Collins D R, Sternad D, Turvey M T
Center for the Ecological Study of Perception and Action, University of Connecticut, Storrs, CT 06268, USA.
J Mot Behav. 1996 Dec;28(4):299-303. doi: 10.1080/00222895.1996.10544599.
Synchronous coordination between two body segments departs from phase locking at 0 or pi radians when the segments are asymmetrical. In models of coordination dynamics, this detuning is typically quantified by Deltaomega = (omega1 - omega2), where omega1 and omega2 are the uncoupled frequencies of the two segments. An experiment is reported in which the magnitude of Deltaomega not equal 0 was satisfied by different ratios Omega of omega1 and omega2. The degree of detuning was found to vary systematically with Omega and Deltaomega. This result corroborates previous research using the complementary manipulation of varying Deltaomega for a fixed Omega. A challenge for future dynamical modeling is identifying precisely how the detuning quantity incorporates both the absolute and relative differences in the. uncoupled segmental frequencies.
当身体的两个节段不对称时，它们之间的同步协调会偏离0或π弧度的锁相状态。在协调动力学模型中，这种失谐通常用Δω = (ω1 - ω2)来量化，其中ω1和ω2是两个节段的未耦合频率。本文报道了一项实验，其中通过ω1和ω2的不同比值Ω来满足Δω ≠ 0的情况。结果发现失谐程度会随Ω和Δω系统地变化。这一结果证实了之前通过对固定Ω改变Δω进行补充操作的研究。未来动力学建模面临的一个挑战是精确确定失谐量如何同时包含未耦合节段频率的绝对差异和相对差异。
