Hearing Flashcards Preview

COMPS > Hearing > Flashcards

Flashcards in Hearing Deck (29)
Loading flashcards...
1

What is the term for the sound field in which sound waves reflect from a single surface and return toward their source?
A. diffusing field
B. sinusoid movement
C. simple reflective field

C. simple reflective field

2

T/F: White noise is a broad, continuous band of noise with equal sound pressure at each frequency.

True

3

T/F: Vibration is damped and eventually extinguished by friction in the real world.

True

4

What are the three components of impedance?

stiffness, mass, friction

5

T/F: Smaller middle ear cavity is lower admittance.

True

6

Which is the flow of energy through the vibrating system?
A. impedance
B. admittance
C. immittance

Admittance: with higher admittance is lower impedance

7

What is the measure of the change in admittance as air pressure changes and provides a means of separating the admittance?

tympanometry

8

Type A: shallow

reduced movement of TM, otosclerosis, or OME (fluid)

9

Type B: flat

OME, perforation of the TM or PE tubes, impacted cerumen

10

Type C: Negative pressure

should resolve when ET is opened, if not fluid in the ME may occur

11

What is the fixation of the stapes in the oval window?

otosclerosis

12

T/F: OAEs are low level acoustic vibrations measure in the ear canal, travel along the basilar membrane through the middle ear ossicles and vibrate the TM which vibrates the air in the external ear canal

true

13

Which of the following does NOT an OAE tell us?
A. forward and reverse transmission
B. blockage of the EAC
C. inner hair cells function
D. conductive mechanism function

C. inner hair cells function

14

T/F: TEOAEs are evoked by the presentation of a series of brief clicks, recorded during the short silent intervals between successive clocks and occur with a time delay after each click

True

15

How many parts is the ear divided into?

FIVE: outer ear, middle ear, inner ear, 8th cranial nerve, and the central auditory nervous system

16

What are the ossicles?

malleus, incus, stapes

17

What are the components of the inner ear?

bony labyrinth, cochlea, oval window, round window, vestibule, three semicircular canals

18

What are the advantages/disadvantages of single subject design?

Advantages:
- all subjects serves as own controls
- all subjects receive treatment
- blinding can be maintained

Disadvantages
- all subjects receive placebo or alt. treatment
- cannot be used for treatments with permanent effects

19

What type of validity is the degree to which the items on the test are representative of the measure: appropriateness of items; completeness of the items sampled; degree to which the items assess the content.

Content validity

20

What is how well the descriptive statistics define the distribution of scores in the normative sample?

measures central tendency

21

What is the p-value?

likelihood that the difference occurred by chance

if it is set at < 0.05 then there is less than a 5% probability that the observed difference occurred by chance or at random

22

What is the null hypothesis?

states that there is no difference between groups or no relationship among variables

23

What is nystagmus?

catching up system, when your system is not okay there is an abnormality or higher nystagmus

24

Air conduction masking: whenever the difference between the air conduction threshold of the test ear and the bone conduction threshold of the non test ear is greater than or equal to the interaural attenuation

present masking (narrow band of noise) at 1000 Hz to the left ear and then continue presenting the test tone at 1000 Hz to the right ear

25

Sensorineural hearing loss

air - bone gap < 10 db

26

conductive hearing loss

air - bone gap > 10 db; DC < 25 dB HL

27

What is speech reception threshold?

the level at which a patient is able to correctly repeat 50% of the speech stimuli

28

What is the speech banana?

representation of speech sounds at the conversational level, used on the audiogram as a patient counseling tool

29

What is the Hearing In Noise Test? (HINT)

evaluates the patient's ability to recognize sentences in the presence of background noise based on the speech recognition in noise test, noise is a steady broadband noise