outer hair cell


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outer hair cell

sensory cells in the organ of Corti in synaptic contact with sensory as well as efferent fibers of the auditory nerve; there are three rows of columnar outer hair cells largely surrounded by cortilymph and supporting phalangeal cells; the apical end of each cell is anchored to the cuticular plate and about 100 stereocilia arranged in a "V" pattern extend from the cell's surface through the cuticular plate into the tectorial membrane.
See also: cochlear hair cells, Corti cells.
References in periodicals archive ?
Type 2 diabetes alters the functional status of outer hair cells in the cochlea.
Distortion-product otoacoustic emissions (DPOAE) are the sounds emitted by the outer hair cells of the cochlea in response to a pair of simultaneously presented pure-tone stimuli.
The Table summarizes the COMP-VA clinical objectives pertinent to identifying and monitoring changes in hearing and outer hair cell function (objectives 1-4, listed above).
It has been indicated that the most affected cells are the outer hair cells.
Sulfhydryl compounds and antioxidants inhibit cytotoxicity to outer hair cells of a gentamicin metabolite in vitro.
Different stimuli, both internal and external, are capable of producing a depolarization and contraction of the outer hair cells.
10) Radiation-induced vascular insufficiency has been regarded as the etiology of SNHL, while in animal models the exposure of inner ears to radiation resulted in destruction of outer hair cells and inner hair cells, atrophy of the stria vascularis and a reduced number of afferent nerve endings.
As outer hair cells become permanently damaged or nonfunctional, otoacoustic emissions provide greater accuracy and efficiency in predicting cochlear status than the audiogram.
With exposure to loud noise, the outer hair cells show a reduction in their ability to function, which may later recover.
Mice lacking FGF20 were missing about twothirds of their outer hair cells.
Scientists say they can now use the FGF20 gene profile to halt the loss of outer hair cells.
Mice lacking FGF20 were missing about two thirds of their outer hair cells.