What does the quote, “ Blindness separates a person from things, whereas deafness separates a person from people.” mean?
its explains how hearing to important
Who said, “ Blindness separates a person from things, whereas deafness separates a person from people.” ?
What is sound energy?
measure the height of the wave
What kind of units are used in amplitude in hearing?
what is dB?
if a human experiences 130dB, what can occur?
what is the unit for frequency?
600 Hz sound completes 600 cycles in how many seconds?
What does the quality distinguish?
same pitch and volume
Amplitude : Perception of Characteristic
high amplitude waves are perceived as quite sounds.
low amplitude waves are perceived as soft sounds.
Frequency: Perception of Characteristic
low frequency waves are perceived as low-pitched sounds.
High-frequency waves are perceived as high- pitched sounds.
timbre: Perception of characteristic
The distinct quality or uniqueness of a sound. Allows us to distinguish which instrument produced a note
Pure tones have multiple frequencies.
Complex tones are made up of several frequencies.
Ultrasound are how many Hz
infrasounds are how many hertz
involved primarily in balance
involved primarily in balance
involved in hearing
What does the auricle do?
collect sound waves
the middle ear is filled with?
the internal ear is filled with?
3 ossicles are:
malleus, incus, stapes
the bones of the middle ear does what with the tympanic membrane
What is the eustachian tube?
passage way of air
With an increase in altitude, the pressure outside the tympanic membrane < the air pressure inside the middle ear
the tympanic membrane is pushed outward.
With a decrease in altitude, ...
Distortion of the tympanic membrane can make sounds seem muffled and stimulate pain.
Inner Ear: Contain sensory organs for what?
hearing and balance
what are the bony labyrinth in the inner ear?
Vestibule, Semicircular canals, Cochlea
what shape is the cochlea ?
- shell- a coiled tube
Scala vestibule (Vestibular canal)
Scala media (Cochlea duct)
Scala tympani (Tympanic canal)
Within the cochlear duct
the Organ of Corti
What is the path of sound?
Sound ----> vibrate tympanic membrane---->Auditory ossicles vibrate--->Pressure is amplified--->press waves created by the stapes pushing through the fluid in slack vestibule----> sounds go through cochlear duct---> vibrating the basilar membrane and deflecting hairs on inner hair cells.
After the sound travels to inner ear where does it go?
After the medulla, the sound travels to the...
after the inferior colliculi where does the sound travel?
after the thalamus, sound goes to the...
where is the auditory cortex?
what causes conduction deafness ?
o a buildup of wax in the ear canal
o infections of the middle ear
o a disease know as otosclerosis.
who is legally deaf?
when speech sound is less than 82dB or cannot be heard
Age-related hearing loss results from a variety of factors
o Poor circulation to the inner ear
o The cumulative effects of a lifetime of exposure to loud noise.
senineuronal deafness can be caused by
o Antibiotics can damage hair cells in sensitive individuals.
o Nicotine produces hearing loss by reducing blood supply to the ear.
o For people with cochlear or brainstem damage, implants can restore the
ability to process speech sounds.