2022 Fiscal Year Final Research Report
Functional coupling of environment-mind-posture in virtual reality: postural threat and habituation
| Project/Area Number |
19H03982
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Review Section |
Basic Section 59010:Rehabilitation science-related
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| Research Institution | Jobu University |
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Principal Investigator |
Ida Hirofumi 上武大学, ビジネス情報学部, 教授 (20392194)
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| Co-Investigator(Kenkyū-buntansha) |
竹内 成生 上武大学, ビジネス情報学部, 教授 (10329162)
関口 浩文 山梨大学, 大学院総合研究部, 教授 (20392201)
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| Project Period (FY) |
2019-04-01 – 2023-03-31
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| Keywords | 立位バランス / ヴァーチャルリアリティ / 予測性・代償性姿勢調節 / 経頭蓋磁気刺激 / 姿勢性恐怖 |
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| Outline of Final Research Achievements |
The project was aimed to elucidate the neurophysiological relationship between postural threat and standing balance in virtual reality (VR) by comparing it with physical reality (PR). It was shown that VR elicited greater activation of tibialis anterior for anticipatory postural adjustments (APAs) than PR during a single-leg swing task, revealing the environmental effect of postural internal perturbation. In the response of tibialis anterior to transcranial magnetic stimulation (TMS) during a quiet stance, the maximum slope of the recruitment curve of motor evoked potentials was smaller in VR than PR, suggesting a modulation effect in corticospinal excitability. As for compensatory postural adjustments (CPAs) in response to a releasing postural perturbation, although environmental effects of VR were not detected, there was a height effect, in which the activity of medial gastrocnemius was greater at the high condition than the low one.
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| Free Research Field |
バイオメカニクス
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| Academic Significance and Societal Importance of the Research Achievements |
学術的には，筋運動生理学的測定（APAs-CPAs）や電気生理学的測定（TMS）を導入し，VR環境とそれと相同させたPR環境との比較をとおして，仮想現実の環境効果を解明しようとするところに意義がある．発展的には，VRにおける環境-心理-姿勢の機能的連結について，より多くの神経生理学的議論の契機となることが見込まれる．また，TMSを利用したVR環境効果の検証はほぼ未開拓といえ，この学術領域で世界をリードする研究成果の公開につながる．一方社会的な意義としては，次世代のVRトレーニング開発に向けて客観的な機能情報を提供することにより，臨床応用的なインパクトが期待される．
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