PSY 1101 Lecture Notes - Lecture 10: Lisa Lopes, Optic Chiasm, Visual Cortex

• School: University of Ottawa
• Department: Psychology
• Course: PSY 1101
• Professor: Kenneth Campbell

Document Summary

Neuronal population throughout the auditory relay system (brainstem > thalamus > auditory cortex) do respond to very specific frequencies) Damage to basilar membrane will result in hearing loss to predictable frequencies. Low frequencies generate a general movement of the basilar membrane. We should therefore hear mixed frequencies, but we do not. Frequency theory cannot explain how higher frequencies are coded but place theory can. Place theory cannot explain how low frequencies are encoded, but frequency theory can. If the cochlea is destroyed, hearing is not possible. Consists of a microphone, a processor, a transmitter and receiver/stimulator, An electrode array (perhaps 20-50), collects the impulses from the stimulator and . Sends them to different regions of the auditory nerve. The sound the listener hears is not completely natural. Only a small number of electrodes not thousands. The sound processor send out a signal (pulse) If a stimulus intensity remains constant, our sensory receptors adapt to it.