Department of Child and Adolescent Psychiatry, Child Neuropsychology Section, Psychosomatics and Psychotherapy, Medical Faculty, RWTH Aachen University, Germany; JARA-Brain Institute II, Molecular Neuroscience and Neuroimaging, RWTH Aachen & Research Centre Juelich, Germany; Psychology, School of Social Sciences, Nanyang Technological University, Singapore S639818, Republic of Singapore.
Division of Psychology, University of East London, London E16 2RD, United Kingdom.
Neuroimage. 2022 May 1;251:118982. doi: 10.1016/j.neuroimage.2022.118982. Epub 2022 Feb 8.
Hyperscanning studies have begun to unravel the brain mechanisms underlying social interaction, indicating a functional role for interpersonal neural synchronization (INS), yet the mechanisms that drive INS are poorly understood. The current study, thus, addresses whether INS is functionally-distinct from synchrony in other systems - specifically the autonomic nervous system and motor behavior. To test this, we used concurrent functional near-infrared spectroscopy - electrocardiography recordings, while N = 34 mother-child and stranger-child dyads engaged in cooperative and competitive tasks. Only in the neural domain was a higher synchrony for mother-child compared to stranger-child dyads observed. Further, autonomic nervous system and neural synchrony were positively related during competition but not during cooperation. These results suggest that synchrony in different behavioral and biological systems may reflect distinct processes. Furthermore, they show that increased mother-child INS is unlikely to be explained solely by shared arousal and behavioral similarities, supporting recent theories that postulate that INS is higher in close relationships.
超扫描研究已经开始揭示社交互动的大脑机制，表明人际神经同步（INS）具有功能作用，但驱动 INS 的机制还知之甚少。因此，本研究旨在探讨 INS 是否与其他系统（特别是自主神经系统和运动行为）的同步具有功能上的区别。为了检验这一点，我们使用了同时进行的功能近红外光谱-心电图记录，当 N=34 个母婴和陌生儿童对子进行合作和竞争任务时。只有在神经域中，母婴对子比陌生儿童对子观察到更高的同步性。此外，在竞争期间，但不是在合作期间，自主神经系统和神经同步性呈正相关。这些结果表明，不同行为和生物系统中的同步可能反映了不同的过程。此外，它们表明，母婴 INS 的增加不太可能仅仅通过共享唤醒和行为相似性来解释，这支持了最近的理论，即 INS 在亲密关系中更高。
