Basic Audiology

Question 1

A threshold is the level at which a tone or sound can be heard at what percentage of the time?

Answer 1

50%

Question 2

What is the order by which frequencies should be tested according to ASHA?

Answer 2

1000, 2000, 3000, 4000, 6000, 8000, 1000, 500, 250

Question 3

At what intensity do you begin testing?

Answer 3

30 dB HTL

Question 4

If there is no response at 30 dB HTL, at what intensity to you next present the tone? If there is still no response?

Answer 4

50 dB HTL. Then increase by 10 dB until a response is obtained.

Question 5

How do you determine the Pure Tone Average?

Answer 5

By averaging the thresholds of 500, 1000, and 2000 Hz.

Question 6

The difference between air and bone conduction must be greater than or equal to how many dB HTL to be considered an Air-Bone Gap?

Answer 6

15 dB HTL

Question 7

A Type C tympanogram must be a minimum of how many mm H2O to the left?

Answer 7

< -150 mm H2O

Question 8

What condition is associated with a Type C tympanogram?

Answer 8

Eustachian Tube Dysfunction

Question 9

What condition is associated with a Type B tympanogram with no canal volume?

Answer 9

Cerumen (or the probe tip is against the canal wall)

Question 10

What condition is associated with a Type B tympanoram with normal canal volume?

Answer 10

Otitis Media

Question 11

What condition is associated with a Type B tympanogram with high (>2.0 ml) canal volume?

Answer 11

Tubes, or a perforated tympanic membrane

Question 12

If a conductive loss exists, what condition is associated with a Type Ad tympanogram?

Answer 12

Discontinuity of the Ossicular Chain

Question 13

If a conductive loss exists, what condition is associated with a Type As tympanogram?

Answer 13

Otosclerosis/Tympanosclerosis

Question 14

Carhart’s Notch is associated with what condition?

Answer 14

Otosclerosis

Question 15

What is the term for the number of decibels lost in cross-hearing?

Answer 15

Interaural Attenuation

Question 16

What is the term for low-level sounds emitted by the cochlea, which are related to outer hair cell function?

Answer 16

Otoacoustic Emissions

Question 17

What is another name for the Speech Reception Threshold (SRT)?

Answer 17

Spondee Threshold

Question 18

What is a Spondaic Word?

Answer 18

A two-syllable word with equal stress on both syllables (baseball, hotdog, airplane, cowboy)

Question 19

What is the relationship of the Speech Reception Threshold to the Pure Tone Average?

Answer 19

SRT is always within +/- 6 dB of PTA

Question 20

What is the relationship of the Speech Reception Threshold to the Speech Detection Threshold?

Answer 20

SRT is always higher than SDT, but will not exceed 12 dB

Question 21

What lists of words can be used for Speech Discrimination Testing/Word Recognition Testing?

Answer 21

Phonetically-Balanced (PB), Consonant-Nucleus-Consonant (CNC), High-Frequency, Word Intelligibility by Picture Identification (WIPI), Early Speech Perception Test (ESP)

Question 22

How many syllables are in a PB word?

Answer 22

One

Question 23

How many syllables are in a CNC word?

Answer 23

One

Question 24

Can PB words be used in comparison with CNC words?

Answer 24

Yes

Question 25

Can High-Frequency words be used in comparison with PB and CNC words?

Answer 25

No

Question 26

What is an Acoustic Reflex?

Answer 26

The contraction of middle ear muscles (primarily the stapedius) in response to loud sounds.

Question 27

What is an ipsilateral presentation? Contralateral?

Answer 27

Ipsilateral - Stimulate one ear, record that ear.

Contralateral - Stimulate one ear, record other ear.

Question 28

What is the intensity range in a normal acoustic reflex threshold?

Answer 28

70-95 dB

Question 29

For what population is Otoacoustic Emission (OAE) testing most beneficial?

Answer 29

Pediatrics