A transient period for enabling motion vision precedes the critical period for ocular dominance plasticity

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dc.contributor.authorSilver, Byron D.
dc.contributor.authorUniversity of Lethbridge. Faculty of Arts and Science
dc.contributor.supervisorPrusky, Glen
dc.date.accessioned2007-05-23T20:45:41Z
dc.date.available2007-05-23T20:45:41Z
dc.date.issued2005
dc.degree.levelMasters
dc.descriptionviii, 107 leaves : ill. (some col.) ; 28 cm.en
dc.description.abstractThe premise that mature visual function depends upon the nature of visual experience during development is based primarily on experiments showing that visual deprivation during a 'critical' period early in life causes abnormalities in visual cortex and an enduring loss of spatial vision (amplyopia). There is, however, little evidence that early visual experience atually enables mature vision. Experments in this thesis provide such evidence. The measurement of optomotor responses daily from eye opening permanently enhances optomotor sensitivity and the perception of visual motion. The plasticity allowing this enhancement is transient and peaks in efficacy before the start of the classical 'critical ' period for ocular dominance plasticity. The enhancement is dependent upon optomotor responses generated by the movement of high spatial frequency visual stimuli, and is mediated by the visual cortex. These studies show that a form of experience-dependent plasticity, distinct from that of the critical period, enables mature motion vision.en
dc.identifier.urihttps://hdl.handle.net/10133/287
dc.language.isoen_USen
dc.publisherLethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 2005en
dc.publisher.departmentDepartment of Neuroscience
dc.publisher.facultyArts and Science
dc.relation.ispartofseriesThesis (University of Lethbridge. Faculty of Arts and Science)en
dc.subjectDissertations, Academicen
dc.subjectMotion perception (Vision) -- Researchen
dc.subjectVisual cortiex -- Researchen
dc.subjectVision disorders -- Researchen
dc.titleA transient period for enabling motion vision precedes the critical period for ocular dominance plasticityen
dc.typeThesisen
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