Sanae Hatada1, Ken Sawada2, Masanori Akamatsu1, Erina Doi3, Masayoshi Minese3, Motoshi Yamashita4, Allen E Thornton5, William G Honer6, Shimpei Inoue1. 1. Department of Neuropsychiatry, Aizu Medical Center, Fukushima Medical University, Fukushima, Japan. 2. Department of Neuropsychiatry, Aizu Medical Center, Fukushima Medical University, Fukushima, Japan Department of Psychiatry, University of British Columbia, Vancouver, BC, Canada Kochi Prefectural Aki General Hospital, Kochi, Japan. 3. Kochi Prefectural Aki General Hospital, Kochi, Japan. 4. Kochi Health Sciences Center, Kochi, Japan. 5. Department of Psychology, Simon Fraser University, Burnaby, BC, Canada. 6. Department of Psychiatry, University of British Columbia, Vancouver, BC, Canada.
Abstract
BACKGROUND: Assessment of the musical ability of people with schizophrenia has attracted little interest despite the diverse and substantive findings of impairments in sound perception and processing and the therapeutic effect of music in people with the illness. The present study investigated the musical ability of people with schizophrenia and the association with psychiatric symptoms and cognition. METHODS: We recruited patients with chronic schizophrenia and healthy controls for participation in our study. To measure musical ability and cognitive function, we used the Montreal Battery of Evaluation of Amusia (MBEA) and the Brief Assessment of Cognition in Schizophrenia (BACS). We carried out a mediation analysis to investigate a possible pathway to a deficit in musical ability. RESULTS: We enrolled 50 patients and 58 controls in the study. The MBEA global score in patients with schizophrenia was significantly lower than that in controls (p < 0.001), and was strongly associated with both the composite cognitive function score (r = 0.645, p < 0.001) and the negative symptom score (r = -0.504, p < 0.001). Further analyses revealed direct and indirect effects of negative symptoms on musical ability. The indirect effects were mediated through cognitive impairment. LIMITATIONS: The relatively small sample size did not permit full evaluation of the possible effects of age, sex, education, medication and cultural influences on the results. CONCLUSION: Examining the associations between musical deficits, negative symptoms and cognitive imapirment in patients with schizophrenia may identify shared biological mechanisms.
BACKGROUND: Assessment of the musical ability of people with schizophrenia has attracted little interest despite the diverse and substantive findings of impairments in sound perception and processing and the therapeutic effect of music in people with the illness. The present study investigated the musical ability of people with schizophrenia and the association with psychiatric symptoms and cognition. METHODS: We recruited patients with chronic schizophrenia and healthy controls for participation in our study. To measure musical ability and cognitive function, we used the Montreal Battery of Evaluation of Amusia (MBEA) and the Brief Assessment of Cognition in Schizophrenia (BACS). We carried out a mediation analysis to investigate a possible pathway to a deficit in musical ability. RESULTS: We enrolled 50 patients and 58 controls in the study. The MBEA global score in patients with schizophrenia was significantly lower than that in controls (p < 0.001), and was strongly associated with both the composite cognitive function score (r = 0.645, p < 0.001) and the negative symptom score (r = -0.504, p < 0.001). Further analyses revealed direct and indirect effects of negative symptoms on musical ability. The indirect effects were mediated through cognitive impairment. LIMITATIONS: The relatively small sample size did not permit full evaluation of the possible effects of age, sex, education, medication and cultural influences on the results. CONCLUSION: Examining the associations between musical deficits, negative symptoms and cognitive imapirment in patients with schizophrenia may identify shared biological mechanisms.
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