The perceived pitch of a sound depends on
A) which part of the tympanic membrane is being vibrated by sound waves.
B) which part of the oval window produces waves in the cochlear fluid.
C) which region of the basilar membrane was set in motion.
D) whether or not the sound moves the incus, malleus, and stapes.
E) the listener having had training in music.

Question

Quizplus · Accepted Answer

The basilar membrane is the structure responsible for detecting different frequencies of sound, with different regions of the basilar membrane reacting to different frequencies. Therefore, the region of the basilar membrane that is set in motion by a sound wave determines the perceived pitch of that sound. Choices A, B, and D are all related to the mechanics of the ear, but do not directly determine the perceived pitch of a sound. Choice E is not a factor in determining the perceived pitch of a sound as training in music may affect a person's ability to identify and distinguish different notes, but does not determine the actual pitch perceived.

The Perceived Pitch of a Sound Depends on