PNB 2XB3 Lecture Notes - Lecture 6: Auditory Cortex, Olivary Body, Stapes

• School: McMaster University
• Department: Psychology, Neuroscience & Behaviour
• Course: PNB 2XB3
• Professor: Daniel Goldreich

Document Summary

Voltage-gated ca2+ channels are open when the surround cones are depolarized. Can think of it as a function of time at any one place it moves up and down, but is still moving to the right: pitch is associated with frequency (tone of sound) We"re better at left-right localization of sound: can compare the loudness of the sound in the two ears (interaural loudness difference, can also compare the time it takes for a sound to reach one ear over another. Pinna (external part of the ear) thought to help funnel sound waves into the external auditory canal: sound hits tympanic membrane after traveling through external auditory canal. Eardrum vibrates back and forth at the requency of the sound wave. Ear drum separates external ear from internal ear. Malleus connected to ear drum, it connects to incus, and incus connects to stapes. Stapes hits the oval window oval window is a membrane in the bony structure called the cochlea.