ENS 307 Lecture Notes - Lecture 11: Binary Logarithm, Tennis Shots, Anatomical Terms Of Location
23 Mar 2020
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Lecture 11 - principles of speed, accuracy, and coordination. As we move more rapidly, we become more inaccurate in trying to achieve a goal. Occurs in situations in which the goal is to move a limb, or effector, as quick as possible to reach a target with the least amount of error. Fitt"s law: mt = a + b [log2(d/w)] An inverse relationship between the difficulty of a movement and the speed with which it can be performed. When striking a ball, error depends on: Findings: error was smaller in maximal instructions. When movement was faster and more violent, timing accuracy improved. The indicator was closer to the target giving participants more precise estimate. Rapid movements were more consistent; no room for variability. Shorter periods of time are easier to estimate. Newell (1985,1986): coordination involves the constraints that exist among multiple moving effectors such that variables being coordinated obey allegiance to a simple function.
