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The hippocampus and its electrographic activity

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dc.contributor.author Hirschman GH en
dc.date.accessioned 2016-09-22T09:11:02Z
dc.date.available 2016-09-22T09:11:02Z
dc.date.created 1974 en
dc.date.submitted 1982 en
dc.identifier.uri http://hdl.handle.net/20.500.11892/45595
dc.description.abstract Presents a theoretical investigation of the functions of the hippocampus. Three theories are critically examined: the proposal that the hippocampus forms the neural substrate of Pavlovian internal inhibition, the suggestion that it serves as a "working memory" register, and the hypothesis that it functions as a cognitive map. The adequacy of the three theories is tested against anatomical, physiological and behavioural evidence, and it is concluded that only the inhibitory theory is internally consistent and able to accommodate the data. Further consideration of the anatomical and behavioural evidence suggests that the hippocampus gives rise to two separate circuits: a dorsal circuit, subserving the functions of internal inhibition, and a ventral circuit, mediating external inhibition. Sleep literature is briefly reviewed, and the common-sense notion that sleep is a time of rest for the brain is mooted. It is proposed that different neural circuits recuperate during different stages of sleep. There is an empirical study of the electroencephalographic activity of the hippocampus. It is found that theta, since it is present when the hippocampal pyramidal cells are quiescent, is unlikely to be a product of neural activity. The possibility that theta may be an artefact is explored. It is proposed that brain movement is an artefact-generator. en
dc.language English en
dc.subject Psychology en
dc.subject Physiological psychology en
dc.subject 010 Health sciences en
dc.title The hippocampus and its electrographic activity en
dc.type Doctoral degree en
dc.description.degree PhD en

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