On action intent : behavioural correlates of reach-to-grasp actions

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dc.contributor.authorFlindall, Jason
dc.contributor.authorUniversity of Lethbridge. Faculty of Arts and Science
dc.contributor.supervisorGonzalez, Claudia L. R.
dc.contributor.supervisorKolb, Bryan
dc.date.accessioned2017-10-24T02:17:29Z
dc.date.available2017-10-24T02:17:29Z
dc.date.issued2017
dc.degree.levelPh.Den_US
dc.description.abstractEvidence from electrophysiology suggests that non-human primates produce reach-to-grasp movements based on their functional end-goal rather than on the biomechanical requirements of the movement. However, the invasiveness of direct-electrical stimulation and single-neuron recording studies have precluded analogous investigations in humans. In this thesis, I present behavioural evidence in the form of kinematic analyses suggesting that the cortical circuits responsible for reach-to-grasp actions in humans are organized in a similar fashion. Grasp-to-eat movements are produced with significantly smaller and more precise maximum grip apertures (MGAs) than are grasp-to-place movements directed toward the same objects, despite near identical mechanical requirements of the two subsequent (i.e., -eat and –place) movements. Furthermore, the fact that this distinction is limited to right-handed movements suggests that the system governing reach-to-grasp movements is asymmetric. I posit that this asymmetry may be responsible, at least in part, for the preponderance of right-hand dominance among the global population.en_US
dc.embargoNoen_US
dc.identifier.urihttps://hdl.handle.net/10133/4949
dc.language.isoen_USen_US
dc.proquest.subject0575en_US
dc.proquest.subject0317en_US
dc.proquest.subject0621en_US
dc.proquestyesYesen_US
dc.publisherLethbridge, Alta : University of Lethbridge, Dept. of Neuroscienceen_US
dc.publisher.departmentDepartment of Neuroscienceen_US
dc.publisher.facultyArts and Scienceen_US
dc.relation.ispartofseriesThesis (University of Lethbridge. Faculty of Arts and Science)en_US
dc.subjectkinematicsen_US
dc.subjectneuroscienceen_US
dc.subjectbehaviouren_US
dc.subjectgrasp-to-eaten_US
dc.subjectreach-to-graspen_US
dc.subjectasymmetriesen_US
dc.titleOn action intent : behavioural correlates of reach-to-grasp actionsen_US
dc.typeThesisen_US
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