Lecture25 - BioNB222 Cornell University Spring 2008 Carl D....

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BioNB222 Spring 2008 Cornell University Carl D. Hopkins 1 Lecture 25. Hearing The auditory system is a sensory marvel, a mechanical device of great complexity that evolved to sense the slightest motion of the eardrum in a sound field. How does the ear do this complex job? How is the sound encoded, filtered and interpreted by the peripheral sensory structures, by the brainstem, and in the cortex? Reading Assignment Purves et al. (2007), Chapter 13. Learning Objectives Students should be able to explain: 1) How the ear converts sound pressure into a mechanical stimulus suitable for the fluid environment of the inner ear. 2) How the transduction of hearing works. 3) How the cochlea is a series of tuned filters and WHY . 4) How complex sounds are represented in the brain. 5) How sound is localized. Lecture Outline 1) Basic Acoustics What is Sound? How do you build a sound sensor? Particle motion detector Pressure receiver 2) Mechanics and the function of external and middle ear.
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This note was uploaded on 04/30/2008 for the course BIO 2220 taught by Professor Hopkins,c.d. during the Spring '08 term at Cornell University (Engineering School).

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Lecture25 - BioNB222 Cornell University Spring 2008 Carl D....

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