Final answer:
Kiang's data implies that the cochlea's tuning relies on the basilar membrane's location-specific vibration in response to different frequencies, and hair cells' optimal response to certain frequencies, which aligns with the place theory model of pitch perception.
Step-by-step explanation:
Kiang's physiology data suggests that the tuning of the cochlea is highly specialized for frequency discrimination, with the basilar membrane vibrating at specific locations depending on the frequency of the incoming sound waves. High frequencies cause vibrations near the base of the cochlea, while low frequencies elicit vibrations near the apex. This phenomenon is further refined by the hair cells, which respond optimally to specific frequencies and require greater intensity to fire outside of their most sensitive range. The detailed organization of hair cells on the basilar membrane, along with their response patterns, supports the place theory model, indicating that pitch perception is based on the location where these hair cells are activated.
This intricate system allows for a wide range of sound frequencies between 20 Hz and 20,000 Hz to be encoded by activating different hair cells along the cochlear duct, creating a comprehensive frequency map within the cochlea. Additional signal processing performed by the cilia and the connections between nerve cells enhances the cochlea's ability to resolve pitch before auditory information is sent to the brain. The cochlear nerve signals are then processed by the brain to produce perceptions such as the direction of the sound source and nuances in music appreciation.