Audition

Question 1

Audition

Answer 1

The sense of sound - requires a pressurised sound wave (stimulus) and a hair cell (receptor)

Question 2

Sound waves

Answer 2

Areas of high and low pressure in the air that have wave-like properties

Question 3

Pinna

Answer 3

Outer ear

Question 4

External Auditory Meatus

Answer 4

Ear canal

Question 5

Tympanic Membrane

Answer 5

Eardrum

Question 6

Ossicles

Answer 6

The three bones of the middle ear: malleus (hammer), incus (anvil), stapes (stirrup)

Question 7

Oval Window

Answer 7

Also known as the elliptical window; attached to the stapes; vibration causes fluid on the other side to move and displace

Question 8

Cochlea

Answer 8

The snail-shaped structure of the middle ear containing fluid; it is the site where the auditory signal becomes electrical signals

Question 9

Organ of Corti

Answer 9

An organ in the cochlea that is responsible for sound modulation; it contains the basilar and tectorial membranes that split the cochlea into two

Question 10

Auditory Nerve

Answer 10

The nerve that transports auditory signals to the brain

Question 11

Place Theory of Hearing

Answer 11

Perception of sound depends on where the frequency produces vibrations along the basilar membrane. In other words, different sound waves trigger activity at different places along the basilar membrane

Question 12

Outer ear

Answer 12

The pinna and external auditory meatus

Question 13

Middle Ear

Answer 13

The ossicles

Question 14

Inner Ear

Answer 14

Cochlea, organ of corti, and semicircular canals

Question 15

Hair bundle

Answer 15

A structure in the cochlea that is composed of filaments called kinocillium

Question 16

Auditory Processing

Answer 16

The process by which the brain interprets signals from the cochlea

Question 17

Basilar Tuning

Answer 17

Certain wavelengths activate certain areas of the cochlea. High frequencies activate closer to the base; lower frequencies activate closer to the apex

Question 18

Tonotopical Mapping

Answer 18

The ability of the brain to distinguish different frequencies based off of basilar tuning

Question 19

Primary Auditory Cortex

Answer 19

A section of the temporal lobe that receives all auditory input and processes them

Question 20

Sensory Narrow Hearing Loss

Answer 20

Nerve deafness that can be corrected with a cochlear implant (invovles the use of a transmittor that sends to a receiver which sends signals to the stimulator)

Question 21

Frequency Theory of Hearing

Answer 21

Our perception of sound is dependent on how fast the nerve cells in the cochlea fire. Faster firing => greater pitch