20-1 Flashcards
the sense or act of hearing
audition
what sound frequency do we hear the best
human voice
Why are those with normal hearing acutely sensitive to fain sound
its from ancestor’s survival when hunting or being hunted, or fighting OR a child’s whimper
we hear both ___and___conduction
air, bone
the amplitude of sound waves determines thier
loudness
their length or frequency determines the____we experience
pitch
Every ___decibles correspond to a tenfold increase in sound intensity
10
How loud is normal conversation
60 decibles
1st in order of how we hear
outer ear
2nd in order of how we hear
auditory canal
3rd in order of how we hear
eardrum
4th in order of how we hear
middle ear (hammer anvil and stirrup)
5th in order of how we hear
(jostling fluid) oval window of the cochlea
6th in order of how we hear
basilar membrane
7th in order of how we hear
hair receptor cells
8th in order of how we hear
auditory nerve, which sens neural messages (via the thamalus)
9th in order of how we hear
auditory cortex
caused by damage to the cochlea’s receptor cells or to the auditory nerves
sensorineural hearing loss/ nerve deafness
hearing loss caused by damage to the mechanical system that conducts sound waves to the cochela
conduction hearing loss
What are 3 major explanations for nerve deafness
-biological changes liked to heredity
-aging
-prolonged exposure to ear-splitting noise or music
sounds over ____ decibels are damaging
100
ringing to ear is equivalent of
bleeding ears
who does the most self-harm to their hearing
teenage boys and men
the only way to restore hearing for people with nerve deafness is a sort of bionic ear
cochlear implant
The brain can interpret loudness from the
number of hair cells
