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87 Cards in this Set

  • Front
  • Back
john kirby sextet
recorded a musical entitled audiology
carhart and canfield
they coined the term audiology
john keys
was the first person to earn a PhD in audiology
the AuD is a
clinical doctorate and professional degree
the role of the AuD is
assessment, rehabilitation, identification
the external auditory meatus adds a _____ boost at teh resonant frequency of the ear canal
the ________ separates the middle and inner ear
the _________ is where the cochlea and the labrynth join
the vestibule houses the ________ and _______
utricle and sacule
the utricle and sacule contain an organ of balance called the
the utricle and sacule interperate ________ acceleration
linear acceleration
the ______________ arise from the utricle
semicircular canals
the ______ in the semicircular canal houses the _______
ampulla, crista
the crista is responsible for
angular acceleration
the three layers of the cochlea are
scala vestibuli, scala media, scala tympani
the scala vestibuli and scala tympani contain perilymph and communicate through a small opening at the tip of the cochlea called the _________
the scala media connects with teh utricle, sacule, and semicircule canals through the ________
ductus reunions
organ of corti has _____ outer hair cells and ____ inner hair cells
15,000 and 5,000
hairlike projections at the top of the hair cells are called
the ____ is the central core around which the cochlea spirals
development of the inner ear. begins in the ___ week and reaches adult size by the ___
6th week, 6th month
in the inner ear the _______ portion develops before the ______ portion
vestibular, cochlear
small auricles
absent auricles
excessive scar tissue on outer ear
squamous cell carcinoma
malignant tumor of the pinna
lack of an open ear canal. causes conductive loss
narrowing of the ear canal. more likely to have earwax buildup
external otitis
infection of the skin of the ear canal - swimmers ear
bony tumors that grow in the ear canal
outward projections or protrusions of the bony wall of the ear canal
thickening and scaring of the eardrum
serous effusion
fluid in the middle ear associated with eustachian tube dysfunction
otitis media
infection of the mucous membrane lining the middle ear cavity
pseudotumor formed in the middle ear by skin entering the middle ear cavity
patulous eustachian tube
when the ET remains chronically open can result in "head in a barrel"
- progressive disorder. begins after puberty. spongy bone growth over stapes footplate. begins to fix the stapes in the oval window. carhart notch at 2000
ossicular discontinuity
trauma to the ossicular chain causes disruption in motion and results in conductive hearing loss
is autosomal dominant and results in sensorineural loss
is autosomal recessive and results in sensorineural loss and loss of vision
alport syndrome
is x-linked recessive and results in sensorineural hearing loss
trisomy 21 may have
conductive, sensorineural or mixed hearing loss
creating a fistula in the annulus of the oval window
acoustic trauma
sensorineural loss as a result of sound. classing audiometric configuration of notch at 4,000 hz
hearing loss due to aging
meniere's disease
1. aural fullness 2. roaring tinitus 2. low frequncy sensorineural loss (fluctuating) 3. vertigo (sudden onset)
causes bilateral auditory nerve tumors
eardrums that are made stiff will vibrate better at a ______ frequency
higher frequency
the velocity of sound in air is
2200 ft/sec at 20 degrees celsius
when two tones of almost identical frequency are presented, there is a increase and decrease in intensity
is a tone of only one frequency
intensity level measurement
10(-16) watts/cm^2
adding two signals of equal intensity produces a ____ increase in intensity level
3dB increase
SPL unit of smallest measurement
20 micro pascals. or .0002dyne/cm^2
adding two signals of equal intensity produces a ____ increase in sound pressure level
the lowest sound intensity that stimulates normal hearing is called
the level of a puretone or complex signal at which it can be detected by the listener 50% of the time
this uses the patient's individual threshold as a reference
pitch is measured in ___ for psychoacoustics
loudness is measured in ___ for psychoacoustics
the occlusion effect is present in patients with
sensorineural loss or normal hearing
the occlusion effect is absent in patients with
conductive loss
the schabach test
compares patient's bone conduction to normal bone conduction
the rinne test
compares patients air and bone conduction. positive is louder by air conduction
the bing test
tests for occlusion effect
the webber test
places tuning fork at midline and determines conductive vs. sensorineural loss
if there is no obvious difficulty in hearing start at
start testing in the ____ear
if there is obvious difficulty hearing, start at ____
level is increased by ___ dBHL until patient responds and lowered in ___dBHL steps
5, 10
puretone average at
500, 1000, 2000
fletcher average is
the better two frequenciers when there is a 20dB discrepancy
three mechanisms of bone conduction
distortional, inertial, osseotympanic
when vibrational force is applied to the skull, the bones move in harmony with phase stimuli
if the skull is set into motion, the ossicles will also be set into motion
the skull vibration creastes energy that is transmitted to the bone and cartilage and creates sound in the ear canal
the occlusion effect occurs most for
the frequencies of 10000 and below (lower frequencies) it goes 30 20 10 10 0
speech awareness threshold
- the softest level at which a patient is able to detect the presence of speech and recognize it as speech
- cold running speech, monotone syllables babababab
Speech recognition threshold
- the softest level at which patient can correctly identify AND repeat (or indicate) speech 50% of the time
- spondees, cold running speech
- familiarize the patient with wordlist
most comfortable loudness level
- normals are usually 40-55dB above threshold
- running discourse
- useful in hearing aid evals
uncomfortable loudness level
- in normals it is usually around 100-110dBHL
- in conductives it may be higher than normals
- in sensorineurals it may be lower than normals
Dynamic range
difference between SRT and UCL
- about 100dB in normals
- may be reduced for sensorineural loss due to “recruitment”
word recognition score
- used to eval recognitions of words
- phonetically balanced (PB) word lists
- PBK – phonetically balanced kindergarten
- Closed set – Picture Identification Task
PB Max
- speech scores plateau above a certain dB level for each individual
- this level varies by individual,
- normals should plateau at over 90%
words are presented
- never below MCL and never above UCL
- scored as % correct out of 25 or 50
Critical bands
the cochlea is divided into a series of overlapping filters
- when masking a tone with a broadband noise, only the frequencies within a critical band centered around the frequency of the tone exert a masking effect on the signal
o NBN – narrow band noise is the masker of choice for pure tone signals
o WBN – wide or white noise is the second choice b/c it covers a broad range of frequencies
There is a _____ safety factor with masking