School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China.
Department of Computer Science, Vanderbilt University, Nashville, Tennessee, USA.
Hum Brain Mapp. 2024 Apr;45(5):e26672. doi: 10.1002/hbm.26672.
Mother-child interaction is highly dynamic and reciprocal. Switching roles in these back-and-forth interactions serves as a crucial feature of reciprocal behaviors while the underlying neural entrainment is still not well-studied. Here, we designed a role-controlled cooperative task with dual EEG recording to explore how differently two brains interact when mothers and children hold different roles. When children were actors and mothers were observers, mother-child interbrain synchrony emerged primarily within the theta oscillations and the frontal lobe, which highly correlated with children's attachment to their mothers (self-reported by mothers). When their roles were reversed, this synchrony was shifted to the alpha oscillations and the central area and associated with mothers' perception of their relationship with their children. The results suggested an observer-actor neural alignment within the actor's oscillations, which was related to the actor-toward-observer emotional bonding. Our findings contribute to the understanding of how interbrain synchrony is established and dynamically changed during mother-child reciprocal interaction.
母婴互动是高度动态和相互的。在这些来回互动中转换角色是互惠行为的一个关键特征，而潜在的神经同步仍未得到很好的研究。在这里，我们设计了一个具有双 EEG 记录的角色控制合作任务，以探索当母亲和孩子扮演不同角色时，两个大脑是如何不同地相互作用的。当孩子是演员而母亲是观察者时，母婴间脑同步主要出现在θ振荡和额叶中，与孩子对母亲的依恋高度相关（由母亲自我报告）。当他们的角色互换时，这种同步转移到了α振荡和中央区域，并与母亲对其与孩子关系的感知相关。结果表明，在演员的振荡中存在观察者-演员的神经对齐，这与演员对观察者的情感联系有关。我们的发现有助于理解在母婴互惠互动中，脑间同步是如何建立和动态变化的。
