PSYC 367 Lecture Notes - Winter 2018 Lecture 5 - Tectorial membrane, Aspirin, Vestibulocochlear nerve
Document Summary
Identify the structures in the outer, middle, and inner ears. Describe 2 ways in which the middle ear functions to amplify the sound pressure reaching the inner ear. Define the acoustic reflex and name the 2 muscles involved. Compare and contrast the anatomical arrangement, innervation and function of the inner and outer hair cells. Describe the transduction of mechanical energy into action potentials in the cochlea. Describe the response of the basilar membrane to sounds of different frequencies. Describe the 2 types of otoacoustic emissions and discuss how they are related to the active process that sharpens the mechanical tuning of the basilar membrane. Outer ear gathers sound energy and funnels it to the tympanic membrane (eardrum) Avg adult human ear canal = 25 mm long, 7 mm diameter. Shape of pinna helps with sound localization. Middle ear amplifies sound energy, protects inner ear from potentially harmful loud sounds.
