The ion that diffuse into the tips of the bent stereocilia, leading to excitation of the hair cell during sound transduction is potassium ion.
The sensory transduction in the cochlea and vestibular labyrinth depends on the fluid movement that deflects the hair bundle of stereocilia. This process relies on ion gradient channel to inner ear.
The ear detects sound waves, which are pressure variation in air. Sound enters from the outer ear and sets the tympanic membrane in motion. The motions are conducted from outer ear to middle ear by oval window through ear ossicles.
Due to the mechanical properties of the basilar membrane, the active amplification mechanism mediated by electromotile properties, that travel wave peaking at dominant frequencies.
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