KP161 Lecture Notes - Lecture 3: Attractor, Mental Chronometry, Motor Skill
12 Feb 2018
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Document Summary
Changes in attentional focus occur according to di erent arousal levels (ie. attention is broad if arousal is low) Attentional focus narrows towards task-relevant cues as arousal approaches optimal levels. Range of arousal levels causing optimal performance. Narrowing of attention with increased arousal levels. Process of organizing the systems available degrees of freedom into an e cient movement pattern to achieve a speci c goal. Manipulating variables within a movement to meet demands of a given situation. How we coordinate and control the available degrees of freedom to produce a movement is the degrees of freedom problem. Nervous system tries to nd the most e cient way to do everything. How skilled movement is coordinated and controlled: motor program theories. Existence of a command centre in the brain. Movement plan retrieved from memory: dynamic interaction theories. Skilled movement emerges from a dynamic interaction of variables in the body, environment and the skill.
