PSYC 211 Lecture Notes - Lecture 10: Basilar Membrane, Tectorial Membrane, Eardrum

• School: McGill University
• Department: Psychology
• Course: PSYC 211
• Professor: Yogita Chaudasama

Document Summary

Ear does not mix or combine 2 different sound waves; hear original tones and the auditory system detects the complexity. Sound causes ear drum to vibrate and the vibrations are transferred to ossciles (middle ear - maleus, incus and the stapes). Cochlea (a part of the inner ear) receives vibrations via the membrane of the oval window. Sound transferred through air has to be transferred in a liquid medium. Hair cells= receptors (hair cells have extensions that are like cilia) Cillia connect hair cells from basilar membrane to tectorial membrane (they attach hair cell to tectorial membrane) Sound waves cause basilar membrane to move (causes cilia to bend moving back and forth will cause movement in the fluid which will enable tranduuction of auditory information *214-218. Info coming from one side goes to opposite hemisphere. Topography: features in organization of structure (ex for maps landscapes) Each individual sound will activiate many siesta long basilar membrane.