BIO SCI 35 Study Guide - Midterm Guide: Tinnitus, Hearing Loss, Lawn Mower
31 Oct 2016
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BIO SCI 35 Full Course Notes
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Virbate at a fixed fequency - compressing air that produces wave that travels up to ear - decoded by our hearing sytem. The greater the compression, the greater the Human hearing ranges between 40 hz and 20000 hz. Bats emanates these chrips that reflect off their prey. The bat is listening for the returning soundwave. They have very high chirp range that even most creatures can"t hear. Listen to the echos without giving themselves away. Can here from accuracy down to 5 microns and localization accuracy of 1. 5 deg. Same as vision in our near periphery (30 degrees) During simulated echolocation in blind individuals, visual cortex is active. Blind invidividuals who navigate world learn how to activate visual cortex. Eardrum - interface that has bones that tramsit virbations that it senses. Cochlea - transform into auditory information. (fluid filled container) The gradation from stiff to flexible allows us to break down sounds into their constiutive pitches.
