Haptic foundations for visually guided action

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dc.contributor.authorKarl, Jenni M.
dc.contributor.supervisorWhishaw, Ian Q.
dc.date.accessioned2014-10-03T20:13:03Z
dc.date.available2014-10-03T20:13:03Z
dc.date.issued2014-10-03
dc.degree.levelPh.Den_US
dc.description.abstractPrehension is proposed to consist of two movements mediated by separate neural pathways – a Reach transports the hand to the target while a Grasp shapes the hand for target purchase – but under vision the two movements appear as a seemless act. The purpose of the present thesis was to examine prehension under conditions of limited visual feedback. Removing vision in adults caused prehension to decompose into an open handed Reach followed by a haptically mediated Grasp, suggesting that haptics also access the Reach and Grasp pathways. That Grasp, but not Reach, formation is equally accurate under haptic versus visual control indicates that the sensory control of the two movements can be differentiated. Finally, young infants perform haptic Reach and Grasp movements before integrating them together under vision. These results suggest that the Reach and the Grasp, with their requisite neural pathways, originate under haptic control with secondary access by vision.en_US
dc.description.sponsorshipAIHS, NSERCen_US
dc.identifier.urihttps://hdl.handle.net/10133/3504
dc.language.isoen_CAen_US
dc.proquest.subject0317en_US
dc.proquest.subject0989en_US
dc.proquest.subject0384en_US
dc.proquestyesYesen_US
dc.publisherLethbridge, Alta. : University of Lethbridge, Dept. of Neuroscience.
dc.publisher.departmentNeuroscienceen_US
dc.publisher.facultyArts and Scienceen_US
dc.relation.ispartofseriesThesis (University of Lethbridge. Faculty of Arts and Science)
dc.subjecthaptic control
dc.subjectneural pathways
dc.subjectprehension
dc.subjectReach and Grasp
dc.subjectvisual control
dc.subjectvisual feedback
dc.titleHaptic foundations for visually guided actionen_US
dc.typeThesisen_US
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