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PSY345H5 (172)
Lecture

Hearing Impairment - detailed notes organized under slide titles :)

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Department
Psychology
Course
PSY345H5
Professor
Stuart Kamenetsky
Semester
Summer

Description
Hearing impairment -helen keller said that deafness was harder to live with than blindness -blindness cuts you off from the visual world but deafness cuts you off from people which is a lot harder to live with -if you ask a typical person most would say they would rather be deaf than blind Loudness, pitch, timbre graph -sound is energy created through vibrations -increase in amplitude = louder the sound -increase in frequency = higher pitch -doubling frequency up 1 octave -we have a range of about 20 20 000 Hz -timbre example: middle C on a piano compared to middle C on a violin compared to a vocalist singing middle C all the same note musically but since they are created differently they produce a different sound ex: vibrating metal vs string vs vocal chords The structure of the human ear -sound vibrates ear drum transferred through 3 little bones pass on movement into the cochlea (which is full of fluid) fluid is pushed and little hair cells move nerve endings are stimulated passes signal to auditory nerve then to auditory cortex -if you have a hole in the ear drum, it will leak properties will not be the same -eustachian tube: balances pressure between the inner ear and outside world Hearing thresholds of a person with hearing in the normal range -most people (even those with hearing disorders) can www.notesolution.com
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