UNC EXSS 380 Exam Review Actual
study Questions with correct/verified
Answers
γ-motorneuron - ANSW-Efferent innervation of the muscle spindle is provided by the _____.
closed; open - ANSW-Whereas a(an) __________ loop system utilizes peripheral information/feedback in
the refinement of neuromuscular responses, a(an) ____________ loop system is preprogrammed in
nature.
integration of multiple sensory inputs into a single stream - ANSW-Ensemble coding refers to _____.
Vestibular receptors - ANSW-_____ are not a somatosensory receptor.
Voluntary muscle contraction - ANSW-Which of the following involves the highest level of processing by
the CNS?
Anticipatory postural adjustments - ANSW-Which of the following is an example of an open loop system?
Autogenic inhibition - ANSW-Which of the following is an example of a closed loop system?
degrades joint position sense by overstimulating the Type Ia afferent - ANSW-Tendon vibration _____.
Soleus - ANSW-Which of the following muscles would "turn on" first during a voluntary shoulder flexion
task performed while standing?
75ms - ANSW-An elbow flexion task is completed over a 100ms interval during which the biceps brachii
is active for 25ms. If the overall duration of the activity is increased to 300ms, for how long would we
expect to see the biceps brachii active?
25N - ANSW-A motor control researcher estimates grip force during a task where the goal is to pick up a
mass object for which the appropriate grip and lifting forces are unknown (i.e. the weight is unknown).
During the first trial, the subject produces a force of 1N in the finger flexors, and 5N in the thumb flexors,
but is unsuccessful in picking up the object. If in the second trial the subject increases the force
produced by the finger flexors to 5N, what force would we expect to see in the thumb flexors
the spinal cord - ANSW-The central pattern generator for gait is located in ________.
somatosensory input - ANSW-In the absence of electrical stimulation, treadmill walking in the spinalized
cat with intact dorsal roots is initiated by ___________.
the amplitude of electrical stimulation of the spinal cord - ANSW-In the spinalized cat with transected
dorsal roots, the velocity of walking gait on a treadmill is determined by _____.
Task 2 - ANSW-For a simple reaction time experiment, subjects must perform two different tasks in
response to the same stimulus. The first task (Task 1) involves flexing the elbow as quickly as possible.
The second task (Task 2) involves flexing the elbow as quickly as possible to bring the index finger to a
target. For which task would we expect a longer reaction time?
, Response programming - ANSW-A motor control researcher asks subjects to perform two tasks. The
primary difference between the two tasks is that one involves more "movement parts" than the other.
Though the stimulus for each task is identical, and the subjects are aware of the movement they are to
perform, the researcher notices that the reaction time increased as the number of movement parts
increased. What stage of information processing is most likely influenced by this experiment?
Simple reaction time tests - ANSW-According to Donder's subtractive method, which of the following
experimental conditions produces the shortest reaction time?
Parallel - ANSW-If multiple sensory inputs are processed simultaneously, they are said to be processed in
_____.
upright standing - ANSW-In which of the following positions would we expect to see the smallest spinal
stretch reflex?
ability to step over an obstacle noted in the visual field - ANSW-A lesion/injury to the motor cortex
would likely have the greatest effect on which of the following locomotive functions?
overall duration - ANSW-All of the following are invariant features of motor programs except _____.
5 & 6 - ANSW-Which of the scenarios depicted above is/are indicative of vestibular function?
4 & 6 - ANSW-Which of the conditions listed are reflective of altered/incorrect somatosensory
information?
static postural control - ANSW-The ability to maintain the body's COM within a stable base of support
refers to _____.
eyes closed, foam support surface - ANSW-Which of the following scenarios would isolate the influence
of the vestibular apparatus on postural stability?
Choice reaction time with 5 stimulus-response alternatives - ANSW-In which of the following scenarios
would we expect the longest reaction time?
short-term memory - ANSW-The response selection stage of information processing takes place in
_____.
Where the body or body segment is in space - ANSW-Joint position sense refers to _____.
Ataxia - ANSW-Which of the following would likely be present during gait following lesions in the
cerebellum?
rhythmicity - ANSW-The key defining feature of locomotor activity is _____.
diminished visuo-motor coordination - ANSW-Injury to the motor cortex would result in _____ during
gait.
relative force - ANSW-All of the following are parameters of motor programs except _____.
deafferentation - ANSW-The absence of sensory input refers to _____.
