CH. 6 - Pure-tone audiometry

Question 1

electronic instrument used by audiologist to quantify hearing

Answer 1

Audiometer

Question 2

during an audiogram, introducing sound to one ear while testing other to eliminate residual bone conduction factor

Answer 2

mask

Question 3

type of HL that can be conductive, sensorineural or mixed

Answer 3

peripheral HL

Question 4

ie “between the ears”; extent to which hearing sensitivity is same in both ears or better in one than other

Answer 4

Interaural symmetry

Question 5

amount of reduction in intensity that occurs as a signal crossover over the head from one ear to other

Answer 5

Interaural attenuation

Question 6

what are the two main types of audiometers?

Answer 6

clinical/diagnostic
screening

Question 7

device audiologists use to present sound (ie insert earphones)

Answer 7

Transducer

Question 8

the dial in an audiometer that controls intensity

Answer 8

attenuator

Question 9

part of an audiometer responsible for selecting frequency

Answer 9

Oscillator

Question 10

the part of an audiometer that you need to push in order to play a tone. Often you’ll hold for as long as you want it to play

Answer 10

interrupter switch

Question 11

hold your interrupter switch for around __

Answer 11

2-3 seconds

Question 12

what is this?

Answer 12

audiometer

Question 13

three types of earphones

Answer 13

insert (in ear canal)
supra-aural (normal headphones) circumaural (dome-shaped cushion over ear)

Question 13

these two signals are mostly used for masking

Answer 13

broad-band and narrow-band

Question 13

this part of the audiogram converts energy from audiometer into acoustic/vibratory energy

Answer 13

transducer

Question 14

what are three reasons insert earphones are industry standards instead of supra-aural

Answer 14

-Normal earphones can cause ear canals to collapse/close for older patients
-Normal earphones have inadvertent bone conduction
-less errors putting them on

Question 15

what is the organization that sets the standards for calibrating audiometry equipment

Answer 15

ANSI (american national standards institute)

Question 16

what is the goal of using an audiometer to make an audiogram?

Answer 16

establish hearing threshold sensitivity across range of audible frequencies important for human communication

Question 17

what is a pure-tone average?

Answer 17

mean of air-conduction thresholds at 500, 1k and 2k Hz

Question 18

type of HL

Answer 18

mixed

Question 19

type of HL

Answer 19

sensorineural

Question 20

type of HL

Answer 20

conductive

Question 21

if air conduction results are normal, what does that mean?

Answer 21

person has normal hearing

Question 22

if air conduction results are not normal, what does that mean?

Answer 22

there is some type of HL and we have to do more tests

Question 23

what is it called when sound becomes so loud in one side it is perceived on other side

Answer 23

crossover

Question 24

what is the interaural attenuation for bone conduction?

Answer 24

0 dB

Question 25

when conducting bone conduction test, when do you use masking?

Answer 25

always

Question 26

if a person has severe to profound HL via air conduction and no response via bone conduction, what is the type of loss?

Answer 26

sensorineural