Question 1

The area of association cortex that is thought to integrate the spatial information that is required to initiate an accurate movement is the __________ cortex.

Accepted Answer

The answer of The area of association cortex that is...

Question 2

Which of the following helps distribute the work between different motor neurons of a muscle's motor pool?

Accepted Answer

A)   cocontraction
B)   recurrent collateral inhibition
C)   reciprocal inhibition
D)   muscle-spindle feedback
E)   withdrawal reflexF) All of the above
G) C) and D)

Question 3

Many aspects of the sensory motor system are demonstrated by the chapter-ending PET study of Jenkins and colleagues.Describe their methods,four major results,and the conclusions based on them.Illustrate the results with a drawing of the study.

Accepted Answer

20% for describing the methods...

Question 4

Like the sensory systems,the sensorimotor system is

Accepted Answer

A)   hierarchical.
B)   parallel.
C)   functionally segregated.
D)   all of the above
E)   none of the aboveF) C) and D)
G) A) and D)

Question 5

Which structure is thought to be involved in the integration of the sensory information that is the basis for initiating a movement?

Accepted Answer

A)   posterior parietal cortex
B)   primary somatosensory cortex
C)   primary auditory cortex
D)   frontal cortex
E)   primary visual cortexF) C) and E)
G) A) and B)

Question 6

Two muscles whose contraction produces the same movement of a joint are said to be __________ muscles.

Accepted Answer

The answer of Two muscles whose contraction produces the same...

Question 7

In the classic transection experiments of Lawrence and Kuypers,monkeys with all their dorsolateral motor pathways transected sat with their arms hanging limply by their sides.However,these same monkeys had no difficulty

Accepted Answer

A)   picking up pieces of food and then releasing them.
B)   using their arms for standing, walking, and climbing.
C)   reaching for moving objects.
D)   moving their fingers independently.
E)   all of the aboveF) C) and E)
G) C) and D)

Question 8

Which of the following is a principle of sensorimotor organization?

Accepted Answer

A)   The sensorimotor system is hierarchically organized.
B)   Motor output is guided by sensory input.
C)   Learning changes the nature and locus of sensorimotor control.
D)   all of the above
E)   both B and CF) B) and E)
G) A) and B)

Question 9

Which of the following requires an inhibitory interneuron?

Accepted Answer

A)   reciprocal innervation
B)   recurrent collateral inhibition
C)   isometric contraction
D)   all of the above
E)   both A and BF) C) and D)
G) A) and E)

Question 10

In the primary motor cortex,the neurons that participate in the movement of a particular finger are

Accepted Answer

A)   located in one somatotopically segregated finger area.
B)   widely distributed over the somatotopic hand area.
C)   all located in a single column.
D)   all located in the left parietal lobe.
E)   all located in the right parietal lobe.F) B) and D)
G) C) and D)

Question 11

Much of the output of the posterior parietal cortex goes to the

Accepted Answer

A)   dorsolateral prefrontal association cortex.
B)   frontal eye fields.
C)   various areas of secondary motor cortex.
D)   all of the above
E)   both B and CF) C) and D)
G) B) and E)

Question 12

The dorsolateral prefrontal association cortex

Accepted Answer

A)   appears to be important in the initiation of complex voluntary movements.
B)   sends projections to the primary and secondary motor cortices.
C)   plays a critical role in the elicitation and blocking of reflexes.
D)   both A and B
E)   both B and CF) A) and E)
G) B) and E)

Question 13

Only primates and a few other species,such as hamsters and raccoons,have cortical neurons that synapse directly on

Accepted Answer

A)   muscles.
B)   muscles of the fingers and thumb.
C)   motor neurons that project to the muscles of the fingers and thumb.
D)   spinal interneurons.
E)   targets in the PNS.F) A) and D)
G) C) and D)

Question 14

The __________ constitutes about 10% of the brains total mass but includes over half its neurons.

Accepted Answer

The answer of The __________ constitutes about 10% of the...

