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PSYCH 2E03 (70)
Lecture

the world of sound (2).docx

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Department
Psychology
Course
PSYCH 2E03
Professor
Gautam Ullal
Semester
Fall

Description
November 21 , 2012 Psych 2E03: Sensory Processes The World of Sounds (2) Function of ossicles - outer and middle ear are filled with air - inner ear is filled with fluid that is much denser than air - pressure changes in air transmit poorly into the denser medium - ossicles act to amplify the vibration for better transmission to the fluid - middle ear muscles dampen the ossicles’ vibrations to protect the inner ear from potentially damaging stimuli Muscles of the ossicles & the attenuation reflex - paralysis of stapedius Hyperacousis - increased sensitivity and intolerance to sounds within the normal range of amplitudes (occasionally
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