audiometry

Question 1

calibration (audiometry variable)

Answer 1

determines that the audiometer works properly through

• acoustic output: signal being sen tfrom audiometer to patient
• attenuater linearity- increase/decrease frequency/intensity
• frequency accuracy
• harmonic distortion: quality of signal

Question 2

ambient noise (auidometry variable)

Answer 2

background noise, reduced to a permissable level, but audiometry is performed in soundproof booth

Question 3

physical testing conditions (audiometry variable)

Answer 3

testing environment such as seating (facing away from audiologist), light, temperature

Question 4

transducers (audiometry variables)

Answer 4

types of headphones
insert earphones will not causecollapsing ear canal (as opposed to traditional headphones), also more comfortable, better hygiene, reduces background noise

Question 5

individual characteristics (audiometry variables)

Answer 5

age, experience, cognitive function, reaction time, motivation

Question 6

patients role

Answer 6

BEHAVIORAL, respond when tone is present. watch for false positives when they respond when no stimulus is present

Question 7

method of adjustment (assessment technique)

Answer 7

patient is in control, sound starts loud and gets softer, when patient cannot hear they press button

Question 8

method of constant stimuli (assessment technique)

Answer 8

not used in clinic because it would take too long, audiologist presents random intensity levels to client

Question 9

method of limits

Answer 9

mainly used, clinician controls stimulus and patient responds
mostly use hughson-westlake technique (decrease by 10 db up by 5 db)
criterion = 50%