PSYC 212 Lecture Notes - Lecture 15: Interaural Time Difference, Cochlear Implant, Tinnitus

• School: McGill University
• Department: Psychology
• Course: PSYC 212
• Professor: Mathieu Roy

Document Summary

Def: an arrangement in which neurons that respond to different frequencies are organized anatomically in order of frequency. Audiology -- evaluating audition: hearing loss can either be caused by loss of sound conduction to the cochlea or damage to it [check past lecture] Defined by the perception of sound in the absence of sound waves. E. g. ringing or constant buzz in their ear. Mostly frequency sound, for some people it does not go away. May not seem that severe but having that sound constantly can cause a lot of stress and trouble with sleeping. Prevalence increases with age, probably because men are more exposed to loudness at work than women. One leading hypothesis is that following hearing loss, the brainstem increases the "gain" in auditory pathways to compensate, which also amplifies "neural noise", thereby causing tinnitus. You can simulate the effects of sound on the cochlea by directly stimulating nerves.