Sensory weighting of force and position feedback in human motor control tasks.
Identifieur interne : 004135 ( Main/Merge ); précédent : 004134; suivant : 004136Sensory weighting of force and position feedback in human motor control tasks.
Auteurs : Winfred Mugge [Pays-Bas] ; Jasper Schuurmans ; Alfred C. Schouten ; Frans C T. Van Der HelmSource :
- The Journal of neuroscience : the official journal of the Society for Neuroscience [ 1529-2401 ] ; 2009.
English descriptors
- KwdEn :
- MESH :
- methods : Photic Stimulation.
- physiology : Feedback, Posture, Proprioception, Psychomotor Performance, Sensory Thresholds.
- Adolescent, Humans, Male, Young Adult.
Abstract
In daily life humans integrate force and position feedback from mechanoreceptors, proprioception, and vision. With handling relatively soft, elastic objects, force and position are related and can be integrated to improve the accuracy of an estimate of either one. Sensory weighting between different sensory systems (e.g., vision and proprioception) has been extensively studied. This study investigated whether similar weighting can be found within the proprioceptive sensory system, more specifically between the modalities force and position. We hypothesized that sensory weighting is governed by object stiffness: position feedback is weighted heavier on soft objects (large deflections), while force feedback is weighted heavier on stiff objects (small deflections). Subjects were instructed to blindly reproduce either position or force while holding a one degree of freedom haptic manipulator that simulated a linear spring with one of four predetermined stiffnesses. In catch trials the spring was covertly replaced by a nonlinear spring. The difference in force (DeltaF) and position (DeltaX) between the regular and the catch trials revealed the sensory weighting between force and position feedback. A maximum likelihood estimation model predicted that: (1) task instruction did not affect the outcome measures, and (2) force feedback is weighted heavier with increasing object stiffness as was hypothesized. Both effects were found experimentally, and the subjects' sensory weighting closely resembled the optimal model predictions. To conclude, this study successfully demonstrated sensory weighting within the proprioceptive system.
DOI: 10.1523/JNEUROSCI.0116-09.2009
PubMed: 19403815
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pubmed:19403815Le document en format XML
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Schouten</name></author><author><name sortKey="Van Der Helm, Frans C T" sort="Van Der Helm, Frans C T" uniqKey="Van Der Helm F" first="Frans C T" last="Van Der Helm">Frans C T. Van Der Helm</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2009">2009</date><idno type="doi">10.1523/JNEUROSCI.0116-09.2009</idno><idno type="RBID">pubmed:19403815</idno><idno type="pmid">19403815</idno><idno type="wicri:Area/PubMed/Corpus">001286</idno><idno type="wicri:Area/PubMed/Curation">001286</idno><idno type="wicri:Area/PubMed/Checkpoint">001052</idno><idno type="wicri:Area/Ncbi/Merge">001131</idno><idno type="wicri:Area/Ncbi/Curation">001131</idno><idno type="wicri:Area/Ncbi/Checkpoint">001131</idno><idno type="wicri:Area/Main/Merge">004135</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Sensory weighting of force and position feedback in human motor control tasks.</title><author><name sortKey="Mugge, Winfred" sort="Mugge, Winfred" uniqKey="Mugge W" first="Winfred" last="Mugge">Winfred Mugge</name><affiliation wicri:level="1"><nlm:affiliation>Department of BioMechanical Engineering, Delft University of Technology, 2628 CD Delft, The Netherlands. w.mugge@tudelft.nl</nlm:affiliation><country xml:lang="fr">Pays-Bas</country><wicri:regionArea>Department of BioMechanical Engineering, Delft University of Technology, 2628 CD Delft</wicri:regionArea><wicri:noRegion>2628 CD Delft</wicri:noRegion></affiliation></author><author><name sortKey="Schuurmans, Jasper" sort="Schuurmans, Jasper" uniqKey="Schuurmans J" first="Jasper" last="Schuurmans">Jasper Schuurmans</name></author><author><name sortKey="Schouten, Alfred C" sort="Schouten, Alfred C" uniqKey="Schouten A" first="Alfred C" last="Schouten">Alfred C. Schouten</name></author><author><name sortKey="Van Der Helm, Frans C T" sort="Van Der Helm, Frans C T" uniqKey="Van Der Helm F" first="Frans C T" last="Van Der Helm">Frans C T. Van Der Helm</name></author></analytic><series><title level="j">The Journal of neuroscience : the official journal of the Society for Neuroscience</title><idno type="eISSN">1529-2401</idno><imprint><date when="2009" type="published">2009</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adolescent</term><term>Feedback (physiology)</term><term>Humans</term><term>Male</term><term>Photic Stimulation (methods)</term><term>Posture (physiology)</term><term>Proprioception (physiology)</term><term>Psychomotor Performance (physiology)</term><term>Sensory Thresholds (physiology)</term><term>Young Adult</term></keywords><keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Photic Stimulation</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Feedback</term><term>Posture</term><term>Proprioception</term><term>Psychomotor Performance</term><term>Sensory Thresholds</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adolescent</term><term>Humans</term><term>Male</term><term>Young Adult</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">In daily life humans integrate force and position feedback from mechanoreceptors, proprioception, and vision. With handling relatively soft, elastic objects, force and position are related and can be integrated to improve the accuracy of an estimate of either one. Sensory weighting between different sensory systems (e.g., vision and proprioception) has been extensively studied. This study investigated whether similar weighting can be found within the proprioceptive sensory system, more specifically between the modalities force and position. We hypothesized that sensory weighting is governed by object stiffness: position feedback is weighted heavier on soft objects (large deflections), while force feedback is weighted heavier on stiff objects (small deflections). Subjects were instructed to blindly reproduce either position or force while holding a one degree of freedom haptic manipulator that simulated a linear spring with one of four predetermined stiffnesses. In catch trials the spring was covertly replaced by a nonlinear spring. The difference in force (DeltaF) and position (DeltaX) between the regular and the catch trials revealed the sensory weighting between force and position feedback. A maximum likelihood estimation model predicted that: (1) task instruction did not affect the outcome measures, and (2) force feedback is weighted heavier with increasing object stiffness as was hypothesized. Both effects were found experimentally, and the subjects' sensory weighting closely resembled the optimal model predictions. To conclude, this study successfully demonstrated sensory weighting within the proprioceptive system.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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