Psychology 1000 Lecture Notes - Lecture 11: Visual Cortex, Limbic System, Olfactory Bulb

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Mark Holden

Document Summary

Hearing damage at 90db (with prolonged exposure) pain at ~120db. Death (in rats) with prolonged exposure to 150db. Cochlea spiral shaped coil that is filled with fluid organ of corti rests on top of basilar membrane one the bottom of the cochlea: organ of corti contains 16 000 receptors (auditory hair cells) Conduction deafness any type of deafness caused by damage to the mechanical system (up to the hair cells : e. g. puncture ear drum; damage to ossicles; damage to the cochlea, often can be treated with hearing aids. Nerve deafness any type of damage involving neurons (including the hair cells: caused by aging, disease, exposure to loud sounds, typically, cannot be treated (only prevented) 1. frequency theory sound waves have a certain frequency. Maybe the nerve hair cells fire at that same frequency: problem: neurons can only fire so fast, yet we hear sounds up to 4000hz.