The CNS Stochastically Selects Motor Plan Utilizing Extrinsic and Intrinsic Representations
Identifieur interne : 002931 ( Main/Exploration ); précédent : 002930; suivant : 002932The CNS Stochastically Selects Motor Plan Utilizing Extrinsic and Intrinsic Representations
Auteurs : Jindrich Kodl [Royaume-Uni] ; Gowrishankar Ganesh [Japon] ; Etienne Burdet [Royaume-Uni]Source :
- PLoS ONE [ 1932-6203 ] ; 2011.
Abstract
Traditionally motor studies have assumed that motor tasks are executed according to a single plan characterized by regular patterns, which corresponds to the minimum of a cost function in extrinsic or intrinsic coordinates. However, the novel via-point task examined in this paper shows distinct planning and execution stages in motion production and demonstrates that subjects randomly select from several available motor plans to perform a task. Examination of the effect of pre-training and via-point orientation on subject behavior reveals that the selection of a plan depends on previous movements and is affected by constraints both intrinsic and extrinsic of the body. These results provide new insights into the hierarchical structure of motion planning in humans, which can only be explained if the current models of motor control integrate an explicit plan selection stage.
Url:
DOI: 10.1371/journal.pone.0024229
PubMed: 21912679
PubMed Central: 3166292
Affiliations:
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xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Department of Bioengineering, Imperial College of Science, Technology and Medicine, South Kensington Campus, London</wicri:regionArea><placeName><settlement type="city">Londres</settlement><region type="country">Angleterre</region><region type="région" nuts="1">Grand Londres</region></placeName></affiliation></author><author><name sortKey="Ganesh, Gowrishankar" sort="Ganesh, Gowrishankar" uniqKey="Ganesh G" first="Gowrishankar" last="Ganesh">Gowrishankar Ganesh</name><affiliation wicri:level="1"><nlm:aff id="aff2"><addr-line>Advanced Information and Communications Technology Research Institute, National Institute of Information and Communications Technology, Kobe, Japan</addr-line></nlm:aff><country xml:lang="fr">Japon</country><wicri:regionArea>Advanced Information and Communications Technology Research Institute, National Institute of Information and Communications Technology, Kobe</wicri:regionArea><wicri:noRegion>Kobe</wicri:noRegion></affiliation><affiliation wicri:level="1"><nlm:aff id="aff3"><addr-line>Computational Neuroscience Laboratories, ATR International, Kyoto, Japan</addr-line></nlm:aff><country xml:lang="fr">Japon</country><wicri:regionArea>Computational Neuroscience Laboratories, ATR International, Kyoto</wicri:regionArea><wicri:noRegion>Kyoto</wicri:noRegion></affiliation></author><author><name sortKey="Burdet, Etienne" sort="Burdet, Etienne" uniqKey="Burdet E" first="Etienne" last="Burdet">Etienne Burdet</name><affiliation wicri:level="3"><nlm:aff id="aff1"><addr-line>Department of Bioengineering, Imperial College of Science, Technology and Medicine, South Kensington Campus, London, United Kingdom</addr-line></nlm:aff><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Department of Bioengineering, Imperial College of Science, Technology and Medicine, South Kensington Campus, London</wicri:regionArea><placeName><settlement type="city">Londres</settlement><region type="country">Angleterre</region><region type="région" nuts="1">Grand Londres</region></placeName></affiliation></author></analytic><series><title level="j">PLoS ONE</title><idno type="eISSN">1932-6203</idno><imprint><date when="2011">2011</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p>Traditionally motor studies have assumed that motor tasks are executed according to a single plan characterized by regular patterns, which corresponds to the minimum of a cost function in extrinsic or intrinsic coordinates. However, the novel via-point task examined in this paper shows distinct planning and execution stages in motion production and demonstrates that subjects randomly select from several available motor plans to perform a task. Examination of the effect of pre-training and via-point orientation on subject behavior reveals that the selection of a plan depends on previous movements and is affected by constraints both intrinsic and extrinsic of the body. These results provide new insights into the hierarchical structure of motion planning in humans, which can only be explained if the current models of motor control integrate an explicit plan selection stage.</p></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Bernstein, Na" uniqKey="Bernstein N">NA Bernstein</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Morasso, P" uniqKey="Morasso P">P Morasso</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Osu, R" uniqKey="Osu R">R Osu</name></author><author><name sortKey="Burdet, E" uniqKey="Burdet E">E Burdet</name></author><author><name sortKey="Franklin, Dw" uniqKey="Franklin D">DW Franklin</name></author><author><name sortKey="Milner, Te" uniqKey="Milner T">TE Milner</name></author><author><name sortKey="Kawato, M" uniqKey="Kawato M">M Kawato</name></author></analytic></biblStruct><biblStruct><analytic><author><name 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Crespi</name></author><author><name sortKey="Ryczko, D" uniqKey="Ryczko D">D Ryczko</name></author><author><name sortKey="Cabelguen, Jm" uniqKey="Cabelguen J">JM Cabelguen</name></author></analytic></biblStruct></listBibl></div1></back></TEI><affiliations><list><country><li>Japon</li><li>Royaume-Uni</li></country><region><li>Angleterre</li><li>Grand Londres</li></region><settlement><li>Londres</li></settlement></list><tree><country name="Royaume-Uni"><region name="Angleterre"><name sortKey="Kodl, Jindrich" sort="Kodl, Jindrich" uniqKey="Kodl J" first="Jindrich" last="Kodl">Jindrich Kodl</name></region><name sortKey="Burdet, Etienne" sort="Burdet, Etienne" uniqKey="Burdet E" first="Etienne" last="Burdet">Etienne Burdet</name></country><country name="Japon"><noRegion><name sortKey="Ganesh, Gowrishankar" sort="Ganesh, Gowrishankar" uniqKey="Ganesh G" first="Gowrishankar" last="Ganesh">Gowrishankar Ganesh</name></noRegion><name sortKey="Ganesh, Gowrishankar" sort="Ganesh, Gowrishankar" 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