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4190 MIDTERM
Lecture 6 Hearing Measurment
46
Audiology
Undergraduate 4
03/05/2012

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Cards

Term
2 PATHWAYS FOR SOUND IN COCHLEA
Definition
1. Air Conduction
2. Bone Conduction
Term
Where is begining of Transduction?
Definition
sound begins at pinna
Term
How Test Air Conduction?
Definition
headphones, inserts
tests the entire auditory systems
Term
What can Disrupt Conduction?
Definition
SNHL: problem cochlea
Conductive
Mixed
Term
How Test Bone Conduction?
Definition
Bone Fibrator or oscillator
does NOT test outer/middle ear
Term
What can disrupt Bone Conduction?
Definition
problems with outer/middle ear will not show up on test
Term
Softest sound can hear
Definition
Threshold of Audibility
Term
Single Frequency/Pure Tone
Definition
Stimuli
Term
Sound Pressure Level
Definition
dB SPL
physical presense of sound
Term
Intensity Dimension of Sound
Definition
dB
Term
Hearing Level Scale converts _____
Definition
converts Audibility Curve into Straight Flat Line
Term
Audiometric Zero
Definition
flat line conversion of curve
someone CAN hear 0 dB HL
someone CANNOT hear 0 dB SPL
Term
Minimal Audibility Curve sound is presnt is ___ dBHL
Definition
0 dB HL
Term
Graphic Representation of Hearing test results based on dBHL
Definition
Audiogram
Term
Count the Dot
Definition
dots represent speech sounds
HL wl have less dots
AI shows how HL will affect day-to-day
Term
Speech Banana Audiogram
Definition
shows which frequency and intensity levels different speech sounds come in
Term
Vowels are __ f
Definition
lower
Term
consonants ___ f; soft
Definition
higher
Term
Hearing Test:
Red
Definition
red - right ear
Term
Hearing Test:
Blue
Definition
blue - left ear
Term
Conductive HL
Definition
loss by air conduction testing, normal bone conduction becuase cochlea normal
Term
SNHL
Definition
equal loss by air & bone conduction (problem with cochlea and beyond)
Term
Mixed
Definition
loss by bone, with greater loss by air typically
Term
4 parameters of HL
Definition
1. Degree
2. Configuration
3. Type
4. Symmetry
Term
Accurate Diagnosis of HL requires
Definition
all 4 parameters needed
Term
0-15 db
Definition
Normal Degree
Term
15-25 dB
Definition
Slight/Minimal Degree

used with children NOT adults
Term
is 20 dB normal for adult?
Definition
YES
Term
25-40 dB
Definition
mild
Term
40-55 dB
Definition
moderate
Term
55-70 dB
Definition
Mod-Severe
Term
70-90 dB
Definition
Severe
Term
Profound HL is ___
Definition
90+ dB
Term
Flat Configuration:
Definition
HL affects all frequencies same
Term
Sloping Configuration:
Definition
better hearing in Low F
Term
Precipitous Configuration
Definition
extrememly steep slope
severe drop
Term
Notch Configuration
Definition
NIHL
Term
Corner Audiogram
Definition
profoudn HL
Term
Conductive Implications
Definition
fluid or obstruction in outer/middle
nerve NOT damages
if get sound louder can understand
Term
SNHL Implications
Definition
more dx to nerve
hair cells connect cochlea to nerve
making sound louder DO NOT help
Term
___ million Americans 18+ have HL
Definition
~32 million Americans 18+ have HL
Term
Significant Reduction in ___ life
Definition
interpersonal relationships
Term
Increased Functionality in adult wwith Alzheimer's if __
Definition
given HA
Term
___ children with unilateral HL have repeated a grade in school
Definition
1/3
Term
about ___% school aged children have some kind of HL
Definition
11%
Term
average deaf child with no amplification has ___ words at age 6
Definition
50-60

versus 3000
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