Movement And Percision

Question 1

What is open loop?

Answer 1

Motor programme controlled movements

Question 2

What is closed loop?

Answer 2

Feedback controlled movement

Question 3

Precision.

When to use open loop or closed loop depends on?

Answer 3

How fast
Stability
What trying to do
How skilled
How confident

Question 4

What is the speed accuracy trade off?

Answer 4

Faster speed = less accuracy

Question 5

What type of movement is:

Closed loop
Time for feedback
Make use of feedback
Less errors

Answer 5

Slow movements

Question 6

What type of movements are:

Open loop
No time for feedback
Or can’t make time for feedback
More errors

Answer 6

Fast movements

Question 7

What is loop comes under fitts law?

Answer 7

Closed

Question 8

What is fitts law?

Answer 8

MT is linearly related to the difficulty.

Question 9

Explanation of fitts law?

Answer 9

Observation on a target
-MT increases and the (A)mplitude increases.

-MT increases as the accuracy increases ( (W)idth decreases)

MT is constant

Question 10

What are the sporting applications to closed loops?

Answer 10

Accuracy is the goal slow the speed

When accuracy is the goal reduce the amplitude- move closer

Question 11

What loop is error in ballistic movements caused by?

Answer 11

Open

Question 12

Explanation of error in ballistic movements

Answer 12

Movement trajectory is determined by the force (no. of participating muscle

More force = more variability = more errors

MT decreases more force is required

A increases more force is required