The Effects of Target-Distractor Competition on the Oculomotor System

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dc.contributor.advisorFallah, Mazyar
dc.contributor.authorGiuricich, Caroline Elizabeth
dc.date.accessioned2021-11-15T15:53:03Z
dc.date.available2021-11-15T15:53:03Z
dc.date.copyright2021-08
dc.date.issued2021-11-15
dc.date.updated2021-11-15T15:53:03Z
dc.degree.disciplineKinesiology & Health Science
dc.degree.levelMaster's
dc.degree.nameMSc - Master of Science
dc.description.abstractWe use our eyes to investigate the world around us and decide what we want to act on. In a crowded scene, we direct our gaze to a single object of interest to gather more information about it. We do this effortlessly, but the underlying neural circuitry is complex. In this thesis, I look at temporal, spatial, and object identity factors that feed into the oculomotor system to drive eye movements in a target selection task. We varied the distance and similarity of complex objects to examine the effects of target-distractor competition on saccade trajectories and pupil size. We found that the effects of distance and similarity on saccade trajectories depended on the development of target-distractor competition. However, these factors did not modulate pupil size. Overall, these findings show that information processed in higher order visual areas is projected to the oculomotor system for saccade planning but not pupillary control.
dc.identifier.urihttp://hdl.handle.net/10315/38773
dc.languageen
dc.rightsAuthor owns copyright, except where explicitly noted. Please contact the author directly with licensing requests.
dc.subjectNeurosciences
dc.subject.keywordssaccades
dc.subject.keywordssaccade curvature
dc.subject.keywordssaccade competition
dc.subject.keywordstarget selection
dc.subject.keywordssurround suppression
dc.subject.keywordssaccadic reaction time
dc.subject.keywordsoculomotor system
dc.subject.keywordsvisual system
dc.subject.keywordsvisual processing
dc.subject.keywordseye movements
dc.titleThe Effects of Target-Distractor Competition on the Oculomotor System
dc.typeElectronic Thesis or Dissertation

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