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dc.contributor.supervisor McDonald, Robert J.
dc.contributor.author Balog, Robert J.
dc.contributor.author University of Lethbridge. Faculty of Arts and Science
dc.date.accessioned 2017-02-23T21:19:44Z
dc.date.available 2017-02-23T21:19:44Z
dc.date.issued 2016
dc.identifier.uri https://hdl.handle.net/10133/4783
dc.description.abstract An environmental context can be represented as a collection of individual features, or as a conjunction of elements combined by relational associations formed within the hippocampus. Separating out different experiences and then retrieving the correct representation becomes more challenging when cue elements start to overlap or become degraded. I designed a series of highly ambiguous context discrimination tasks based on sensory features including olfaction, vision, and geometric shape. Normal rats were able to discriminate highly ambiguous contexts defined by olfactory cues, visual cues, and certain geometric shapes. Rats with hippocampal lesions were impaired in the olfactory and visual task, and showed enhanced performance on the geometric shape task. In a final experiment, I demonstrated that rats learned a novel pattern separation/completion task that utilized olfactory information as the retrieval cue. These studies suggest that in context discriminations, some features are more important than others and this influences hippocampal involvement. en_US
dc.language.iso en_US en_US
dc.publisher Lethbridge, Alta : University of Lethbridge, Dept. of Neuroscience en_US
dc.relation.ispartofseries Thesis (University of Lethbridge. Faculty of Arts and Science) en_US
dc.subject neuroscience en_US
dc.subject hippocampus en_US
dc.subject context discrimination en_US
dc.subject pattern completion en_US
dc.title Effects of cue type and overlap in context conditioning : the role of the hippocampus en_US
dc.type Thesis en_US
dc.publisher.faculty Arts and Science en_US
dc.publisher.department Department of Neuroscience en_US
dc.degree.level Masters en_US
dc.proquest.subject 0317 en_US
dc.proquest.subject 0384 en_US
dc.proquest.subject 0623 en_US
dc.proquestyes Yes en_US
dc.embargo No en_US


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