Psychology 2220A/B Lecture Notes - Lecture 7: Cochlea, Sound Localization, Cranial Nerves

• School: Western University
• Department: Psychology
• Course: Psychology 2220A/B
• Professor: Scott Mac Dougall- Shackleton

Document Summary

Hearing: the auditory system (7. 2, auditory perception and stream segregation (not in text in detail) Auditory cortex: auditory cortex is located in the temporal lobe, core region: includes primary cortex, belt surrounds the core region. A band of secondary cortex: secondary cortex outside the belt. Referred to as parabelt areas: about ten separate areas of secondary auditory cortex in primates. Organization of primate auditory cortex: functional columns (cells of a column respond to the same frequency, tonotopic organization, secondary areas do not respond well to pure tones, likely important for more complex features of sounds. Stimuli: still much to learn about dimensions of sounds processed in different parts of auditory cortex, challenge of using simple sound stimuli (tones) Easy to manipulate, but lack complex features that the cortex may be designed to process. Many cortical cells respond to vocalization sounds. Two streams of auditory cortex: auditory signals are conducted to two areas of association cortex.