| Project/Area Number |
09832002
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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 |
咀嚼
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| Research Institution | Niigata University |
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Principal Investigator |
KOBAYASHI Hiroshi Niigata University, school of dentistry, Associate Professor, 歯学部, 助教授 (00225533)
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| Co-Investigator(Kenkyū-buntansha) |
YAMADA Yoshiaki Niigata University, school of dentistry, Professor, 歯学部, 教授 (80115089)
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| Project Period (FY) |
1997 – 1998
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| Project Status |
Completed (Fiscal Year 1998)
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| Budget Amount *help |
¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 1998: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1997: ¥1,800,000 (Direct Cost: ¥1,800,000)
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| Keywords | magnetic stimulation / mastication / movement control / transcranial stimulation / central control mechanism |
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| Research Abstract |
The object of this study is to clarify the central control mechanism of the jaw movement by means of the magnetic stimulation to the central nerve system that will make disturbance to masticatory muscle activities.
(1) The Response of the Sternocleidomastoid muscle (SCM) with peripheral nerve stimulation : we observed ipsilateral response of the masseter muscle and the sternocleidomastoid muscle when stimulated at temporal part of the scull about 11cm lateral from vertex. The latency of the response was about 5ms. By the data we decided the response was the H reflex by the stimulation in the peripheral nerve other than the central cortex.
(2) The difference of the reaction of the SCM by changing the jaw position : The response of the SCM was changed by the jaw position. But, there were the other changing factors other than that We couldn't decide that the jaw position will change the reflex activity of the SCM or not.
(3) A test for the central control mechanism of the chewing movement by the robotic simulation : Using impedance control mechanism we simulated jaw open-close movement in an autonomous jaw robot. Its outcome implied that in the impedance control mechanism we would be able to simulate the magnetic transcranial stimulation in it.
(4) The central stimulation during chewing : We made magnetic stimulation when the subjects were chewing gum. The stimulation in the period of occluding phase was elicited the silent period after the stimulation and the duration of the muscle firing was prolonged.
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