chapter 6

Question 1

audiometry

Answer 1

measurement of a person’s ability to hear different sounds

Question 1

Audiometric

Answer 1

describes different aspects pertaining to audiometry

Question 2

Pure-tone audiometry

Answer 2

basic hearing test that finds hearing thresholds

Question 3

Hearing threshold

Answer 3

the softest sound you can hear 50% of the time

Question 4

Pure-tone audiometric thresholds are used by audiologists to determine:

Answer 4

1. Degree of loss
2. Type of hearing loss
3. Medical referral necessary?
4. Effect of hearing loss on a person’s ability to hear conversational speech

Question 5

difference between screening and evaluation

Answer 5

Screening - give one sound and they say whether they hear it or not; Evaluation - determine hearing threshold and level at which they lack hearing

Question 6

Frequency selector

Answer 6

changes frequency

Question 7

Attenuator dial

Answer 7

changes volume

Question 8

transducer selector

Answer 8

allows you to select what device the sound is coming from

Question 9

router switch

Answer 9

tells left or right ear

Question 10

interrupter switch

Answer 10

presents sound to them

Question 11

patient respond indicator

Answer 11

button the client presses to notify that they can hear the sound

Question 12

VU meter

Answer 12

calibrates input of tester’s voice

Question 13

transducer

Answer 13

device that vibrates when activated by an electrical signal from oscillator, converting electrical signals into vibrations that can be heard

Question 14

insert earphones

Answer 14

prevents ear canal collapse, reduces background noise, reduces need for masking

Question 15

supra-aural earphones

Answer 15

need to be placed correctly, can collapse ear canal, use as little as possible

Question 16

ultra high frequency earphone

Answer 16

used to test frequencies above 8000 Hz, proper positioning important

Question 17

sound field speakers

Answer 17

used when testing pts w HAs or CIs, used when pt won’t tolerate inserts, cannot get ear specific info

Question 18

bone conduction vibrator

Answer 18

place on mastoid, both cochleae receive sound simultaneously

Question 19

when sound stimulates entire auditory system

Answer 19

air conduction

Question 20

degree of hearing loss is based on what

Answer 20

air conduction

Question 21

when testing/diagnosing hearing loss, look at what

Answer 21

air conduction results

Question 22

when sound goes directly to inner ear, what’s being tested

Answer 22

bone conduction

Question 23

hearing evaluations are completed where

Answer 23

sound treated rooms or booths

Question 24

what gives standards of permissible background noise levels

Answer 24

American National Standards Institute

Question 25

sound treated booth requirements

Answer 25

walls - 4 in thick, small holes on inside wall surface to absorb sounds and reduce reflections

Question 26

control panel

Answer 26

allows equipment to be connected to sound booth

Question 27

window

Answer 27

allows visual contact

Question 28

child typical orientation

Answer 28

face you (0 degrees) because you want to give feedback and eliminate distractions

Question 29

adult typical orientation

Answer 29

45-90 degrees facing away from you

Question 30

establishing threshold criterion

Answer 30

threshold is lowest level in which patient gives at least 3 responses at same level

Question 31

how many decibels test retest variability is acceptable

Answer 31

5

Question 32

physiologic measures (otoacoustic emissions, OAE, auditory brainstem response, ABR, BEAR)

Answer 32

0 to 4-6 months

Question 33

visual reinforcement audiometry (VRA)

Answer 33

4-6 months to 2.5 years

Question 34

conditioned-play audiometry (CPA)

Answer 34

2.5 years - 4 years

Question 35

adult testing

Answer 35

4 yrs and older