4.3- Auditory and Vestibular System

Question 1

cochlea

Answer 1

a fluid filled membrane that is coiled in a snail-like shape and contains the structures that convert sound into neural impulses

Question 2

frequency theory

Answer 2

the perception of pitch is related to the frequency at which the basilar membrane vibrates (70-H2 sound stimulates the hair cells 70 times per second)

Question 3

pitch

Answer 3

is the perceptual experience of sound wave frequencies

Question 4

place theory of hearing

Answer 4

how we perceive pitch is based on the location (place) along the basilar membrane that sound stimulates

Question 5

primary auditory cortex

Answer 5

a major perceptual centre of the brain involved in perceiving what we hear

Question 6

the semicircular canals

Answer 6

are three fluid-filled canals found in the inner ear that respond when your head moves in different directions (up-down, left-right, forward-backward)

Question 7

sound localization

Answer 7

the process of identifying where sound comes from

Question 8

vestibular sacs

Answer 8

structures that influence your ability to detect when your head is no longer in an upright position

Question 9

vestibular system

Answer 9

a sensory system in the ear that provides information about spatial orientation of the head as well as head motion (sense of balance)