exam 1 review

Question 1

what do audiologists provide

Answer 1

prevention
identification
assessment
rehabilitation
adovacy
education
research
administration

PIARAERA

Question 2

what is in the aud scope of practice (10)

Answer 2

auditory brainstem evals
audiometric evals
newborn hearing screening
hearing aid fitting
cochlear implant programming
intra operative neural monitoring
assisstive device fitting
vestibular testing & treatment
rehab & outcome assessment
couseling

Question 3

what is the spring mass system in sound production

Answer 3

the air

introducing force into the air causes small pressure variations

results in sound

Question 4

what unit do we use to measure sound amplitude

Answer 4

sound pressure level

Question 5

intensity (sound where)

Answer 5

sound flowing through some area

Question 6

pressure (sound where)

Answer 6

sound at any given point in space

Question 7

intensity & pressure relationship

Answer 7

intensity = pressure ^2

Question 8

pressure equation

Answer 8

force / area

Question 9

purposes of the pinna

Answer 9

collects sound waves & directs them toward the ear canal

amplifies sound - esp high freqs

vertical localization

Question 9

dB scale ref value

Answer 9

threshold of human hearing

Question 10

purposes of ear canal

Answer 10

protects ear from foreign bodies, humidity, temp changes, etc.

natural resonant freqs = key freqs for speech

Question 11

purpose of the TM/ear drum

Answer 11

transduce air pressure waves into mechanical vibrations in the ear

Question 12

purpose of the ossicles

Answer 12

impedance matching

Question 13

purpose of middle ear muscles

Answer 13

reducing transmission of low freqs during chewing or speech

improves speech in noise perception

Question 14

how does the cochlea work

Answer 14

stapes motion causes fluid displacement

creates traveling wave along basilar membrane

Question 15

cochlear nucleus

Answer 15

only ipsilateral connections

has 5 different types of cells that all encode different types of freq info

Question 16

sensorineural hearing loss

Answer 16

cochlea or AN are damages

outer & middle ear intact

bone conduction affected

sound is quieter & distorted
tinnitus

Question 17

A-weighting gives more weight to

Answer 17

high freqs

Question 18

transfer function

Answer 18

describes how the amplitudes of different freqs in a signal (liek speech)

are changed by a system (like the ear canal)

Question 19

purpose of case history

Answer 19

patient’s subjective account of symptoms

life account & factors that could contribute to condition

determine goals

Question 20

soundbooths must meet international standards

true or false

Answer 20

true

Question 21

0 dB HL = normal hearing @ all freqs

true or false

Answer 21

true

Question 22

0 dB SPL = normal hearing at all freqs

true or false

Answer 22

false

Question 23

pathology in the middle ear

Answer 23

conductive hearing loss

Question 24

pathology in the inner ear

Answer 24

sensorineural hearing loss

Question 25

when to use warbled tones

Answer 25

kids

people w/ disabilities

hearing aid or cochlear implant testing

in a soundfield - to avoid standing waves