Question 15

According to current theory,the sensorimotor system

Accepted Answer

A)   is largely ballistic.
B)   is largely, if not entirely, ipsilateral.
C)   comprises a hierarchy of central sensorimotor programs.
D)   all of the above
E)   both A and BF) B) and C)
G) C) and D)

Question 16

In 1937,the primary motor cortex was mapped by electrically stimulating the cortex of conscious human patients who were undergoing neurosurgery.This was accomplished by

Accepted Answer

A)   Hebb.
B)   Pinel.
C)   Jackson.
D)   Penfield and Boldrey.
E)   Sperry.F) A) and D)
G) B) and C)

Question 17

In general,the dorsolateral corticospinal tract controls the muscles of the

Accepted Answer

A)   thighs.
B)   body core.
C)   hands and feet.
D)   proximal limbs.
E)   legs.F) All of the above
G) A) and D)

Question 18

The supplementary motor area and the premotor cortex are in the

Accepted Answer

A)   frontal lobe.
B)   temporal lobe.
C)   parietal lobe.
D)   occipital lobe.
E)   limbic lobe.F) C) and E)
G) B) and C)

Question 19

Which of the following is a major finding of the Jenkins and colleagues PET study of motor learning?

Accepted Answer

A)   Posterior parietal cortex was more activated during the performance of both newly learned sequences than during the performance of well-practiced sequences.
B)   Dorsolateral prefrontal cortex was activated during the performance of newly learned but not well-practiced sequences.
C)   The cerebellum was activated during both newly learned and well-practiced sequences but more during newly learned sequences.
D)   Contralateral primary motor and somatosensory cortices were equally activated during the performance of newly learned and well-practiced sequences.
E)   all of the aboveF) C) and D)
G) B) and E)

Question 20

Apraxia is usually caused by lesions to the

Accepted Answer

A)   the left parietal lobe.
B)   the right parietal lobe.
C)   the right primary motor cortex.
D)   the right secondary motor cortex.
E)   either temporal lobe.F) D) and E)
G) All of the above

Exam 8: The Sensorimotor System

In the classic transection experiments of Lawrence and Kuypers,monkeys with all their dorsolateral motor pathways transected sat with their arms hanging limply by their sides.However,these same monkeys had no difficulty

Correct AnswerverifiedShow Answer

Like the sensory systems,the sensorimotor system is

Correct AnswerverifiedShow Answer

According to current theory,the sensorimotor system

Correct AnswerverifiedShow Answer

In 1937,the primary motor cortex was mapped by electrically stimulating the cortex of conscious human patients who were undergoing neurosurgery.This was accomplished by

Correct AnswerverifiedShow Answer

Apraxia is usually caused by lesions to the

Correct AnswerverifiedShow Answer

Which of the following is a major finding of the Jenkins and colleagues PET study of motor learning?

Correct AnswerverifiedShow Answer

The __________ constitutes about 10% of the brains total mass but includes over half its neurons.

Correct AnswerverifiedShow Answer

Much of the output of the posterior parietal cortex goes to the

Correct AnswerverifiedShow Answer

Which of the following is a principle of sensorimotor organization?

Correct AnswerverifiedShow Answer

Which of the following helps distribute the work between different motor neurons of a muscle's motor pool?

Correct AnswerverifiedShow Answer

The area of association cortex that is thought to integrate the spatial information that is required to initiate an accurate movement is the __________ cortex.

Correct AnswerverifiedShow Answer

Which structure is thought to be involved in the integration of the sensory information that is the basis for initiating a movement?

Correct AnswerverifiedShow Answer

Which of the following requires an inhibitory interneuron?

Correct AnswerverifiedShow Answer

The supplementary motor area and the premotor cortex are in the

Correct AnswerverifiedShow Answer

Only primates and a few other species,such as hamsters and raccoons,have cortical neurons that synapse directly on

Correct AnswerverifiedShow Answer

In the primary motor cortex,the neurons that participate in the movement of a particular finger are

Correct AnswerverifiedShow Answer

Two muscles whose contraction produces the same movement of a joint are said to be __________ muscles.

Correct AnswerverifiedShow Answer

In general,the dorsolateral corticospinal tract controls the muscles of the

Correct AnswerverifiedShow Answer

Many aspects of the sensory motor system are demonstrated by the chapter-ending PET study of Jenkins and colleagues.Describe their methods,four major results,and the conclusions based on them.Illustrate the results with a drawing of the study.

Correct Answerverified20% for describing the methods...View AnswerShow Answer

The dorsolateral prefrontal association cortex

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
20% for describing the methods...
View Answer

Correct Answer
verified