2001 Fiscal Year Final Research Report Summary
The effect of somatosensory evoked potentials on the onset of voluntary movement
| Project/Area Number |
12680036
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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 |
体育学
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| Research Institution | The University of Tokushima |
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Principal Investigator |
ARAKI Hideo Faculty of Integrated Liberal Arts and Sciences, The University of Tokushima, Professor, 総合科学部, 教授 (90151159)
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| Project Period (FY) |
2000 – 2001
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| Keywords | voluntary movement / SEPs / gating |
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| Research Abstract |
The purpose of the study was to investigate the sequential changes of somatosensory evoked potentials (SEPs) accompanying voluntary movement, in comparison of self-voluntary movement and CNV-paradigm. The SEPs, Movement related cortical potentials and CNVs were recorded through the epoch preceding and accompanying movement of right thumb. Cerebral N20 and N18 were investigated according to the temporal relationship between the onset of movement and 7 epoch (500 msec) set by computer under the condition of stimulating the median nerve of right wrist. SEPs were recorded in 16 (experimental (1)) and 18 (experimental (2)) subjects and averaged in 7 successive epochs extending from 2.0 sec before onset of EMG to 0.5 sec after offset of EMG. The attenuation of both N20, i.e, gating, were clearly observed in epoch pre- and post-movement and was greatest in the epoch during movement, but that of N18 was not clear (experimental (1)). The change of N20 elicited by stimulating central nerve was different from that of N18. However, the difference between both components was not shown under the condition of stimulairig cutanuous (experimental (2)). From these findings, the gating is considered to be reflected the changes of afferent information processing at not central level but peripheral sites.
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Research Products
(2 results)
