Audiology Quiz

Front 1

types of speech audiometry

Back 1

- speech reception threshold (SRT)
- word discrimination (WD)

Front 2

speech reception threshold (SRT)

Back 2

- lowest hearing level at which 50% of a list of 10 spondaic words can be correctly identified

Front 3

word discrimination (WD)

Back 3

- aka suprathreshold test
- use single syllable words, start at 30-40 dB above SRT
- uses carrier phrase
- list of 50 words, find % correct

Front 4

acoustic immitance meaning and types

Back 4

- test battery procedure used to identify abnormalities in auditory system
- static compliance
- tympanometry
- acoustic reflex

Front 5

static compliance

Back 5

mobility of tympanic membrane in response to pressure in external ear canal

Front 6

static compliance procedure

Back 6

- insert probe into ear canal
- raise pressure and measure
- equalize pressure and measure

Front 7

static compliance results

Back 7

- below normal indicate change in middle ear limiting tympanic membrane mobility
- above normal suggest interruption in ossicles

Front 8

tympanometry

Back 8

measurement of middle ear pressure used to determine point and magnitude of greatest compliance of tympanic membrane

Front 9

tympanometry procedure

Back 9

- pressure raised in ear canal
- compliance measured in successive intervals as pressure is decreased

Front 10

tympanometry results

Back 10

- type a: normal hear, has greatest compliance at 0 daPa
- type b: middle ear is filled with fluid, the point of greatest compliance cannot be found
- type c: greatest compliance occurs at -200 daPa, problem with pressure, not flexibility

Front 11

acoustic reflex

Back 11

- contraction of tensor tympani and stapedius muscles in response to loud sound
- testing measures quietest sound that elicits reflex

Front 12

acoustic reflex testing

Back 12

- signal presented to one ear
- tympanic membrane compliance decrease detected ipsalaterally or contralaterally
- use pure tone at 70 dB and raise until response is seen
- find threshold

Front 13

acoustic reflex results

Back 13

- reflex occurs at 85 dB in those with normal hearing and lesions in higher centers of auditory cortex
- no response if patient has SN loss
- no contralateral response if patient has lesions in brainstem

Front 14

acoustic reflex decay testing

Back 14

- tests for lesions in auditory nerve and brainstem
- play low frequency tone 10 dB above ART for 10 seconds, goal is to have contraction hold
- count number of seconds for reflex to be reduced by 50%

Front 15

otoacoustic emissions (OAE) meaning and types

Back 15

- sounds generated within cochlea
- transient-evoked OAE
- distortion-product OAE

Front 16

OAE procedure

Back 16

- probe placed in external auditory canal
- evoking stimulus presented thru mini loudspeaker
- microphone converts OAE into electrical signal

Front 17

OAE results

Back 17

- presence of evoked OAE suggests little or no conductive loss caused by middle ear abnormality
- indicates disorder is retrocochlear for SN loss

Front 18

transient-evoked OAE

Back 18

series of brief tones such as clicks

Front 19

distortion-product OAE

Back 19

two tones presented at once

Front 20

auditory evoked potentials (AEP)

Back 20

electrical responses generated within cochlea due to acoustic stimuli

Front 21

electrocochleography (ECoG)

Back 21

response to sound in form of electrical potentials in cochlea that occur milliseconds after signal presentation

Front 22

auditory brain stem response (ABR)

Back 22

- used to assess integrity of central auditory pathway
- electrodes placed on mastoid and top of skull, with additional ground electrode
- rapid stimuli presented, eliciting wavelengths

Front 23

intraoperative monitoring

Back 23

use of AEP for monitoring electrophysiological states of patient during neurosurgery

Front 24

event related potentials

Back 24

recognized at 80 ms

Front 25

tangible reinforcement operant conditioning audiometry (TROCA)

Back 25

form of operant audiometry using rewards such as food or tokens

Front 26

Ling (6 sounds) test

Back 26

used to determine frequency-specific hearing lsos information in children by using frequency specific phonemes (/a/, /u/, /i/ for 1K Hz, /sh/ for 2K Hz, /s/, /m/ for 4K Hz)

Front 27

behavioral observation audiometry (BOA)

Back 27

- observation of changes in activity state of infant (<8 months) in response to sound
- one clinician observes child while other presents sound

Front 28

auropalprebral reflex (APR)

Back 28

contraction of ring muscles of eyes in response to sudden sound

Front 29

Moro reflex

Back 29

sudden embracing of arms and drawing up of legs in response to sudden sounds