Chapter 3 Flashcards
Closed loop control
feedback, when executing a plan, we get feedback on what to do better
Open loop control
no feedback, just execute plan with no feedback
Invariant features
sequence of actions, relative timing, and relative force
Sequence of actions
An american football punt sequence is catch, approach, drop, kick.
Relative timing
When you swing to hit a volleyball during a serve must be relative to the timing of your toss
Relative force
The force of your foot making contact with a ball during a kick should be relative to the force with which you approached the ball and the movement of your leg
Parameters
Muscle selection, overall duration, overall force
muscle selection
the GMP is the same for throwing with your left hand as it is for throwing with your right hand
overall duration
the GMP is the same for running slowly as it is for running faster
overall force
the GMP is the same for batting with more overall force as it is for batting with less overall force
Speed Accuracy Trade-off
tendency for accuracy to be compromised when speed is increased or speed to decrease when focusing on accuracy
affordances
the action possibilities of the environment and task in relation to the perceiver’s own capabilities
attractor
a preferred state of stability toward which a system spontaneously shifts
constraints
boundaries that limit a person’s movement capabilities
Dynamic systems approach
a perspective that addresses the interplay of the environment, task, and individual on skilled movement.
