Chapter 5: Principles of Motor Control and Movement Accuracy

Question 1

What is an invariance in motor control?

Answer 1

Charcateristics that do not change

Question 2

Explain how the speed and amplitude of a movement can influence movement accuracy

Question 3

Why do we tend to make mistakes when we “rush” a
performance?

Answer 3

As we speed up we become less accurate

Question 4

Timing Structure
(invariant feature)

Answer 4

specific sequences of muscle activation

(Throwing a ball—Same thing just diffrenet sequences of muscle contraction)
(Order and timing is key)

Question 5

Relative Timing

Answer 5

relative speeds of the components in a task

while total speed of the whole movement may vary, the relative speeds of the components do not vary (invariant)

These components happen in the same order regardless of movement speed, and movement time for each component remains proportionate to the other components

Question 6

Comparing Movements as a Set of Ratios

Answer 6

ratio of the activity amplitudes for each of the muscle groups
remains the same!

—”Finger print” of a motor program—
—It what makes it that speciififc GMP—

Question 7

Errors on Generation of motion

Question 8

………….

Question 9

How do you calculate ID?

Answer 9

log2(2A/W)