Pediatric audiology

Question 1

family history of permanent childhood hearing loss
ventilation
ototoxic medications
hyperbilirubinemia at level requiring exchange transfusion

Answer 1

risk factors progressive hearing loss

Question 2

the lowest levels of response offered by a child to an acoustic stimulus

Answer 2

minimum response levels

Question 3

Obtaining 2000Hz, 500 Hz, 1000, Hz, and 4000Hz

Answer 3

Behavioral procedures

Question 4

a glass enclosure designed to regulate the flow of electric current.

Answer 4

vacuum tube

Question 5

an electronic device with low power consumption, and small space requirements, that amplified electric current through the use of semiconducting properties of an element such as silicon.

Answer 5

transistor

Question 6

an inseparable unification of several transistors on a small piece of silicon maintaining an electrical isolation of hte circuit components.

Answer 6

integrated circuit

Question 7

an amplification system in which the electrical signal is analogous to the input acoustical signal in frequency, intensity, and temporal patterns

Answer 7

analog hearing aid

Question 8

an amplification system in which the input signal is stored, as by a computer, as sets of binary digits that represent frequency, intensity, and temporal patterns of the input acoustical signal.

Answer 8

Digital hearing aid

Question 9

in a hearing aid, a method of limiting the amplification of louder sounds relative to weaker sounds.

Answer 9

compressions

Question 10

properties of hearing aids as defined by the hearing aid industry. conference, an organization of hearing aid manufacturers that provides standardization of measurement and reporting on hearing aid performance data.

Answer 10

electroacoustic characteristics

Question 11

The maximum ower out put of a hearing aid. The highest sound-pressure level to leave the receiver of a hearing aid, regardless of the input level.

Answer 11

output sound-pressure level

Question 12

in a hearing aid, the frequence range of amplification, expressed in Hz, from the lowest to the highest sound amplified

Answer 12

frequency response

Question 13

in a hearing aid, the result of an inexact copy of the input signal by the output signal. distortion is usually caused by the microphone, speaker, and/or amplifier.

Answer 13

Distortion

Question 14

The whistling sounds that is created when the signal leaving the receiver on the hearing aid leaks back into the microphone and is reamplified.

Answer 14

acoustic feedback

Question 15

allows ear canal to be more open allowing sounds to become more natural

Answer 15

open-fit hearing aid

Question 16

speaker more power

limitation: ear wax will get in the receiver

Answer 16

receiver-in-the canal

Question 17

two microphones

Answer 17

omni directional

directional

Question 18

A device that delivers amplified vibratory energy to the surface of the skin by special transducers; designed for patients whose losses are so severe that they receive no benefit from traditional hearing aids.

Answer 18

vibrotactile

Question 19

A coil and series of electrodes surgically placed in the mastoid and inner ear. It is designed to provide sound to a patient with a profound loss through a processor and external coil.

Answer 19

cochlear implant