Electrical network properties and distribution of potentials in the cat cochlea [Abstract]

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Author
Black, R. C.; Clark, Graeme M.Date
1978Source Title
Proceedings of the Australian Physiological and Pharmacological SocietyPublisher
Australian Physiological and Pharmacological SocietyUniversity of Melbourne Author/s
Clark, GraemeMetadata
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Black, R. C., & Clark, G. M. (1978). Electrical network properties and distribution of potentials in the cat cochlea [Abstract]. In Proceedings of the Australian Physiological and Pharmacological Society, Canberra, ACT.Access Status
Open AccessDescription
Twenty-ninth Meeting of Australian Physiological and Pharmacological Society , Canberra , 17-19 August 1978
This is an abstract of a paper from Twenty-ninth Meeting of Australian Physiological and Pharmacological Society, Canberra, 17-19 August 1978 published by Australian Physiological and Pharmacological Society. This version is reproduced with the permission of publisher.
Abstract
The-patterns of electrical resistance and capacitance in the cochlea formed by the anatomical organisation of the tissue structures and fluids are important in determining the distribution of electrical potentials which arise during normal acoustic stimulation (von Bekesy,1951). Cochlear potential distributions have in the past been measured by recording from the scalar fluids both the spread of cochlear microphonics and also potentials due to electrical stimulation. However, similar distributions in the hair cell-nerve ending region of the organ of Corti may not necessarily occur because of current shunting effects due to the electrical network patterns. To examine these current shunting effects, a three dimensional mathematical model of the electrical properties of the cat cochlea was constructed. This was formed from a two dimensional cochlear cross-section model similar to that proposed by Johnstone et al., (1966) for the guinea pig. Sixteen such sections were resistively coupled to form the three dimensional model. Results derived from this model predict that during electrical stimulation of the cochlea, the current in the organ of Corti region attenuates quite differently to the scalar voltage by a degree which depends on the stimulus electrode configuration.
Keywords
cat cochlea; otologyExport Reference in RIS Format
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- Graeme Clark Collection [896]