Lecture 8 - Auditory System - Quiz 1

Question 1

T/F - “Sound” consists of time-varying pressure that propagates through the air

Answer 1

True

Question 2

T/F - In the human ear, sound is encoded as frequency and intensity

Answer 2

True

Question 3

T/F - Mechanoelectrical transduction is the process of changing mechanical movement of structures in the ear into electrical signals in neurons

Answer 3

True

Question 4

T/F - External sound generates a wave of displacement of the basilar membrane in the cochlea

Answer 4

True

Question 5

Which structures are involved in hearing?

Answer 5

Cochlea, tympanum, malleus, stapes

Question 6

What is Brownian motion?

Answer 6

Random motion due to the temperature of a fluid

Question 7

What structure of the ear contains approximately 16,000 hair cells?

Answer 7

Organ of Corti

Question 8

Mechanoelectrical transduction occurs via what type of cells in the cochlea?

Answer 8

Hair cells

Question 9

T/F - The hair cells located in the organ of Corti are located along the length of the basilar membrane

Answer 9

True

Question 10

T/F - There are five different types of hair cells located in the organ of Corti

Answer 10

False

Question 11

T/F - The outer hair cells located in the organ of Corti receive more signals from the brain than from sensory input

Answer 11

True

Question 12

T/F - The firing rate of the inner hair cells located in the organ of Corti is linear with the sound pressure level

Answer 12

True

Question 13

T/F - Most of the synapses in the cochlea are from inner hair cells onto ganglion cells

Answer 13

True

Question 14

The significant subcortical processing of auditory input is related to what?

Answer 14

Sound localization, echo suppression, and sound frequency.

Question 15

Where is the primary auditory cortex (AI) located?

Answer 15

The superior olivary nucleii

Question 16

The Wernicke-Geschwind model of language fails to include the potential contribution of what?

Answer 16

Subcortical structures