By What Means Do We Perceive the Pitch of a High-Frequency

question 24

Multiple Choice

By what means do we perceive the pitch of a high-frequency sound (such as 10,000 Hz) ?

• A) A sound wave of a particular frequency (such as 10,000 Hz) excites that many hair cells (10,000).
• B) Each hair cell sends one impulse for each sound wave.
• C) A sound wave of a particular frequency excites hair cells at a particular location along the basilar membrane.
• D) Each sound wave excites a group, or volley, of hair cells.

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Definitions:

Vestibular Sense

The sensory system located in the inner ear that regulates balance and spatial orientation.

Primary Auditory Cortex

The region of the brain located in the temporal lobe that is responsible for processing auditory information.

Sensory Information

Data received by the sensory organs, such as eyes and ears, and processed by the brain.

Parietal Lobe

A region of the cerebral cortex involved in processing sensory information from various parts of the body, understanding spatial orientation, and managing language and mathematics.