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CSD > CSD Quiz 4 > Flashcards

CSD Quiz 4 Flashcards

1
Q

Vibrations Definition

A

Periodic motion of molecules from a state of rest.

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2
Q

What do vibrations consist of?

A

rarefactions and compressions of molecules

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3
Q

What are the two types of vibrations/waves?

A

Longitudinal and Transverse

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4
Q

What are longitudinal waves?

A

Longitudinal waves produce compressions and rarefactions which change pressure and intensity as they pass through a medium.
MOVES LEFT TO RIGHT

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5
Q

What are transverse waves?

A

Transverse waves consist of cresta and troughs as they propagate through solids with no variation in pressure or density of the medium
MOVES UP AND DOWN

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6
Q

What is intensity? How is it related to loudness? What is the unit of measurement of intensity?

A

Loudness is the amplitude or the intensity of vibration. Intensity and loudness are measured in varied units.

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7
Q

What is frequency? How is it related to pitch? What is the unit of measurement of frequency?

A

Pitch is the frequency of vibration, measured in Hertz (Hz) which is a cycle per second (cps)

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8
Q

Three types of hearing loss

A

Conductive hearing loss
Sensorineural hearing loss
Mixed hearing loss

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9
Q

Which parts of the ear are affected in each type of hearing loss?

A

Conductive hearing loss- outer or middle ear
Sensorineural hearing loss- inner ear or beyond
Mixed hearing loss- all parts of ear

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10
Q

What are some examples of causes for each type of loss?

A

Conductive hearing loss- Microtia, Atresia, Cerumen, Otitis media.
Sensorineural hearing loss- aplasia, syndromes and infections ex. Rubella or meningitis, ototoxicity, NIHL, and Presbycusis
Mixed hearing loss- both conductive hearing loss and sensorineural hearing loss.

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11
Q

What do we know about the treatability of the distinct types of hearing losses?

A

Conductive- usually treatable
Sensorineural- usually permanent, not medically treatable
Mixed- never completely treatable.

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12
Q

Which classification of sensorineural hearing loss is of interest to CSD professionals who work with children?

A

Prelingual or post lingual

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13
Q

What are the two types of threshold shifts? When might they occur and how might they change over time?

A

Temporary Threshold Shifts and Permanent Threshold Shifts.
Temporary occurs after exposure to intense noise. Permanent occurs after consistent exposure to intense noise.
Temporary has chance to become permanent.

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14
Q

How is acoustic trauma caused? How does acoustic trauma show upon an audiogram?

A

Acoustic trauma is NIHL from impulsive sounds ex. Truck Drivers, Hunters
Typical acoustic notch on audiogram (from 4k-6k Hz)

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15
Q

Which instrument is used to measure noise exposure? What might it tell us?

A

Sound level meter or dosimeter. Tells us the sound intensity at any given moment.

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16
Q

What are the three ways to control noise? Think of two distinct examples in which each of the ways to control can be used.

A

Three ways to control noise are control at source, control transmission, and protect at ear level.
Control at source- Modify equipment to reduce vibrations and maintain quieter machines.
Control transmission- putting carpet in rooms to absorb sound, closing the window to create a barrier between noise outside and inside.
Protect at ear level- ear plugs and turn down the volume.

17
Q

Presbycusis-

A

Age Induced Hearing Loss

18
Q

How should one talk with someone who has presbycusis?

A

Speak slower rather than louder with these people.

19
Q

How can an audiologist help people with presbycusis?

A

Use hearing aid: body aid, BTE ITC ITE CIC, Eyeglass, BC

BTE- Behind the ear

ITC- In the canal 

ITE- In the ear 

CIC- Completely in the canal
20
Q

AC

A

Air Conduction Thresholds

21
Q

BC

A

Bone Conduction Thresholds

22
Q

CPS

A

Cycles per second

23
Q

dB

A

decibels

24
Q

EPD

A

Ear Protection Device

25
Q

HF

A

High Frequency

26
Q

LF

A

Low Frequency

27
Q

NIHL

A

Noise Induced Hearing Loss

28
Q

TTS

A

Temporary Threshold Shift

29
Q

PTS

A

Permanent Threshold Shift

30
Q

Microtia

A

Small, malformed pinna or ear canal

31
Q

Atresia

A

complete closure of canal at pinna or beyond

32
Q

ceruman

A

wax

33
Q

otitis media

A

middle ear inflammations/infections

34
Q

Standard for noise exposure

A

85 dBA for 8 hours
if you up loudness by 3 dB cut time in half

35
Q

CAPD

A

Central Auditory Processing Disorders

36
Q

What do CAPD affect?

A

Typically affects brainstem pathways/ auditory cortex
Hearing thresholds may be normal, but ability to use and interpret auditory information is lost

CSD (4 decks)

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