Dissociation of gaze anchoring in real and pantomime reach-to-grasp

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dc.contributor.authorKuntz, Jessica R.
dc.contributor.authorUniversity of Lethbridge. Faculty of Arts and Science
dc.contributor.supervisorWhishaw, Ian Q.
dc.contributor.supervisorDoan, Jon B.
dc.date.accessioned2018-12-20T23:02:59Z
dc.date.available2018-12-20T23:02:59Z
dc.date.issued2018
dc.degree.levelMastersen_US
dc.description.abstractPrehension consists of two temporally integrated components, a reach and a grasp, each mediated by distinct neural networks. Under visual control, the reach transports the hand to the target while the grasp simultaneously shapes the hand for target purchase. When prehension is performed from memory, as occurs in pantomime, the kinematics of the movement are altered. It is posited that real actions are primarily mediated via the dorsal vision-for-action stream and that pantomime actions are mediated via the ventral vision-for-perception stream. The purpose of the present thesis was to examine components of prehension under conditions of altered cues by monitoring gaze-point and hand kinematics. Removal of cues lead to the dissociation of the reach and grasp such that when the extrinsic properties were present and remained unchanged a real reach was performed with a pantomime grasp. Thus, the reach and grasp, have separate flexible mechanisms by which they can be mediated.en_US
dc.description.sponsorshipNSERCen_US
dc.embargoNoen_US
dc.identifier.urihttps://hdl.handle.net/10133/5264
dc.language.isoen_USen_US
dc.proquest.subject0317en_US
dc.proquestyesYesen_US
dc.publisherLethbridge, Alta. : Universtiy of Lethbridge, Department of Neuroscienceen_US
dc.publisher.departmentDepartment of Neurosceinceen_US
dc.publisher.facultyArts and Scienceen_US
dc.relation.ispartofseriesThesis (University of Lethbridge. Faculty of Arts and Science)en_US
dc.subjectVisual perception -- Physiological aspectsen_US
dc.subjectGazeen_US
dc.subjectMotion perception (Vision)en_US
dc.subjectSomatosensory cortexen_US
dc.subjectSpace perception -- Physiological aspectsen_US
dc.subjectPerceptual-motor processesen_US
dc.subjectMuscular senseen_US
dc.subjectHand -- Movementsen_US
dc.subjectTouch -- Psychological aspectsen_US
dc.subjectVisualizationen_US
dc.subjectgaze anchoringen_US
dc.subjecthapsis-proprioceptionen_US
dc.subjectpantomimeen_US
dc.subjectreach-to-graspen_US
dc.subjectsomatosensory systemen_US
dc.subjectvisual attentionen_US
dc.subjectDissertations, Academicen_US
dc.titleDissociation of gaze anchoring in real and pantomime reach-to-graspen_US
dc.typeThesisen_US
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