Question 1

The "where" pathway for audition includes the core regions,
A)the belt and parabelt regions,and the anterior parts of the temporal cortex.
B)the posterior parts of the auditory cortex,and the posterior parietal cortex.
C)as well as the anterior parts of the auditory cortex.

Accepted Answer

The "where" pathway for audition involves processing the spatial location of sounds, and it includes the posterior parts of the auditory cortex and the posterior parietal cortex. These areas are involved in locating where a sound is coming from in space.

Question 2

Which of the following receives inputs from the auditory core region?
A)the belt
B)the rostral core
C)the rostrotemporal core

Accepted Answer

The belt region receives inputs from the auditory core region, acting as a secondary processing area that further analyzes auditory information received from the core before it is processed by tertiary auditory regions and other areas of the brain.

Question 3

The auditory pathway plays a role in modulating the motile response,activating the acoustic reflex,and blocking task-irrelevant ascending auditory signals.
A)ascending
B)descending
C)lateral

Accepted Answer

The modulation of the motile response and activation of the acoustic reflex require a descending pathway from the auditory cortex to the brainstem. Additionally, the auditory pathway can block task-irrelevant ascending auditory signals through descending inhibition from the cortex to the thalamus. Therefore, the best choice is descending.

Question 4

The pathway for audition includes the core regions,the posterior parts of the auditory cortex,and the posterior parietal cortex.
A)"what"
B)"where"
C)"why"

Accepted Answer

The pathway outlined in the statement is commonly known as the "what" and "where" pathway. The core regions of the auditory cortex represent the "what" pathway, processing the specific details of sound such as pitch and timbre. Meanwhile, the posterior parietal cortex represents the "where" pathway, processing the spatial location of sound sources. The posterior parts of the auditory cortex and the posterior parietal cortex both contribute to the "where" pathway.

Question 5

An acoustic shadow has a much greater effect for
A)high-frequency sounds.
B)low-frequency sounds.
C)loud sounds.

Accepted Answer

High-frequency sounds have shorter wavelengths and are more easily blocked by obstacles, creating an acoustic shadow, whereas low-frequency sounds with longer wavelengths can bend around obstacles more easily.

Question 6

The is found in the midbrain.
A)medial geniculate body
B)superior olivary complex
C)inferior colliculus

Accepted Answer

The inferior colliculus is a structure found in the midbrain that plays a key role in auditory processing, specifically in the integration of different sound inputs to form a cohesive auditory experience. The medial geniculate body and superior olivary complex are also involved in auditory processing, but they are located in the thalamus and the brainstem, respectively.

Question 7

An acoustic shadow occurs when the sound source is located
A)on the median plane.
B)to the listener's left or right.
C)directly in front of the head.

Accepted Answer

An acoustic shadow occurs when sound waves are obstructed or diffracted, leading to a reduction in sound intensity. When a sound source is to the listener's left or right, the head itself can create an acoustic shadow for the ear that is farther away from the sound source, affecting how the sound is perceived.

Question 8

In the ,posterior neurons have characteristic frequencies.
A)rostral core;low
B)rostral core;high
C)rostrotemporal core;low

Accepted Answer

The answer of In the ,posterior neurons have characteristic frequencies.
A)rostral...

Question 9

The intensity of a sound decreases with the distance from the sound source such that there is an intensity difference between the sound reaching the left and right ears when the sound source is not located on the median plane.This effect is significant when the sound source is located
A)far from the head.
B)near to the head.
C)directly in front of the head.

Accepted Answer

When the sound source is near to the head, the intensity difference between the sound reaching the left and right ears is more significant due to the shorter distance between the ears. As the sound source moves further away, the difference in intensity between the two ears decreases. If the sound source is directly in front of the head, the intensity difference is minimized since both ears receive the same intensity of sound.

Question 10

Which of the following is part of the auditory core region?
A)the belt
B)the parabelt
C)the rostrotemporal core

Accepted Answer

The rostrotemporal core is part of the auditory core region, which is essential for processing basic auditory information. The belt and parabelt are considered to be part of the auditory association areas, which are involved in more complex processing of sounds.

Question 11

The pathway for audition includes the core regions,the belt and parabelt,and the ante- rior parts of the temporal cortex.
A)"who"
B)"what"
C)"where"

Accepted Answer

The "what" pathway in audition is involved in identifying and recognizing sounds, which involves the core regions, belt, parabelt, and anterior parts of the temporal cortex.

Question 12

The main ascending auditory pathway from the right ear includes the ipsilateral cochlear nucleus,
A)the contralateral cochlear nucleus,and the contralateral auditory cortex.
B)the ipsilateral superior olivary complex,and the ipsilateral auditory cortex.
C)the contralateral inferior colliculus,and the contralateral auditory cortex.

Accepted Answer

The main ascending auditory pathway from the ear involves the ipsilateral cochlear nucleus, then crosses over to the contralateral (opposite) side of the brain, involving structures such as the contralateral inferior colliculus, and finally projects to the contralateral auditory cortex. This pathway ensures that sound from either ear can be processed by both hemispheres of the brain.

