Psychology 2220A/B Lecture 3: Biopsych Mar 8

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

Document Summary

Readings: chapter 7: pp 167-189 chapter 8: pp 192-200. Auditory system functions to create perception of objects or events by the sounds they make creates representations of the world for us in auditory space sounds are vibrations of air molecules that stimulate the auditory system humans only hear vibrations bw 20 20,000 hertz sounds are vibrations in a medium: air (voice creates compressions through the air, water, solids, we hear primarily through the medium of air. Tonotopic (frequency) organization of the basilar membrane and most other auditory system components: maximum deflection of that membrane will vary if its low or high frequency sound pitch is encoded depending on where hair cells are activated on the basilar membrane, high frequency vibrate near end high frequency vibrates slower, further away, vestibular system carries info about direction and intensity of head movements which help maintain our balance.