| Active control of bias for the control of posture and movement. | |
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MedLine Citation:
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PMID: 20538773 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Posture and movement are fundamental, intermixed components of motor coordination. Current approaches consider either that 1) movement is an active, anticipatory process and posture is a passive feedback process or 2) movement and posture result from a common passive process. In both cases, the presence of a passive component renders control scarcely robust and stable in the face of transmission delays and low feedback gains. Here we show in a model that posture and movement could result from the same active process: an optimal feedback control that drives the body from its estimated state to its goal in a given (planning) time by acting through muscles on the insertion position (bias) of compliant linkages (tendons). Computer simulations show that iteration of this process in the presence of noise indifferently produces realistic postural sway, fast goal-directed movements, and natural transitions between posture and movement. |
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Authors:
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Emmanuel Guigon |
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Publication Detail:
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Type: Journal Article Date: 2010-06-10 |
Journal Detail:
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Title: Journal of neurophysiology Volume: 104 ISSN: 1522-1598 ISO Abbreviation: J. Neurophysiol. Publication Date: 2010 Aug |
Date Detail:
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Created Date: 2010-08-16 Completed Date: 2010-12-01 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0375404 Medline TA: J Neurophysiol Country: United States |
Other Details:
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Languages: eng Pagination: 1090-102 Citation Subset: IM |
Affiliation:
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UPMC University, Paris 06, UMR 7222, ISIR, Paris, France. emmanuel.guigon@gmail.com |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Computer Simulation Feedback, Sensory / physiology* Hand / physiology Humans Models, Biological Movement / physiology* Muscle Contraction / physiology Nonlinear Dynamics Postural Balance Posture / physiology* Psychomotor Performance / physiology* Tendons / physiology Torque |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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