Answer:
basilar membrane
Step-by-step explanation:
Auditory hair cells are auditory receptor cells that are present in the Corti organ, an important neurosensory structure for the processing of mechanical energy into electrical energy. In mammals, auditory hair cells are located in the Corti organ in a thin basilar membrane.
The outer hair cells have a rapid contraction capability - through contact and conduction of the inner hair cell stimulus with the tectorial membrane - to provide amplification of the sound stimulus.
Hair cells have a mechanical-electrical response that depends on the sound frequency and their position on the basilar membrane. Triggered by the vibrations of the perilymph, the mechanical vibrations cause the mechanical deflection of the stereocilia beam, which connect to each other and thus make the transduction. This transformation of sound vibration into a nervous message is carried to the brain where it will be interpreted.
In the stimulating phase of sound frequency, the outer hair cells (when the cochlea is active) cause rapid mechanical contractions, which determine the amplitude of basilar membrane vibration at a specific site of Corti's organ.