Torre Kjerstin
Sensorimotor Neuroscience Laboratory, McMaster University, Hamilton, Ontario, Canada.
J Mot Behav. 2010 Mar-Apr;42(2):99-105. doi: 10.1080/00222890903507891.
The coordination dynamics framework has presumed that fluctuations in relative phase series produced in bimanual coordination are random. However, results from recent studies have shown that relative phase series contain 1/f(beta) noise (persistent long-range correlations) instead. Using an incremental protocol in line with the paradigmatic bimanual coordination framework, the author shows that the movement frequencies at which individuals spontaneously switch from anti-phase to in-phase coordination are significantly correlated with the intensity of long-range correlations but not with the amplitude of baseline fluctuations in relative phase. This finding illustrates the tangible relationship between present theoretical perspectives and accumulating evidence for 1/f(beta) noise. The author underscores the heuristic potential of systematic efforts to bridge the gap between present theories and the pervasive findings of 1/f(beta) noise.
协调动力学框架假定，在双手协调中产生的相对相位序列波动是随机的。然而，最近的研究结果表明，相对相位序列包含的是1/f（β）噪声（持续的长程相关性）。作者采用了一种与典型双手协调框架一致的递增协议，结果表明，个体从反相协调自发切换到同相协调的运动频率，与长程相关性的强度显著相关，而与相对相位的基线波动幅度无关。这一发现说明了当前理论观点与关于1/f（β）噪声的越来越多的证据之间的切实关系。作者强调了系统性努力在弥合当前理论与普遍存在的1/f（β）噪声研究结果之间差距方面的启发潜力。
