2010 Fiscal Year Final Research Report
An effect of video-assisted motor imagery on the excitability of cerebral cortex and spinal anterior horn cells
| Project/Area Number |
20591745
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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 |
Orthopaedic surgery
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| Research Institution | Kochi University |
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Principal Investigator |
TANIGUCHI Shinichirou Kochi University, 教育研究部・医療学系, 講師 (00304676)
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| Co-Investigator(Kenkyū-buntansha) |
ISHIDA Kenji 高知大学, 教育研究部・医療学系, 准教授 (10274367)
USHIDA Takahiro 愛知医科大学, 医学部, 教授 (60304680)
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| Co-Investigator(Renkei-kenkyūsha) |
NAKAJIMA Noritsuna 高知大学, 医学部附属病院, 医員 (10457400)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 運動器リハビリテーション学 |
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| Research Abstract |
We studied an effect of video-assisted motor imagery on both cortical activities and spinal motor neuron excitabilities after the volitional relaxation of hand muscles using fMRI and F wave. Motor imagery suppressed the rest-induced reduction of spinal motoneuron excitabilites regardless of using video (visual-image) assistance. When F waves were recorded during motor imagery, the suppressive effect on rest-induced reduction of F-wave parameters were observed only after using video-assisted motor imagery. Cortical activities showed a reduction after volitional relaxation and motor imagery during volitional relaxation suppressed the reductive effect. In summary, motor imagery suppressed the rest-induced reduction in both of anterior-horn-cell and cortical excitabilities regardless of visual-image assistance. The results of this study may suggest that video-assisted motor imagery has an effect on keeping the response preparation on spinal motor neuron excitabilities.
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