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T and L Chapter 7
Performance and motor control characteristics of functional skills
| Question | Answer |
|---|---|
| ___ _____ ______ are skills that involve arm, hand, and/or finger movement to a target | manual aiming skills |
| the phenomenon of emphasis on accuracy reduces speed and emphasis on speed reduces accuracy | speed-accuracy trade-off |
| _____ _____ predicts the movement time for a situation requiring both speed and accuracy in which a person must move to a target as quickly and accurately as possible; based on the distance to move and the target size. | Fitts' Law |
| log2(2D/W) | index of difficulty |
| The role of vision in speed accuracy skills depends on what? | the phase of the limb movement |
| The hypothesis that small corrections in trajectory or submovements will be used during open-loop control | intermittent feedback hypothesis |
| The hypothesis that impulses to the muscles help achieve accuracy | impulse-timing hypothesis |
| The hypothesis that an initial impulse lead to accurate movement. If feedback detects inaccuracy, submovements will be used. | multiple submovements hypothesis |
| Begins when the performer makes the decision to perform the skill involving a speed-accuracy trade off | movement preparation phase |
| The first open loop movement phase; beginning of limb movement in the direction of the target; relatively fast with no sensory feedback | initial flight phase |
| Begins just before and ends when the target is hit; vision is needed for movement corrections | termination phase |
| The action of reaching for and grasping an object that may be stationary or moving | prehension |
| Three components of prehension | transport, grasp, and object manipulation |
| Used to encourage the use of an impaired arm that is often disused | constraint-induced movement therapy |
| Reach and grasp act | synergistically and interdependently |
| There is a strong ______ ______ between reach and grasp. | temporal coupling |
| Visual feedback during prehension is | based on movement characteristics of the object |
| The capability of the motor control system to enable a person to achieve an action goal in a variety of situations and condition | motor equivalence |
| During handwriting, vision controls | spatial arrangement of words horizontally and accurate handwriting patterns |
| A motor skill that requires the simultaneous use of two arms either separately or together | bimanual coordination |
| Motor skill where the arms are doing the same thing; can be uncoupled | symmetric bimanual coordination |
| Motor skill where the arms are doing something differently | asymmetric bimanual coordination |
| Catching involves intercepting a ________ object. | moving |
| The _______ of an object in the catching action ends the action. | grasp |
| The first two steps of catching are completed by _____% of the object flight time. | 75 |
| A functional network, generating the rhythm and shaping pattern of motor neuron activity | central pattern generators |
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millymarie98
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