Richardson Michael J, Lopresti-Goodman Stacy, Mancini Marisa, Kay Bruce, Schmidt R C
Colby College, Waterville, ME 04901, United States.
Neurosci Lett. 2008 Jun 27;438(3):340-5. doi: 10.1016/j.neulet.2008.04.083. Epub 2008 Apr 26.
Previous research has demonstrated that intra- and interpersonal rhythmic interlimb coordination are both constrained by the self-organizing entrainment process of coupled oscillators. Despite intra- and interpersonal coordination exhibiting the same stable macroscopic movement patterns the variability of the coordination is typically found to be much greater for inter- compared to intrapersonal coordination. Researchers have assumed that this is due to the interpersonal visual-motor coupling producing a weaker attractor dynamic than the intrapersonal neuromuscular coupling. To determine whether this assumption is true, two experiments were conducted in which pairs of participants coordinated hand-held pendulums swung about the wrist, either intra- and interpersonally. Using the cross-recurrence statistics of percent recurrence and maxline to independently index the level of noise and the attractor strength of the coordination, respectively, the results confirmed that the attractor strength was significantly weaker for inter- compared to intrapersonal coordination and that a similar magnitude of noise underlies both.
先前的研究表明，肢体内部和人际间的节律性肢体间协调均受耦合振荡器的自组织同步过程的限制。尽管肢体内部和人际间的协调表现出相同的稳定宏观运动模式，但通常发现人际间协调的变异性比肢体内部协调的变异性大得多。研究人员认为，这是由于人际间视觉-运动耦合产生的吸引子动态比肢体内部神经肌肉耦合产生的吸引子动态弱。为了确定这一假设是否正确，进行了两项实验，实验中参与者两两一组，分别在肢体内部和人际间协调绕手腕摆动的手持摆锤。使用重现百分比和最大线的交叉重现统计量分别独立地衡量噪声水平和协调的吸引子强度，结果证实，人际间协调的吸引子强度明显弱于肢体内部协调，且两者的噪声幅度相似。
