KINE 3020 Lecture Notes - Lecture 2: Motor Skill, Basal Ganglia, Premotor Cortex
27 Nov 2013
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Document Summary
Degrees of freedom problem-coined by nicolai bernstein to solve how the nervous system performed well coordinated movements. Degrees of freedom= the number of choices that a given item or situation has. Degrees of freedom problem: how can a complex system be constrained in a way to limit its movement: ex. Helicopter designer creating a helicopter that makes it easy for the pilot to maneuver. As we become more practiced at a particular skill, our brains automatically solve the degrees of freedom problem. Skilled performers have difficulty teaching beginners the skill. Fitts and posner three stage model: cognitive stage: Performers do not know how to fix their mistakes/ how to improve: associative stage/ refining stage: transition into this stage after unspecified practice and improvement. Performer learns to associate certain cues with movements required to achieve the goal. Can correct mistakes independently: autonomous stage: takes years and lots of time to move to this stage.
