Salesse R, Temprado J J
Faculté des Sciences du Sport, Université de la Méditerranée, UMR 6152 "Mouvement & Perception" CNRS, 163 Avenue de Luminy, case postale 910, Marseille 13288, France.
Acta Psychol (Amst). 2005 Jun;119(2):143-57. doi: 10.1016/j.actpsy.2004.12.002. Epub 2005 Jan 26.
Understanding how multiple constraints contribute to the emergence of coordinated behavior has been the topic of considerable debate in cognitive sciences. The present experiment addressed the issue of the effects of visual motion structures (iso- and non-isodirectionality) on the stability of hand-foot coordination patterns. Visuo-motor transformations--decorrelating the perceived movement direction from the actually generated direction--were applied to both in-phase and anti-phase patterns. Two mutually exclusive hypotheses--the "visual grouping hypothesis" and the "incongruency hypothesis"--were tested. The results indicated that both conditions of transformed visual feedback destabilized the actual performed coordination patterns. Thus, despite the existence of common underlying principles that govern both the perceived motion pattern and the generation of hand-foot coordination patterns, it appeared that perceptual grouping principles were not exploited to monitor the production of coordination. These results strongly suggest that the congruency between the performed pattern and the perceived visual feedback is the primary factor determining the (in)stability of hand-foot coordination patterns.
理解多种约束如何促成协调行为的出现，一直是认知科学中大量辩论的主题。本实验探讨了视觉运动结构（同向和非同向性）对手足协调模式稳定性的影响问题。视觉运动转换——将感知到的运动方向与实际产生的方向解相关——应用于同相和反相模式。对两个相互排斥的假设——“视觉分组假设”和“不一致假设”——进行了测试。结果表明，转换后的视觉反馈的两种情况都会破坏实际执行的协调模式的稳定性。因此，尽管存在支配感知运动模式和手足协调模式产生的共同基本原则，但似乎并未利用感知分组原则来监测协调的产生。这些结果强烈表明，执行模式与感知到的视觉反馈之间的一致性是决定手足协调模式（不）稳定性的主要因素。
