The precise localization of sound vibration along the basilar membrane reflects

Question

Quizplus · Accepted Answer

The contractile capacity of outer hair cells is responsible for the precise localization of sound vibration along the basilar membrane. Outer hair cells can change their length in response to electrical signals sent by the brain, which influences the stiffness of the basilar membrane and amplifies the vibrations of the inner hair cells. This process of amplification is crucial for the perception of soft sounds and the discrimination of different frequencies. The loss of outer hair cells due to the aging process or exposure to noise can lead to hearing impairment and reduced frequency sensitivity. Choices A, C, and E are incorrect because they do not accurately reflect the mechanism of tonotopic mapping in the cochlea.

The Precise Localization of Sound Vibration Along the Basilar Membrane