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KNH184 EXAM 3 QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS VERIFIED LATEST UPDATE
GRADED A++ 2025/2026
Terms in this set (134)
how does sensory reflex reversal phenomenon
feedback
influence open
loop control?
decerebrate cat:
- touch top of the cat's foot during
the flexion stage of walking --> leg
reflex reversal flexes even more
phenomenon - touch top of the cat's foot during
planting stage of walking --> leg
extends even more
- reflex is non conscious and fast (30-50
ms)
why is there an - CPG is set to respond automatically at
opposite effect different phases of the step cycle
from the same - if any stimulation is received,
stimulus with the the CPG strengthens the
decerebrate cat? response presently
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programmed
- skilled actions must be specified
during programming to include:
problems in motor appropriate muscles, muscle
program theory contraction sequence, muscle
forces, relative timing of muscular
contractions, and duration of
muscular contractions.
- 2 problems with standard motor
program theory - if every specific
action requires a specific motor
program: novelty problem and
storage problem
novelty problem how are novel movements performed the
first time?
storage problem how/where can all the millions of motor
programs be stored?
- Richard Schmidt (1975) proposed
that a generalized motor program
controls a class of actions rather
generalize motor than specific movements or
program theory sequences, class of actions,
invariant features, one motor
program for a class of actions. There
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are also aspects which can change
from one performance to another
(e.g. the distance of a throw)
- In GMP, some things change
(parameters/surface features) and
some things stay the same
(invariant features)
Richard Schmidt proposed that a generalized motor
(1975) program controls a class of actions
rather than specific movements or
sequences
class of actions set of different actions having a common
but unique set of invariant features
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invariant features in all motor programs there are
features which are basic to the
program; they do not change
movement movement can change as we require
parameters (surface
features)
handwriting:
- invariant features
- our own writing
style 'sameness'
(e.g. how we write
the letter "K")
- parameters - size of the writing,
how quickly we write, what
examples of appendage we use to write, etc.
generalize motor
programs tennis stroke:
- invariant features - summation of forces
from large muscles to small
- parameters - how far we hit, put spin on
ball
kicking
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