C2 Lesson 4 Flashcards
Motor skills that involve arm, hand and/or finger movement to the target.
Speed- accuracy skills
Prehension
Handwriting
Bimanual coordination
Catching a moving object
Striking a moving object
The speed at which a skill is performed is influenced by movement accuracy demands. The trade-off is that increasing speed yields decreased accuracy.
Speed Accuracy Skills
showed that we could mathematically predict movement time for speed-accuracy skill.
Paul Fitts
Also demonstrated that an index of difficulty could be calculated based on this equation
log2 (2D/W)
at movement initiation
Open-loop control
at movement termination
Closed-loop control
General term for actions involving reaching for and grasping of objects.
Prehension
Three Components of Prehension
Transport
Grasp
Object Manipulation
movement of the hand to the object
Transport
the hand taking hold of the object
Grasp
the hand carrying out the intended
use for the object (e.g., drinking from it, moving it to another location).
Object manipulation
Different control mechanism are involved with what people write and how they write
Handwriting
Each individual’s motor control of handwriting demonstrate “_________”
motor equivalence
Motor skills that require simultaneous use of two arms
Bimanual coordinates Skills
Central pattern generators (CPG) in the spinal cord involved in the control of locomotion
Locomotion
