with complete solutions
Effective target width is a measure of __________.a) speed b) timing d) accuracy d)
amplitude - ANSWER-practice
what control system sends commands to the effector without receiving feed back and is
used for rapid, discrete movements? - ANSWER-Open-Loop control
evidence for _________ ________________ includes, electromyography
(EMG),reaction time (RT), and deafferentation. - ANSWER-motor programing
The motor program fails to explain ? - ANSWER-Novel tasks and storage problems
____________ is a centrally located control mechanism that produces genetic,
repetitive actions; it is similar to a motor program and triggered by some stimulus and
seems to use patterns for activation. - ANSWER-A central pattern generator
____________ theory suggests that there is a stored pattern of movement instead of a
specific movement. It allows flexibility in modifying the generalized program to produce
various patterns to meet the demands of the task. - ANSWER-Generalized motor
program
_____________ is a surgical procedure in which a bundle of nerves is severed and
results in the prevention of nerve impulses reaching the spinal cord; animal experiments
using this surgery provide evidence for motor programs. - ANSWER-Deafferentation
Fitts' Law states that __________ is linearly related to index of difficulty (ID). -
ANSWER-Movement time (MT)
Effective target width is a measure of __________. - ANSWER-accuracy
The major roles of open-loop organizations in motor programs include all of the
following except
, Answers:
(A) define and issue commands to the musculature
(B)organize degrees of freedom of the muscles and joints into a single unit
(C)prevent postural adjustments in preparation for action
(D)modulate reflex pathways to ensure achievement of the movement goal - ANSWER-
C
Fitts' Law tells us all of the following except
Answers:
(A)MT decreases as movement amplitude increases
(B)MT increases as the target width decreases
(C)MT increases as the aiming accuracy requirement increases
(D)the principles of Fitts' Law are valid for a variety of body parts used - ANSWER-A
A(n) __________ coordination pattern is more stable. - ANSWER-in-phase
____________ is accuracy expressed as the amount of spread or inconsistency of the
movement end points about the target area. - ANSWER-effective target width
When the timing of performance of a rapid movement is important,__________ is the
type of accuracy required - ANSWER-temporal accuracy
When a person attempts to produce the same force on repeated trials, __________ is
thought to be caused by relatively noisy processes that convert central nervous system
impulses into activation of muscle motor units.
a) stability
b) variability
c) auditory distraction
d) timing consistency - ANSWER-b) variability
Visual illusions can create different perceptions of a target, but the ________ remains
the same. - ANSWER-actual size of target
A(n) __________ coordination pattern is more stable.
a) in-phase
b) anti-phase
c) 90 degree