Team coordination—members of a group acting together rather than performing specific actions individually—is essential for success in many real-world tasks such as military missions, sports, workplace, or school interactions. However, team coordination is highly variable, which is one reason why its underlying neural processes are largely unknown. Here we used dual electroencephalography (EEG) in dyads to study the neurobehavioral dynamics of team coordination in an ecologically valid task that places intensive demands on joint performance. We present a novel conceptual framework to interpret neurobehavioral variability in terms of degeneracy, a fundamental property of complex biological systems said to enhance flexibility and robustness. We characterize degeneracy conceptually in terms of a manifold representing the geometric locus of the dynamics in the high dimensional state-space of neurobehavioral signals. The geometry and dimensionality of the manifold are determined by task constraints and team coordination requirements which restrict the manifold to trajectories that are conducive to successful task performance. Our results indicate that team coordination is associated with dimensionality reduction of the manifold as evident in increased inter-brain phase coherence of beta and gamma rhythms during critical phases of task performance where subjects exchange information. Team coordination was also found to affect the shape of the manifold manifested as a symmetry breaking of centro-parietal wavelet power patterns across subjects in trials with high team coordination. These results open a conceptual and empirical path to identifying the mechanisms underlying team performance in complex tasks.

中文翻译：

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团队协调的神经行为相关性的简并性和复杂性


团队协调（团队成员共同行动而不是单独执行特定行动）对于军事任务、体育、工作场所或学校互动等许多现实任务的成功至关重要。然而，团队协调是高度可变的，这也是其潜在神经过程很大程度上未知的原因之一。在这里，我们使用双联脑电图 (EEG) 来研究在一项对关节性能提出严格要求的生态有效任务中团队协调的神经行为动力学。我们提出了一个新颖的概念框架来解释简并性的神经行为变异性，这是复杂生物系统的基本属性，据说可以增强灵活性和鲁棒性。我们用表示神经行为信号高维状态空间中动力学几何轨迹的流形来概念性地描述简并性。流形的几何形状和维度由任务约束和团队协调要求决定，这将流形限制在有利于成功执行任务的轨迹。我们的结果表明，团队协调与流形的降维相关，这在受试者交换信息的任务执行关键阶段期间β和γ节律的脑间相位一致性增加中显而易见。团队协调也被发现会影响流形的形状，表现为在具有高度团队协调性的试验中受试者之间的中心顶叶小波功率模式的对称性破缺。这些结果为识别复杂任务中团队绩效的潜在机制开辟了一条概念和实证途径。