Postural control - ANSW-Which of the following does not likely involve a central pattern generator?
study Questions with correct/verified
Answers
γ-motorneuron - ANSW-Efferent innervation of the muscle spindle is provided by the _____.
closed; open - ANSW-Whereas a(an) __________ loop system utilizes peripheral information/feedback in
the refinement of neuromuscular responses, a(an) ____________ loop system is preprogrammed in
nature.
integration of multiple sensory inputs into a single stream - ANSW-Ensemble coding refers to _____.
Vestibular receptors - ANSW-_____ are not a somatosensory receptor.
Voluntary muscle contraction - ANSW-Which of the following involves the highest level of processing by
the CNS?
Anticipatory postural adjustments - ANSW-Which of the following is an example of an open loop system?
Autogenic inhibition - ANSW-Which of the following is an example of a closed loop system?
degrades joint position sense by overstimulating the Type Ia afferent - ANSW-Tendon vibration _____.
Soleus - ANSW-Which of the following muscles would "turn on" first during a voluntary shoulder flexion
task performed while standing?
75ms - ANSW-An elbow flexion task is completed over a 100ms interval during which the biceps brachii
is active for 25ms. If the overall duration of the activity is increased to 300ms, for how long would we
expect to see the biceps brachii active?
25N - ANSW-A motor control researcher estimates grip force during a task where the goal is to pick up a
mass object for which the appropriate grip and lifting forces are unknown (i.e. the weight is unknown).
During the first trial, the subject produces a force of 1N in the finger flexors, and 5N in the thumb flexors,
but is unsuccessful in picking up the object. If in the second trial the subject increases the force
produced by the finger flexors to 5N, what force would we expect to see in the thumb flexors
the spinal cord - ANSW-The central pattern generator for gait is located in ________.
somatosensory input - ANSW-In the absence of electrical stimulation, treadmill walking in the spinalized
cat with intact dorsal roots is initiated by ___________.
the amplitude of electrical stimulation of the spinal cord - ANSW-In the spinalized cat with transected
dorsal roots, the velocity of walking gait on a treadmill is determined by _____.
Task 2 - ANSW-For a simple reaction time experiment, subjects must perform two different tasks in
response to the same stimulus. The first task (Task 1) involves flexing the elbow as quickly as possible.
The second task (Task 2) involves flexing the elbow as quickly as possible to bring the index finger to a
target. For which task would we expect a longer reaction time?
, Response programming - ANSW-A motor control researcher asks subjects to perform two tasks. The
primary difference between the two tasks is that one involves more "movement parts" than the other.
Though the stimulus for each task is identical, and the subjects are aware of the movement they are to
perform, the researcher notices that the reaction time increased as the number of movement parts
increased. What stage of information processing is most likely influenced by this experiment?
Simple reaction time tests - ANSW-According to Donder's subtractive method, which of the following
experimental conditions produces the shortest reaction time?
Parallel - ANSW-If multiple sensory inputs are processed simultaneously, they are said to be processed in
_____.
upright standing - ANSW-In which of the following positions would we expect to see the smallest spinal
stretch reflex?
ability to step over an obstacle noted in the visual field - ANSW-A lesion/injury to the motor cortex
would likely have the greatest effect on which of the following locomotive functions?
overall duration - ANSW-All of the following are invariant features of motor programs except _____.
5 & 6 - ANSW-Which of the scenarios depicted above is/are indicative of vestibular function?
4 & 6 - ANSW-Which of the conditions listed are reflective of altered/incorrect somatosensory
information?
static postural control - ANSW-The ability to maintain the body's COM within a stable base of support
refers to _____.
eyes closed, foam support surface - ANSW-Which of the following scenarios would isolate the influence
of the vestibular apparatus on postural stability?
Choice reaction time with 5 stimulus-response alternatives - ANSW-In which of the following scenarios
would we expect the longest reaction time?
short-term memory - ANSW-The response selection stage of information processing takes place in
_____.
Where the body or body segment is in space - ANSW-Joint position sense refers to _____.
Ataxia - ANSW-Which of the following would likely be present during gait following lesions in the
cerebellum?
rhythmicity - ANSW-The key defining feature of locomotor activity is _____.
diminished visuo-motor coordination - ANSW-Injury to the motor cortex would result in _____ during
gait.
relative force - ANSW-All of the following are parameters of motor programs except _____.
deafferentation - ANSW-The absence of sensory input refers to _____.
Postural control - ANSW-Which of the following does not likely involve a central pattern generator?
