Janelle explains that she can hear low pitched sounds, because the entire basilar membrane vibrates in unison at the same frequency. Which theory is Janelle describing?

frequency theory

Explanation:

From the information that has been provided in the question, the theory being described by Janelle is the frequency theory.

The frequency theory simply states that when a particular sound is heard by a person, information about the sound heard will be carried by pulses to the auditory nerve, so that the brain can process such sounds. It should be noted that the rate of the pulse would match the particular sound the person is hearing.

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