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Article: Humans use continuous visual feedback from the hand to control fast reaching movements

TitleHumans use continuous visual feedback from the hand to control fast reaching movements
Authors
Issue Date2003
PublisherSpringer Verlag. The Journal's web site is located at http://link.springer.de/link/service/journals/00221/index.htm
Citation
Experimental Brain Research, 2003, v. 152 n. 3, p. 341-352 How to Cite?
AbstractHow visual feedback contributes to the on-line control of fast reaching movements is still a matter of considerable debate. Whether feedback is used continuously throughout movements or only in the "slow" end-phases of movements remains an open question. In order to resolve this question, we applied a perturbation technique to measure the influence of visual feedback from the hand at different times during reaching movements. Subjects reached to touch targets in a virtual 3D space, with visual feedback provided by a small virtual sphere that moved with a subject's fingertip. Small random perturbations were applied to the position of the virtual fingertip at two different points in the movement, either at 25% or 50% of the total movement extent. Despite the fact that subjects were unaware of the perturbations, their hand trajectories showed smooth and accurate corrections. Detectable responses were observed within an average of 160 ms after perturbations, and as early as 60% of the distance to the target. Response latencies were constant across different perturbation times and movement speed conditions, suggesting that a fixed sensori-motor delay is the limiting factor. The results provide direct evidence that the human brain uses visual feedback from the hand in a continuous fashion to guide fast reaching movements throughout their extent.
Persistent Identifierhttp://hdl.handle.net/10722/168972
ISSN
2015 Impact Factor: 2.057
2015 SCImago Journal Rankings: 1.140
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorSaunders, JAen_US
dc.contributor.authorKnill, DCen_US
dc.date.accessioned2012-10-08T03:40:19Z-
dc.date.available2012-10-08T03:40:19Z-
dc.date.issued2003en_US
dc.identifier.citationExperimental Brain Research, 2003, v. 152 n. 3, p. 341-352en_US
dc.identifier.issn0014-4819en_US
dc.identifier.urihttp://hdl.handle.net/10722/168972-
dc.description.abstractHow visual feedback contributes to the on-line control of fast reaching movements is still a matter of considerable debate. Whether feedback is used continuously throughout movements or only in the "slow" end-phases of movements remains an open question. In order to resolve this question, we applied a perturbation technique to measure the influence of visual feedback from the hand at different times during reaching movements. Subjects reached to touch targets in a virtual 3D space, with visual feedback provided by a small virtual sphere that moved with a subject's fingertip. Small random perturbations were applied to the position of the virtual fingertip at two different points in the movement, either at 25% or 50% of the total movement extent. Despite the fact that subjects were unaware of the perturbations, their hand trajectories showed smooth and accurate corrections. Detectable responses were observed within an average of 160 ms after perturbations, and as early as 60% of the distance to the target. Response latencies were constant across different perturbation times and movement speed conditions, suggesting that a fixed sensori-motor delay is the limiting factor. The results provide direct evidence that the human brain uses visual feedback from the hand in a continuous fashion to guide fast reaching movements throughout their extent.en_US
dc.languageengen_US
dc.publisherSpringer Verlag. The Journal's web site is located at http://link.springer.de/link/service/journals/00221/index.htmen_US
dc.relation.ispartofExperimental Brain Researchen_US
dc.subject.meshAnalysis Of Varianceen_US
dc.subject.meshFeedback, Psychological - Physiologyen_US
dc.subject.meshHand - Physiologyen_US
dc.subject.meshHumansen_US
dc.subject.meshMovement - Physiologyen_US
dc.subject.meshPhotic Stimulation - Methodsen_US
dc.subject.meshPsychomotor Performance - Physiologyen_US
dc.titleHumans use continuous visual feedback from the hand to control fast reaching movementsen_US
dc.typeArticleen_US
dc.identifier.emailSaunders, JA:jsaun@hkucc.hku.hken_US
dc.identifier.authoritySaunders, JA=rp00638en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1007/s00221-003-1525-2en_US
dc.identifier.pmid12904935-
dc.identifier.scopuseid_2-s2.0-0141563602en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0141563602&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume152en_US
dc.identifier.issue3en_US
dc.identifier.spage341en_US
dc.identifier.epage352en_US
dc.identifier.isiWOS:000185346400008-
dc.publisher.placeGermanyen_US
dc.identifier.scopusauthoridSaunders, JA=7402341514en_US
dc.identifier.scopusauthoridKnill, DC=7003848696en_US
dc.identifier.citeulike401494-

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