Measurement of motor behavior Flashcards
(47 cards)
Measures the outcome or results of performing a motor skill
performance outcome measure
What are some performance outcome measures?
time to complete task
reaction time
distance covered
errors
measures performance of characteristics that produced the outcome
performance production measures
what are some performance production measures?
velocity
acc.
jt. angle
force
tells how NS and muscular system are functioning
What are the most commonly used measures ?
kinematics of movement.
outcomes of movement
muscle performance via EMG
visualizing brain function during motion
description of pure motion without regard for forces and masses involved
kinematics
What can kinematics be broken down into?
spatial and temporal components
What are spatial properties?
path length
path shape (trajectory)
plane of movement
Distance Traveled
what are Temporal properties
velocity during movement
jt. coordination
movement duration
inability to produce motor planning on command
apraxia
In spatial properties study, what was seen with pathway of control group vs apraxic group?
control: linear
apraxic: circular in frontal plane
What does the circular pathway of the apraxic group in the spatial properties study tell us?
shoulder elbow and wrist not moving in organized manner
What did pts do in the temporal properties study?
draw triangles
What was found in the temporal property study?
velocity of movement was the same but hemiparetic group crosses zero more frequently in acceleration.
what is significant about the hemiparetic group crossing zero more often?
it means the task may have taken longer
what happened in the bread slicing study?
control group had linear velocity and apraxic group showed dissociation of inter-joint coordination
what does giving apraxic pt both object and tool do?
it can ameliorate space to help eliminate apraxic movement. resulting in comparable results to control to accomplish task.
has a defined start and end point
discrete task
average magnitude of error in movement performance..
what does it take into account?
constant error
direction
measures magnitude of error in movement performance without taking direction into account
absolute error
measures consistency or inconsistency of responses
variable errors
measures deviation and consistency
root mean square error
what else does root mean square measure?
what can you create from it?
difference between target trajectory and actual trajectory over time
performance curve
has multiple stimuli but each has a different response
choice reaction time