2002 Fiscal Year Final Research Report Summary
Study of Automatic Information Processing of Background Sound and Speech in Schizophrenic Patients with auditory Hallucination
| Project/Area Number |
12670920
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Psychiatric science
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| Research Institution | Hirosaki University |
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Principal Investigator |
YABE Hirooki Hirosaki University, School of Medicine, Associate Professor, 医学部, 助教授 (60210316)
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| Co-Investigator(Kenkyū-buntansha) |
KAKIGI Ryusuke National Institute of Physiological Sciences, Professor, 生理学研究所, 教授 (10145196)
KOYAMA Sachiko National Institute of Physiological Science, Instructor, 生理学研究所, 助手 (40270483)
ABE Yoshinao Hirosaki University, School of Medicine, Professor, 医学部, 教授 (10167950)
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| Project Period (FY) |
2000 – 2002
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| Keywords | MMN / mismatch negativity / temporal window of integration / Schizophrenia / sensory memory / attention / sensory memory / 注意 |
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| Research Abstract |
Mismatch negativity (MMN) component of the event-related brain potentials (ERPs) reflects the memory process related to the automatic information processing. On the other hand, several studies indicated that deficits of cognitive function in schizophrenia were also reflected in the impaired generation of MMN. We reported the automatic discriminative sensitivity inside the sensory memory as reflected by Temporal Window of Integration (TWI) (2001,2002,2004), as a function of time (2005). We also reported the interplay of auditory streaming and temporal integration, organizing sound sequences in the brain (2001,2003), evolving the spectrotemporal window of integration of auditory information (2003). We found that the transient gamma-band response should be dissociated from sensory memory as reflected by MMN (in press). We showed a small symmetrical negativity of the early contingent negative variation (CNV) by using a somatosensory paradigm (2002). Also, our CNV study revealed the impairment in activation of a frontal attention-switch mechanism in schizophrenic patients (2004). We reported the differential effects of the hiba odor on CNV and MMN (2002,2001). We found the difference in mismatch negativity between the acute and post-acute phase of schizophrenia (2002,2002). By studying MMN in speech, we showed the cortical evidence of the perceptual backward masking effect on speech sounds (2003). In the symposium of the international MMN conference (MMN2000, Barcerona), we presented the integrative functions of auditory sensory memory in schizophrenia.
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Research Products
(31 results)
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[Journal Article] 統合失調症(旧精神分裂病)における不随意的注意メカニズムの障害について-N1,MMN,P3a成分ならびにRTを指標として2003
Author(s)
佐藤泰治, Carles Escera, 矢部博興, 篠崎直子, 晝間臣治, 須藤武行, 梨田忠良, 石山哲, 松岡貴志, 兼子直
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Journal Title
Description
「研究成果報告書概要(和文)」より
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[Journal Article] Clinical and psychophysiological effects of hiba odour.2002
Author(s)
Hiruma T, Yabe H, Sato Y, Shinozaki N, Sutoh T, Nashida T, Matsuoka T, Itai T, Amayasu H, Kawamura N, Momose A, Uematsu W, Kaneko S
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Journal Title
Focus on Alternative and complementary Therapies 7
Pages: 96
Description
「研究成果報告書概要(欧文)」より
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[Book] Clinical and psychophysiological effects of hiba odour.2002
Author(s)
Hiruma T, Yabe H, Sato Y, Shinozaki N, Sutoh T, Nashida T, Matsuoka T, Itai T, Amayasu H, Kawamura N, Momose A, Uematsu W, Kaneko S
Total Pages
96
Publisher
Focus on Alternative and Complementary Therapies 7
Description
「研究成果報告書概要(和文)」より
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