Fernandez Laure, Bootsma Reinoud J
UMR 6233, Institut des Sciences du Mouvement E.J. Marey, 163, avenue de Luminy, CNRS and University of the Mediterranean, 13288 Marseille Cedex 9, France.
Acta Psychol (Amst). 2008 Oct;129(2):217-27. doi: 10.1016/j.actpsy.2008.06.001. Epub 2008 Jul 15.
The role of information in the processes underlying kinematic trajectory-formation was examined by manipulating the relation between effector space (movement of a hand-held stylus on a graphics tablet) and task space (movement of a cursor on a screen where targets were presented) in a precision aiming task with five different levels of task difficulty. Movement patterns were found to evolve as a function of the flow of information in task space, with participants (N=13) producing more rapid and more fluent movements when the mapping between spaces included the softening-spring characteristics typical of behavioural patterns at higher levels of task difficulty. We conclude that the kinematic changes (movement time and pattern) observed when task difficulty increases result from informational influences. Information affects behavioural dynamics at the level of the parameters without affecting the underlying dynamical structure.
在一项具有五种不同任务难度水平的精确瞄准任务中，通过操纵效应器空间（图形输入板上手握触控笔的移动）和任务空间（呈现目标的屏幕上光标的移动）之间的关系，研究了信息在运动轨迹形成潜在过程中的作用。发现运动模式随着任务空间中信息流的变化而演变，当空间之间的映射包括更高任务难度水平下典型行为模式的软弹簧特征时，参与者（N = 13）会产生更快、更流畅的运动。我们得出结论，任务难度增加时观察到的运动学变化（运动时间和模式）是由信息影响导致的。信息在参数层面影响行为动力学，而不影响潜在的动力学结构。
