CMD 321 EXAM 2 QUESTIONS ANSWERED CORRECTLY LATEST UPDATE 2026
red on an audiogram - Answers represents the right ear (think red, right, round)
blue on an audiogram - Answers represents the left ear
Normal hearing - Answers 00-25 dB
With kids sometimes listed as 0-20 dB
mild hearing loss - Answers 26-40 dB
moderate hearing loss - Answers 40-55 dB
moderately severe hearing loss - Answers 56-70 dB
severe hearing loss - Answers 71-90 dB
profound hearing loss - Answers Greater than 90 dB
degrees of hearing loss - Answers normal, mild, moderate, moderately-severe, severe, profound
conductive hearing loss - Answers Bone conduction must be within normal limits if you have
conductive hearing loss, air conduction scores are not within normal limits **there is a gap of at least
10 dB**
sensorineural hearing loss - Answers Bone conduction and air conduction mirror each other
No gap = sensorineural
mixed hearing loss - Answers Air conduction is not good
But there is also still a gap of at least 10 dB between air and bone
Modified hughson-westlake technique - Answers Response - Continue to decrease by 10 dB until no
response
No response - Increase by 5 dB HL until receive a response
air conduction - Answers all 3 parts of ear; degree of hearing loss
bone conduction - Answers directly to the inner ear/cochlea
symbol for right bone conduction - Answers <
symbol for left bone conduction - Answers >
bone conduction testing - Answers Bone conduction testing bypasses the outer and middle ears and
assesses the sensitivity of the inner ear
pure tone average - Answers Average of AC thresholds at 500, 1000, 2000 Hz
variables of pure tone tests- what can be manipulated - Answers Ascending vs. descending
Step size (5 dB, 2 dB or 1 dB)
Length of stimulus
Continuous versus pulse tones
psychoacoustics - Answers The study of the relationship between physical stimuli and the
psychological responses to which they give rise
attenuation - Answers Loss of energy that happens when non-test ear picks it up
purpose of masking - Answers To eliminate the participation of the non-test ear while measuring
some aspect of auditory function in the test ear.
dB required to mask in typical headphones - Answers 40 dB or more difference between the two ears
at any given frequency have to mask for typical headphones
dB required to mask in insert headphones - Answers 50 dB or more difference have to mask is
general rule for insert headphones
symbols for masking on audiogram - Answers blue square for left ear, red triangle for right ear
3 frequency pure tone average - Answers *air conduction*
PTA = average of thresholds at 500, 1000, 2000 Hz
otalgia - Answers Pain
otorrhea - Answers Drainage
ototoxicity - Answers Medications - affects high frequencies
otoscope - Answers Makes a visual inspection of the ear canal
Transducer - Answers way that sound is being delivered to the patient
Warble tones - Answers Slight and rapid change or modulation the frequency of pure tones used in
hearing testing with loudspeakers in a sound-treated room to minimize the likelihood of constructive
or destructive interference
Variables that can affect results - Answers Calibration
Ambient noise
Physical test conditions
Type of earphone
red on an audiogram - Answers represents the right ear (think red, right, round)
blue on an audiogram - Answers represents the left ear
Normal hearing - Answers 00-25 dB
With kids sometimes listed as 0-20 dB
mild hearing loss - Answers 26-40 dB
moderate hearing loss - Answers 40-55 dB
moderately severe hearing loss - Answers 56-70 dB
severe hearing loss - Answers 71-90 dB
profound hearing loss - Answers Greater than 90 dB
degrees of hearing loss - Answers normal, mild, moderate, moderately-severe, severe, profound
conductive hearing loss - Answers Bone conduction must be within normal limits if you have
conductive hearing loss, air conduction scores are not within normal limits **there is a gap of at least
10 dB**
sensorineural hearing loss - Answers Bone conduction and air conduction mirror each other
No gap = sensorineural
mixed hearing loss - Answers Air conduction is not good
But there is also still a gap of at least 10 dB between air and bone
Modified hughson-westlake technique - Answers Response - Continue to decrease by 10 dB until no
response
No response - Increase by 5 dB HL until receive a response
air conduction - Answers all 3 parts of ear; degree of hearing loss
bone conduction - Answers directly to the inner ear/cochlea
symbol for right bone conduction - Answers <
symbol for left bone conduction - Answers >
bone conduction testing - Answers Bone conduction testing bypasses the outer and middle ears and
assesses the sensitivity of the inner ear
pure tone average - Answers Average of AC thresholds at 500, 1000, 2000 Hz
variables of pure tone tests- what can be manipulated - Answers Ascending vs. descending
Step size (5 dB, 2 dB or 1 dB)
Length of stimulus
Continuous versus pulse tones
psychoacoustics - Answers The study of the relationship between physical stimuli and the
psychological responses to which they give rise
attenuation - Answers Loss of energy that happens when non-test ear picks it up
purpose of masking - Answers To eliminate the participation of the non-test ear while measuring
some aspect of auditory function in the test ear.
dB required to mask in typical headphones - Answers 40 dB or more difference between the two ears
at any given frequency have to mask for typical headphones
dB required to mask in insert headphones - Answers 50 dB or more difference have to mask is
general rule for insert headphones
symbols for masking on audiogram - Answers blue square for left ear, red triangle for right ear
3 frequency pure tone average - Answers *air conduction*
PTA = average of thresholds at 500, 1000, 2000 Hz
otalgia - Answers Pain
otorrhea - Answers Drainage
ototoxicity - Answers Medications - affects high frequencies
otoscope - Answers Makes a visual inspection of the ear canal
Transducer - Answers way that sound is being delivered to the patient
Warble tones - Answers Slight and rapid change or modulation the frequency of pure tones used in
hearing testing with loudspeakers in a sound-treated room to minimize the likelihood of constructive
or destructive interference
Variables that can affect results - Answers Calibration
Ambient noise
Physical test conditions
Type of earphone
