Chapter 7 Flashcards
What is the speed accuracy trade off?
accuracy requirements of a movement will influence movement speed. Can be a trade off of accuracy for speed and vise versa.
What does Fitt’s Law predict?
movement time through the use of mathematics
What does the mathematical equation need for Fitt’s Law?
distance and target size
What is Fitt’s equation?
MT = a + b log2(2D/W)
Three phases of movement
Preparation Phase
Initial Flight Phase
Termination Phase
What movement phase makes the person decide to perform the skill involving the speed accuracy trade off?
Preparation Phase
What is the first movement of the movement phase where the limb movement is in the direction of the target?
Initial Flight Phase
What part of the moment phase is just before the hitting of the target?
Termination Phase
Based off of the movement phases, what does the open loop control do?
moves the limb to the vicinity of the target
Based off of the movement phases, what does the closed loop control do?
uses feedback at the “termination phase” to tell the limb how inaccurate it is.
What are the three components of prehension?
Transport
Grasp
Object manipulation
What is prehension?
movement of reaching for and grasping for an object
Transport
movement of hand to object
Grasp
hand taking the object
Object manipulation
the hand carrying out the intended use for the object
