PSYCH 2E03 Lecture Notes - Tectorial Membrane, Basilar Membrane, Parvalbumin
12 Jun 2013
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Document Summary
Organ of corti resting on the basilar membrane. Basilar membrane vibrates in response to sound and supports the organ of corti inner and outer hair cells are the receptors for hearing tectorial membrane extends over the hair cells. The organ of corti transduction takes place by: Cilia bending in response to movement of organ of cort and the tectorial membrane. Movement in one direction opens ion channels. Movement in the other direction closes the channels this causes bursts of electrical signals. Innervation pattern of inner hair cell (ihc) & outer hair cell (ohc) Whereas ihc has afferent sensory innervation, ohc has afferent (sensory) as well as efferent (motor) innervation. Muscle inside a hair cell (outer hair cell) Prestin contractile protein immunolocalized in the cell membrane of outer hair cells. Prestin the ultra-fast contractile protein in the cell membrane of outer hair cells.
