Inter-brain synchronization during social interaction.
Inter-brain synchronization during social interaction.
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DOI：
10.1371/journal.pone.0012166
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发表时间：
2010-08-17
期刊：
影响因子：
3.7
通讯作者：
Garnero L
中科院分区：
文献类型：
--
作者：
Dumas G;Nadel J;Soussignan R;Martinerie J;Garnero L
在社交互动过程中，两个参与者都是持续活跃的，每个人都在修改自己的行为以响应合作伙伴不断变化的行为。这种持续的相互适应导致了两个成员都参与的间歇同步。模仿者和榜样角色的自由交换是一个良好的例子，说明了相互行为协商产生的互动同步。参与者的大脑活动如何构成这一过程的基础，目前是超扫描记录允许我们探索的一个问题。特别是，在社会交往过程中，两个大脑之间的振荡同步在多大程度上会出现，这在很大程度上仍然是未知的。为了探讨这个问题，18名参与者配对为9个二人组，记录了双视频和双脑电图设置，而他们从事自发模仿的手部运动。我们测量了模特和模仿者之间的话轮转换和话语间同步性。我们发现，通过使用非线性技术，状态的interbrain同步相关的出现在右侧中央顶叶区域之间的α-μ带的interbrain同步网络。这些区域被认为在社会互动中发挥着关键作用。在这里，它们对称地作为个体间脑网络的关键功能枢纽。此外，神经同步变得不对称，在较高的频段可能反映了自上而下的调制模型和模仿者的角色在正在进行的互动。
During social interaction, both participants are continuously active, each modifying their own actions in response to the continuously changing actions of the partner. This continuous mutual adaptation results in interactional synchrony to which both members contribute. Freely exchanging the role of imitator and model is a well-framed example of interactional synchrony resulting from a mutual behavioral negotiation. How the participants' brain activity underlies this process is currently a question that hyperscanning recordings allow us to explore. In particular, it remains largely unknown to what extent oscillatory synchronization could emerge between two brains during social interaction. To explore this issue, 18 participants paired as 9 dyads were recorded with dual-video and dual-EEG setups while they were engaged in spontaneous imitation of hand movements. We measured interactional synchrony and the turn-taking between model and imitator. We discovered by the use of nonlinear techniques that states of interactional synchrony correlate with the emergence of an interbrain synchronizing network in the alpha-mu band between the right centroparietal regions. These regions have been suggested to play a pivotal role in social interaction. Here, they acted symmetrically as key functional hubs in the interindividual brainweb. Additionally, neural synchronization became asymmetrical in the higher frequency bands possibly reflecting a top-down modulation of the roles of model and imitator in the ongoing interaction.
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