Tomassini Alice, Laroche Julien, Emanuele Marco, Nazzaro Giovanni, Petrone Nicola, Fadiga Luciano, D'Ausilio Alessandro
Center for Translational Neurophysiology of Speech and Communication (CTNSC), Italian Institute of Technology (IIT), Via Fossato di Mortara, 17-19, 44121 Ferrara, Italy.
Department of Neuroscience and Rehabilitation, University of Ferrara, Via Fossato di Mortara, 17-19, 44121 Ferrara, Italy.
iScience. 2022 Mar 17;25(4):104096. doi: 10.1016/j.isci.2022.104096. eCollection 2022 Apr 15.
Most animal species group together and coordinate their behavior in quite sophisticated manners for mating, hunting, or defense purposes. In humans, coordination at a level (the pacing of movements) is evident both in daily life (e.g., walking) and skilled (e.g., music and dance) behaviors. By examining the fine structure of movement, we here show that interpersonal coordination is established also at a - movement - level. Natural movements appear as marked by recurrent (2-3 Hz) speed breaks, i.e., submovements, that are traditionally considered the result of intermittency in (visuo)motor feedback-based control. In a series of interpersonal coordination tasks, we show that submovements produced by interacting partners are not independent but alternate tightly over time, reflecting online mutual adaptation. These findings unveil a potential core mechanism for behavioral coordination that is based on between-persons synchronization of the intrinsic dynamics of action-perception cycles.
大多数动物物种会聚集在一起，并以相当复杂的方式协调它们的行为，以达到交配、狩猎或防御的目的。在人类中，一定水平（运动节奏）的协调在日常生活（如行走）和技能行为（如音乐和舞蹈）中都很明显。通过研究运动的精细结构，我们在此表明人际协调也在一个——运动——水平上建立。自然运动表现为以反复出现的（2 - 3赫兹）速度中断为特征，即子运动，传统上认为这是基于（视觉）运动反馈控制间歇性的结果。在一系列人际协调任务中，我们表明互动伙伴产生的子运动并非相互独立，而是随着时间紧密交替，反映了在线相互适应。这些发现揭示了一种基于行动 - 感知循环内在动力学的人际同步的行为协调潜在核心机制。
