PSYC 3505 Lecture 9: Lecture 9
23 Feb 2016
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Document Summary
Learners who are deaf or hard of hearing. Outer ear, transformation of acoustic energy to mechanical energy then . Mechanical energy is transferred to osccles, oval window, is put into the cochlea. (main receptor organ for hearing). 2 fluid filled cavities, then moves the fluid within the cochlea, and the small hairs in the cochlea, turn that into . Eardrum and bones that conduct vibrations of the eardrum. Mechanisms for balance and transmission of electrical signals to the brain. The lowest level at which a person with normal hearing can perceive sound (hear) The zero hearing threshold level (0 db) Measured in cycles per second or hertz (hz) = to 1 sound cycle per second. 1 hz = 1 cycle per second. We can hear frequencies from 20 20,000 hz. Range most important for hearing speech is from 500 2,000 hz. Otoacoustic emissions the cochlea will emit low intensity sounds,
