title: Auditory oddball deficits in schizophrenia: an independent component analysis of the fMRI multisite function BIRN study.
abstract: Deficits in the connectivity between brain regions have been suggested to play a major role in the pathophysiology of schizophrenia. A functional magnetic resonance imaging (fMRI) analysis of schizophrenia was implemented using independent component analysis (ICA) to identify multiple temporally cohesive, spatially distributed regions of brain activity that represent functionally connected networks. We hypothesized that functional connectivity differences would be seen in auditory networks comprised of regions such as superior temporal gyrus as well as executive networks that consisted of frontal-parietal areas. Eight networks were found to be implicated in schizophrenia during the auditory oddball paradigm. These included a bilateral temporal network containing the superior and middle temporal gyrus; a default-mode network comprised of the posterior cingulate, precuneus, and middle frontal gyrus; and multiple dorsal lateral prefrontal cortex networks that constituted various levels of between-group differences. Highly task-related sensory networks were also found. These results indicate that patients with schizophrenia show functional connectivity differences in networks related to auditory processing, executive control, and baseline functional activity. Overall, these findings support the idea that the cognitive deficits associated with schizophrenia are widespread and that a functional connectivity approach can help elucidate the neural correlates of this disorder.
authors.affiliation: The Mind Research Network Institute, Albuquerque, NM 87131, USA. dkim@mrn.org
authors.forename: Dae Il
authors.initials: DI
authors.lastname: Kim
authors.forename: D H
authors.initials: DH
authors.lastname: Mathalon
authors.forename: J M
authors.initials: JM
authors.lastname: Ford
authors.forename: M
authors.initials: M
authors.lastname: Mannell
authors.forename: J A
authors.initials: JA
authors.lastname: Turner
authors.forename: G G
authors.initials: GG
authors.lastname: Brown
authors.forename: A
authors.initials: A
authors.lastname: Belger
authors.forename: R
authors.initials: R
authors.lastname: Gollub
authors.forename: J
authors.initials: J
authors.lastname: Lauriello
authors.forename: C
authors.initials: C
authors.lastname: Wible
authors.forename: D
authors.initials: D
authors.lastname: O'Leary
authors.forename: K
authors.initials: K
authors.lastname: Lim
authors.forename: A
authors.initials: A
authors.lastname: Toga
authors.forename: S G
authors.initials: SG
authors.lastname: Potkin
authors.forename: F
authors.initials: F
authors.lastname: Birn
authors.forename: V D
authors.initials: VD
authors.lastname: Calhoun
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001303:Auditory Cortex / Q000503:physiopathology*; D002540:Cerebral Cortex / Q000503:physiopathology; D003072:Cognition Disorders / Q000175:diagnosis / Q000209:etiology; D005260:Female; D005625:Frontal Lobe / Q000503:physiopathology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009415:Nerve Net / Q000503:physiopathology; D009483:Neuropsychological Tests; D010296:Parietal Lobe / Q000503:physiopathology*; D012559:Schizophrenia / Q000150:complications / Q000175:diagnosis* / Q000503:physiopathology*; D013702:Temporal Lobe / Q000503:physiopathology*; D013788:Thalamus / Q000503:physiopathology; D055815:Young Adult