Variability

Question 1

Traditional Approach to Studying Variability

Answer 1

Variations within and across subjects are considered “noise” or “error”

Question 2

Dynamic Action Perspective on variability:

Answer 2

Variation within an individual is an integral part of motor control

Question 3

What theory of motor control suggests that when you see a patient exhibiting variability in their movement pattern, that may present an opportunity to help them learn a new, more adaptive, pattern

Answer 3

Dynamic Action Theory

(Dynamic Systems theory)

Question 4

True or false: when measuring postural postural sway in infants sitting, those who had development delay showed less variability, more stereotyped behavior

Answer 4

true

Question 5

Task-Oriented Approach; stroke patient with gait limitations

Answer 5

1. Have patient demonstrate his solution to walking
2. Evaluate its variability and efficiency, and whether it is flexible enough to use under widely varying conditions
3. Set up the environment to provide safe place for guided exploration, encouraging different ways to move
4. Address impairments that limit performance of new patterns that may be more adaptive and adaptable
5. Use complex tasks to encourage patient to learn new flexible task solutions, highlighting instances where variable performance leads to new form of success

Question 6

Stroke patient with gait limitations; traditional approach …

Answer 6

1. Teach ideal movement patterns for walking and sit-to-stand
2. Address impairments that limit performance of the ideal patterns
3. Have patient practice, correcting mistakes frequently during early practice, less often as skill progresses
4. Gradually increase task complexity

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