Amazeen P G, Amazeen E L, Turvey M T
Faculty of Human Movement Sciences, Vrije Universiteit, Amsterdam Center for the Ecological Study of Perception and Action University of Connecticut, Storrs.
J Mot Behav. 1998 Sep;30(3):199-216. doi: 10.1080/00222899809601337.
Interlimb rhythmic coordination is reflectionally symmetric when the left and right limb segments are identical in uncoupled frequencies and spatial orientation. In the present studies (4 experiments, with a total of 31 participants), when reflectional symmetry was broken through differences in timing (frequency), the resulting stable states were related by reflection and were identical for paired identically oriented limb segments behaving either as inverted or as ordinary pendulums. When reflectional symmetry was broken both temporally and spatially (coordinating inverted and ordinary pendular motions), the resulting stable states were different from those produced by identically oriented pendulums but nevertheless were related by reflection. In the Discussion, the authors focus on (a) symmetry breaking as leading to one of a number of symmetrically related states and (b) extending coordination dynamics with reflectional symmetry so that temporal and spatial asymmetries can both be accommodated.
当左右肢体节段在非耦合频率和空间取向上相同时，肢体间的节律性协调是反射对称的。在本研究（4个实验，共31名参与者）中，当反射对称通过时间（频率）差异被打破时，所产生的稳定状态通过反射相关联，并且对于表现为倒立或普通摆的成对的相同取向肢体节段来说是相同的。当反射对称在时间和空间上都被打破时（协调倒立和普通摆动运动），所产生的稳定状态与由相同取向摆产生的稳定状态不同，但仍然通过反射相关联。在讨论中，作者关注于（a）对称性破缺导致众多对称相关状态之一，以及（b）扩展具有反射对称的协调动力学，以便能够同时容纳时间和空间不对称性。
