Auditory Processing—Perception of Volume & Pitch

Question 1

Determined by the frequency (#) of action potentials

made by hair cells

Answer 1

Sound Volume

Question 2

Volume is caused by wave height or ________.

Answer 2

amplitude

Question 3

The greater the amplitude, the _________

the sound.

Answer 3

louder

Question 4

The greater the amplitude, the bigger the vibrations in the __________ __________ are. The result: Hair cells produce _____ action potentials.

Answer 4

basilar membrane

more

Question 5

The higher the amplitude, the ________ the # of hair cells producing action potentials.

Answer 5

greater

Question 6

Base is __________ waves per second. High Frequency

Answer 6

20,000

Question 7

Apex is ________ waves per second. Low frequency

Answer 7

20

Question 8

Determined by how far the sound wave

travels down the basilar membrane. What is it?

Answer 8

Sound Pitch

Question 9

Pitch is caused by the_______ ________ or the number of waves per second.

Answer 9

wave frequency

Question 10

The ________ the frequency of waves, the higher the pitch of the sound.

Answer 10

higher

Question 11

The ________ _________ __________ is specialized to respond to different frequencies along its length

Answer 11

basilar membrane structure

Question 12

The _______ (beginning, at the oval window) is narrow and stiff: Vibrates in response to high frequency sound waves

Answer 12

base

Question 13

The ________: Gradually thins & widens toward the apex; Vibrates in response to medium frequency sound waves.

Answer 13

middle

Question 14

The ________ (end) is wide and floppy: Vibrates in response to low frequency sound waves

Answer 14

apex