csd ch 12 Flashcards
deaf
a hearing loss at 90 dB or greater (profound)
deaf community
persons who view deafness with a sense of pride that serves to unite members and positively shape their sense of self-identity
intensity
amplitude of a vibration, measured in dB
frequency
back and forth movement of a vibration, resulting in a certain number of cycles, expressed as Hertz. (cycles per second)
peripheral auditory system
outer ear, middle ear, inner ear, vestibulocochlear nerve
central auditory system
the auditory brain stem and the auditory cortex of the brain
pinna
the most visible structure of the auditory system, made of cartilage covered with skin.
tympanic membrane
eardrum, separates outer ear from middle ear
cerumen
earwax
eustachian tube
opening that connects the middle ear with the nasal-sinus cavity
cochlea
the spiral cavity of the inner ear containing the organ of Corti, which produces nerve impulses in response to sound vibrations.
conductive system
outer ear and middle ear, serves to collect, amplify, and conduct sound to the cochlea.
microtia
small, malformed pinna
atresia
a disorder in which there is complete closure of the external auditory meatus; because sound cannot travel through the ear canal in the usual manner, there is hearing loss.
otitis media
an inflammation of the mucous membrane lining of the middle ear cavity; common cause of conductive hearing loss in children
otitis media with effusion (ome)
secretion of fluid in the middle ear, cause by negative middle ear pressure
PE tubes (pressure equalization or tympanostomy)
treatment method of otitis media by draining the fluid with insertion of tubes into the tympanic membrane.
congenital
present at birth
Sensorineural system
cochlea and auditory nerve
prelingually
before speech and language skills have developed
postlingually
after spoken language skills are acquired
aplasia/dysplasia
hearing loss due to absence or malformation of inner ear structures during embryonic development
Presbycusis
some degree of hearing loss caused through the aging process; can be due to loss of cochlear hair cells, reduced responsiveness of the hair cells, or loss of auditory nerve fibers
myringotomy
incision in the tympanic membrane to drain fluid from the middle ear, often followed by PE tubes
Aural habilitation/rehabilitation
intervention aimed at minimizing and alleviating the communication difficulties associated with hearing loss.
aural habilitation
intervention conducted with individuals whose hearing loss occurred at an early age and therefore prevented normal development of auditory and spoken language skills.
aural rehabilitation
services and therapies provided to individuals who have lost their hearing later in life, after spoken language skills have fully developed.
