4.3 Hearing Flashcards Preview

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Flashcards in 4.3 Hearing Deck (15):
1

wavelength of the sound wave (known as frequency)

measured in terms of the number of waves that arrive per second and determines our perception of pitch

2

pitch

the perceived frequency of a sound

3

amplitude

height of the sound wave

4

loudness

the degree of sound volume

5

decibel

the unit of relative loudness

6

pinna

the external and visible part of the ear

7

tympanic membrane (eardrum)

the tightly stretched, highly sensitive membrane

8

cochlea

a snail-shaped liquid-filled tube in the inner ear

9

oval window

the membrane covering the opening of the cochlea

10

frequency theory of hearing

proposes that whatever the pitch of a sound wave, nerve impulses of a corresponding frequency will be sent to the auditory nerve

11

place theory of hearing

proposes that different areas of the cochlea respond to different frequencies

12

Conductive hearing loss

caused by physical damage to the ear (such as to the eardrums or ossicles) that reduce the ability of the ear to transfer vibrations from the outer ear to the inner ear

13

Sensorineural hearing loss

which is caused by damage to the cilia or to the auditory nerve, is less common overall but frequently occurs with age

14

tinnitus

a ringing or a buzzing sensation

15

cochlear implant

a device made up of a series of electrodes that are placed inside the cochlea

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