At low frequencies (e.g., below 50 hertz), the entire basilar membrane deforms almost equally, posing a problem for the place theory of pitch. What other mechanism accounts for our ability to sense these low-frequency sounds?
A) the frequency of neural impulse firing
B) the dilation of the inner ear
C) the activation of the semicircular canals
D) all of the above

Question

Quizplus · Accepted Answer

At low frequencies, the neural impulses firing rate plays a greater role in our ability to sense pitch than the physical location of the sound waves on the basilar membrane, which is the basis of the place theory. The firing rate of auditory neurons is directly correlated with the frequency of the sound waves, allowing us to discern pitch even when the entire membrane is uniformly stimulated. The dilation of the inner ear and activation of the semicircular canals are not directly related to our ability to sense low-frequency sounds.

At Low Frequencies (E