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dc.contributor.authorHammerbeck, Ulrike
dc.contributor.authorYousif, Nada
dc.contributor.authorGreenwood, Richard
dc.contributor.authorRothwell, John C
dc.contributor.authorDiedrichsen, Jörn
dc.date.accessioned2017-09-14T16:46:05Z
dc.date.available2017-09-14T16:46:05Z
dc.date.issued2014-01-01
dc.identifier.citationHammerbeck , U , Yousif , N , Greenwood , R , Rothwell , J C & Diedrichsen , J 2014 , ' Movement speed is biased by prior experience ' , Journal of Neurophysiology , vol. 111 , no. 1 , pp. 128-134 . https://doi.org/10.1152/jn.00522.2013
dc.identifier.issn0022-3077
dc.identifier.otherPURE: 10760313
dc.identifier.otherPURE UUID: 8e7a2b52-e495-4778-93f4-d10b48387bd2
dc.identifier.otherPubMed: 24133220
dc.identifier.otherScopus: 84891512032
dc.identifier.urihttp://hdl.handle.net/2299/19413
dc.description© 2013 The American Physiological Society. This is an Open Access article licensed under the Creative Commons Attribution license CC BY 3.0 https://creativecommons.org/licenses/by/3.0/deed.en_US which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
dc.description.abstractHow does the motor system choose the speed for any given movement? Many current models assume a process that finds the optimal balance between the costs of moving fast and the rewards of achieving the goal. Here, we show that such models also need to take into account a prior representation of preferred movement speed, which can be changed by prolonged practice. In a time-constrained reaching task, human participants made 25-cm reaching movements within 300, 500, 700, or 900 ms. They were then trained for 3 days to execute the movement at either the slowest (900-ms) or fastest (300-ms) speed. When retested on the 4th day, movements executed under all four time constraints were biased toward the speed of the trained movement. In addition, trial-to-trial variation in speed of the trained movement was significantly reduced. These findings are indicative of a use-dependent mechanism that biases the selection of speed. Reduced speed variability was also associated with reduced errors in movement amplitude for the fast training group, which generalized nearly fully to a new movement direction. In contrast, changes in perpendicular error were specific to the trained direction. In sum, our results suggest the existence of a relatively stable but modifiable prior of preferred movement speed that influences the choice of movement speed under a range of task constraints.en
dc.format.extent7
dc.language.isoeng
dc.relation.ispartofJournal of Neurophysiology
dc.subjectAdult
dc.subjectFemale
dc.subjectHumans
dc.subjectMale
dc.subjectMotor Skills
dc.subjectPractice (Psychology)
dc.subjectTask Performance and Analysis
dc.subjectTime Factors
dc.titleMovement speed is biased by prior experienceen
dc.contributor.institutionSchool of Physics, Engineering & Computer Science
dc.contributor.institutionDepartment of Engineering and Technology
dc.contributor.institutionCentre for Engineering Research
dc.contributor.institutionBioEngineering
dc.description.statusPeer reviewed
dc.identifier.urlhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC4527989/
rioxxterms.versionVoR
rioxxterms.versionofrecordhttps://doi.org/10.1152/jn.00522.2013
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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