| Project/Area Number |
07838040
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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 | 時限 |
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| Research Field |
咀嚼
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| Research Institution | NIHON UNIVERSITY |
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Principal Investigator |
NAKAJIMA Ichiro NIHON UNIVERSITY,SCHOOL OF DENTISTRY,ASSISTANT PROFESSOR, 歯学部, 講師 (90198078)
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| Co-Investigator(Kenkyū-buntansha) |
KIKUCHI Motohiro NIHON UNIVERSITY,SCHOOL OF DENTISTRY,ASSISTANT, 歯学部, 助手 (40277455)
AKASAKA Morito NIHON UNIVERSITY,SCHOOL OF DENTISTRY,PROFESSOR, 歯学部, 教授 (30059505)
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| Project Period (FY) |
1995 – 1996
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| Project Status |
Completed (Fiscal Year 1996)
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| Budget Amount *help |
¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 1996: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1995: ¥1,100,000 (Direct Cost: ¥1,100,000)
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| Keywords | CONTINGENT NEGATIVE VARIATION / JAW OPENING / COGNITIVE PREPARATION / ELECTROENCEPHALOGRAM / PREFRONTAL CORTEX / SUPPLEMENTARY MOTOR AREA / HUMAN / Contingent Negative Variation / Human / Jaw Opening / Supplementary Motor Area / Primary Motor Area / Prefrontal Cortex / 顎二腹筋 / ヒト |
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| Research Abstract |
Distribution of contingent negative variation (CNV) in a reaction-time jaw opening task was investigated in humans. Subjects were instructed to open their jaws irrespective of the kind of the visual stimuli in the go reaction-time motor task (simple task), or either in response to ont of two visual stimuli following a sound stimulus in the go/no-go reaction-time motor task (complex task). The CNVs were present at the midline-central area in both the simple and the complex tasks. The CNVs were absent af frontal placement while they were present at the bilateral temporal areas in the simple task. However, a contrary phenomenon was observed in the complex task. These results indicated that prefrontal cortex, but not primary motor cortex, was activated in order to discriminate between two visual stimuli in the complex task, suggesting that the CNV is not necessarily generated for the motor preparation.
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