2019 Fiscal Year Final Research Report
Modeling of motor control that alters body representations in brain
Project Area | Understanding brain plasticity on body representations to promote their adaptive functions |
Project/Area Number |
26120006
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Research Category |
Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
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Allocation Type | Single-year Grants |
Review Section |
Complex systems
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Research Institution | The University of Tokyo |
Principal Investigator |
Ota Jun 東京大学, 大学院工学系研究科(工学部), 教授 (50233127)
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Co-Investigator(Kenkyū-buntansha) |
青井 伸也 京都大学, 工学研究科, 講師 (60432366)
千葉 龍介 旭川医科大学, 医学部, 准教授 (80396936)
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Project Period (FY) |
2014-07-10 – 2019-03-31
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Keywords | 運動制御モデル / 脳内身体表現 / 筋シナジー / 起立姿勢制御 / 歩行制御 / fast dynamics / slow dynamics |
Outline of Final Research Achievements |
We developed posture and locomotion control models based on the muscle synergy. For the posture control of humans, we constructed a neural controller for postural control with muscular tonus from physiology. We conformed the validity of this model by simulations with musculoskeletal model against perturbations. We also developed a predictive simulator for alterations of postural strategies. We found that decrease of muscular tonus may be one of the reasons to generate hip strategy by aging. For the locomotion control, we developed fast and slow dynamics models by the reflex and learning, respectively, of muscle synergy. We performed forward dynamic simulation of split-belt treadmill walking by rat hindlimbs and found that the kinematics and muscle activities showed rapid change by environmental changes and then they slowly returned. There trends were observed both in our simulation and measured rat data, which suggests the validity of our fast and slow dynamics models in locomotion.
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Free Research Field |
システム工学
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Academic Significance and Societal Importance of the Research Achievements |
本研究課題ではヒトやラットを対象にした姿勢制御と歩行の短期的な適応のみならず長期的な変容までも数理モデル化することで、そのシステムの解明と応用を可能とした。学術的には従来モデル化されていない生理学的知見を用いた姿勢制御と感覚情報に基づいた筋シナジーによる歩行制御でモデルの妥当性を示した。また、これらのモデルを用いたシミュレーションにより長期的な変容を予測することも可能としたことは、リハビリテーションへの応用の観点から社会的意義も高い。これらは学会および一般向けセミナーでの招待講演を多く行ったことからも見て取れる。本研究課題の成果の書籍化により学術・社会双方に意義深いものとなった査証と言える。
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