The function of the outer hair cell in hearing is now perceived as that of a cochlear amplifier that refines the sensitivity and frequency selectivity of the mechanical vibrations of the cochlea.
Top: Rows of healthy sensory hair cells in the mouse inner ear with green stereocilia arcs. Middle: In Rest mutant mice, hair cells are disorganized, and stereocilia barely visible. Bottom ...
Hair cells are highly specialized cells, attached to be basement membrane in the organ of corti within the cochlea. They have hair-like protrusions (stereocilia) embedded in the tectorial membrane.