Physiology-10

With increasing age, it is quite common for
adults to have very low sensitivity for highpitch
sounds. Which of the following physiologic
responses occur as the pitch of a sound is
increased at constant sound pressure?
(A) a greater number of hair cells become
activated
(B) the amplitude of maximal basilar membrane
displacement increases
(C) the frequency of action potentials in
auditory nerve fibers increases
(D) the location of maximal basilar membrane
displacement moves toward the
cochlear base
(E) units in the auditory nerve become
responsive to a wider range of sound
frequencies

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