title: Association of fronto-temporal function with cognitive ability in schizophrenia.
abstract: Deficits in neuropsychological performance are common in schizophrenia, but their relationship with the fronto-temporal functional abnormalities associated with this condition remains unclear. We explored the relationship between neuropsychological performance as measured using the Brief Assessment of Cognition in Schizophrenia (BACS) and the Social Cognition Screening Questionnaire theory of mind (ToM) subscale and fronto-temporal function in 23 patients with schizophrenia and 23 age- and gender-matched healthy controls (HCs), using 52-channel near-infrared spectroscopy (NIRS). Regional hemodynamic changes were significantly smaller in the schizophrenia group than in the HCs group in the ventro-lateral prefrontal cortex and the anterior part of the temporal cortex (VLPFC/aTC) and dorso-lateral prefrontal cortex and frontopolar cortex (DLPFC/FPC) regions. To dissect the effect of variance in BACS cognitive domains from the relationship between ToM function and fronto-temporal function, we performed additional partial correlation analyses between ToM and NIRS data, using BACS composite score as a control variable. The correlation between ToM and NIRS data remained significant only in the DLPFC/FPC region. This finding is important to models of recovery, as it suggests that intervention programs focusing on enhancing fronto-temporal function may have a greater impact on social and occupational outcomes than traditional rehabilitation programs focusing on neuropsychological performance.
authors.affiliation: Division of Neuropsychiatry, Department of Brain and Neuroscience, Tottori University Faculty of Medicine: 36-1 Nishi-cho, Yonago, Tottori 683-8504, Japan.
authors.forename: Shenghong
authors.initials: S
authors.lastname: Pu
authors.affiliation: National Center of Neurology and Psychiatry: 4-1-1 Ogawa-Higashi, Kodaira, Tokyo 187-8551 Japan.
authors.forename: Kazuyuki
authors.initials: K
authors.lastname: Nakagome
authors.affiliation: Division of Neuropsychiatry, Department of Brain and Neuroscience, Tottori University Faculty of Medicine: 36-1 Nishi-cho, Yonago, Tottori 683-8504, Japan.
authors.forename: Masashi
authors.initials: M
authors.lastname: Itakura
authors.affiliation: Division of Neuropsychiatry, Department of Brain and Neuroscience, Tottori University Faculty of Medicine: 36-1 Nishi-cho, Yonago, Tottori 683-8504, Japan.
authors.forename: Masaaki
authors.initials: M
authors.lastname: Iwata
authors.affiliation: Division of Neuropsychiatry, Department of Brain and Neuroscience, Tottori University Faculty of Medicine: 36-1 Nishi-cho, Yonago, Tottori 683-8504, Japan.
authors.forename: Izumi
authors.initials: I
authors.lastname: Nagata
authors.affiliation: Division of Neuropsychiatry, Department of Brain and Neuroscience, Tottori University Faculty of Medicine: 36-1 Nishi-cho, Yonago, Tottori 683-8504, Japan.
authors.forename: Koichi
authors.initials: K
authors.lastname: Kaneko
mesh_terms: D000328:Adult; D003071:Cognition; D005260:Female; D006801:Humans; D008297:Male; D009483:Neuropsychological Tests; D017397:Prefrontal Cortex / Q000503:physiopathology*; D011569:Psychiatric Status Rating Scales; D012559:Schizophrenia / Q000503:physiopathology*; D012565:Schizophrenic Psychology; D019265:Spectroscopy, Near-Infrared; D055815:Young Adult