region-of-interest-based analyses, which revealed that patients with schizophrenia display specific increases and reductions in activation of the medial orbitofrontal cortex, amygdala and the right insula during social decision-making, areas that play key roles in the network that underlies social decisions. These findings suggest that the impairments in social cognition that are often observed in schizophrenia are, at least in part, related to altered brain activity in these areas.
authors.affiliation: Helmholtz Instituut, Department of Experimental Psychology, Universiteit Utrecht, PO Box 80125, 3508 TC, Utrecht, The Netherlands; Department of Psychiatry, University Medical Center Utrecht, The Netherlands. Electronic address: d.baas@fss.uu.nl.
authors.forename: Daan
authors.initials: D
authors.lastname: Baas
authors.affiliation: Helmholtz Instituut, Department of Experimental Psychology, Universiteit Utrecht, PO Box 80125, 3508 TC, Utrecht, The Netherlands; BCN Neuroimaging Center, University of Groningen, The Netherlands.
authors.forename: André
authors.initials: A
authors.lastname: Aleman
authors.affiliation: Department of Psychiatry, University Medical Center Utrecht, The Netherlands.
authors.forename: Matthijs
authors.initials: M
authors.lastname: Vink
authors.affiliation: Neurosurgery, Rudolf Magnus Institute of Neuroscience, University Medical Center Utrecht, The Netherlands.
authors.forename: Nick F
authors.initials: NF
authors.lastname: Ramsey
authors.affiliation: Helmholtz Instituut, Department of Experimental Psychology, Universiteit Utrecht, PO Box 80125, 3508 TC, Utrecht, The Netherlands.
authors.forename: Edward H F
authors.initials: EHF
authors.lastname: de Haan
authors.affiliation: Department of Psychiatry, University Medical Center Utrecht, The Netherlands.
authors.forename: René S
authors.initials: RS
authors.lastname: Kahn
mesh_terms: D000328:Adult; D000679:Amygdala / Q000502:physiology*; D002540:Cerebral Cortex / Q000502:physiology*; D003657:Decision Making / Q000502:physiology*; D005260:Female; D006801:Humans; D007398:Interpersonal Relations; D008279:Magnetic Resonance Imaging; D008297:Male