Final answer:
The temporal theory and place theory both contribute to our ability to perceive the pitch of sound waves with frequencies up to 4000 Hz.
Step-by-step explanation:
The perception of pitch is influenced by two theories: the temporal theory and the place theory. The temporal theory states that the frequency of a sound wave is coded by the activity level of a sensory neuron. In contrast, the place theory suggests that different frequencies are detected based on the specific location of the hair cells in the inner ear that are stimulated by the sound waves. Both theories play a role in our ability to perceive the pitch of sound waves with frequencies up to 4000 Hz, with the temporal theory being more prominent at lower frequencies and the place theory being more prominent at higher frequencies.