Question 13

Sound localization in the dimension involves azimuth.
A)front-to-back
B)side-to-side
C)up-down

Accepted Answer

Azimuth refers to the angle of a sound source in the horizontal plane, so side-to-side localization is the best choice. Front-to-back localization involves the dimension of elevation, while up-down localization involves the dimension of altitude.

Question 14

In the ,posterior neurons have characteristic frequencies.
A)rostral and rostrotemporal cores;low
B)rostral and rostrotemporal cores;high
C)primary auditory cortex and the rostrotemporal core;high

Accepted Answer

The statement mentions that posterior neurons have characteristic frequencies, and mentions two specific regions, the primary auditory cortex and the rostrotemporal core. It also states that these neurons have "high" characteristic frequencies. Therefore, the best choice is C, which includes both the primary auditory cortex and the rostrotemporal core, and specifies that their characteristic frequencies are high.

Question 15

The is found in the brain stem.
A)medial geniculate body
B)superior olivary complex
C)inferior colliculus

Accepted Answer

The superior olivary complex is located in the brain stem and plays a crucial role in auditory processing, including sound localization.

Question 16

Tonotopic maps in the auditory core regions have shown that
A)the characteristic frequencies of the neurons gradually shift from lower at one end to higher at the other end.
B)the characteristic frequencies of the neurons appear to be randomly determined.
C)the arrangement of neurons is related to temporal coding but not to place coding along the basilar membrane.

Accepted Answer

Tonotopic maps are organized according to the frequency selectivity of specific groups of neurons in the auditory core regions of the brain. These maps show that the arrangement of neurons is orderly, with the characteristic frequencies of the neurons gradually shifting from lower at one end to higher at the other end. This suggests that the auditory system uses place coding, where different frequencies of sound are represented at different locations along the basilar membrane in the cochlea, and this is reflected in the tonotopic maps in the brain.

Question 17

The secondary ascending auditory pathway from the right ear includes the ipsilateral cochlear nucleus,
A)the contralateral cochlear nucleus,and the contralateral auditory cortex.
B)the ipsilateral superior olivary complex,and the ipsilateral auditory cortex.
C)the contralateral inferior colliculus,and the contralateral auditory cortex.

Accepted Answer

The secondary ascending auditory pathway from the right ear includes the ipsilateral cochlear nucleus and superior olivary complex before reaching the ipsilateral auditory cortex. There is no involvement of the contralateral cochlear nucleus or inferior colliculus in this pathway.

Question 18

A broadly tuned neuron in the auditory cortex has
A)one characteristic frequency.
B)two characteristic frequencies.
C)multiple characteristic frequencies.

Accepted Answer

The answer of A broadly tuned neuron in the auditory...

Question 19

The main ascending auditory pathway from the right ear includes the ipsilateral cochlear nucleus and
A)the contralateral cochlear nucleus.
B)the ipsilateral superior olivary complex.
C)the contralateral inferior colliculus.

Accepted Answer

The main ascending auditory pathway involves crossing over to the opposite side of the brain, so the signal from the right ear will eventually reach the contralateral inferior colliculus.

Question 20

The ascending auditory pathway goes,in order,from inner hair cells to Type I auditory nerve fibers to
A)the contralateral cochlear nucleus.
B)the ipsilateral cochlear nucleus.
C)the contralateral inferior colliculus.

Accepted Answer

The ascending auditory pathway goes from the inner hair cells to Type I auditory nerve fibers, which then project to the ipsilateral cochlear nucleus. From there, the signal can travel to higher auditory centers in the brain. The contralateral cochlear nucleus and contralateral inferior colliculus are also part of the ascending auditory pathway, but they are not the next step after the Type I auditory nerve fibers.

Quiz 10: The Auditory Brain and Perceiving Auditory Scenes

The "where" pathway for audition includes the core regions,

Which of the following receives inputs from the auditory core region?

The auditory pathway plays a role in modulating the motile response,activating the acoustic reflex,and blocking task-irrelevant ascending auditory signals.

The pathway for audition includes the core regions,the posterior parts of the auditory cortex,and the posterior parietal cortex.

An acoustic shadow has a much greater effect for

The is found in the midbrain.

An acoustic shadow occurs when the sound source is located

In the ,posterior neurons have characteristic frequencies.

The intensity of a sound decreases with the distance from the sound source such that there is an intensity difference between the sound reaching the left and right ears when the sound source is not located on the median plane.This effect is significant when the sound source is located

Which of the following is part of the auditory core region?

The pathway for audition includes the core regions,the belt and parabelt,and the ante- rior parts of the temporal cortex.

The main ascending auditory pathway from the right ear includes the ipsilateral cochlear nucleus,

Sound localization in the dimension involves azimuth.

In the ,posterior neurons have characteristic frequencies.

The is found in the brain stem.

Tonotopic maps in the auditory core regions have shown that

The secondary ascending auditory pathway from the right ear includes the ipsilateral cochlear nucleus,

A broadly tuned neuron in the auditory cortex has

The main ascending auditory pathway from the right ear includes the ipsilateral cochlear nucleus and

The ascending auditory pathway goes,in order,from inner hair cells to Type I auditory nerve fibers to