Institute of Developmental Psychology, Faculty of Psychology, Beijing Normal University, Beijing 100875, China.
Department of Psychological Science, University of California, Irvine, CA 92697, USA.
Cereb Cortex. 2022 Jul 21;32(15):3254-3268. doi: 10.1093/cercor/bhab413.
Previous studies on dual-brain social interaction have shown different patterns of interpersonal neural synchronization (INS) between conflictual and supportive interactions, but the role of emotion in the dual-brain mechanisms of such interactions is not well understood. Furthermore, little is known about how the dual-brain mechanisms are affected by relationship type (e.g., romantic relationship vs. friendship) and interaction mode (e.g., verbal vs. nonverbal). To elaborate on these issues, this study used functional near-infrared spectroscopy to collect hemodynamic signals from romantic couples and cross-sex friends while they were discussing conflictual, neutral, or supportive topics. For the couples but not the friends, INS between the sensorimotor cortex of both participants was greater when discussing the conflictual topic than when discussing the supportive topic. INS was positively correlated with the arousal level but not the valence level of communication contents. INS was also positively correlated with interpersonal physiological synchronization based on galvanic skin response, a physiological measure of arousal. Furthermore, the differences in INS between the conflictual and supportive topics were closely associated with verbal rather than nonverbal behaviors. Together, these findings suggest that it is the arousal level induced by verbal interactions during interpersonal conflicts that increases romantic couples' INS.
先前有关双脑社会互动的研究表明，在冲突和支持性互动之间存在人际神经同步（INS）的不同模式，但人们对情绪在这种互动的双脑机制中的作用了解甚少。此外，人们对关系类型（例如，浪漫关系与友谊）和互动模式（例如，言语与非言语）如何影响双脑机制知之甚少。为了详细说明这些问题，本研究使用功能近红外光谱技术，在浪漫伴侣和跨性别朋友讨论冲突、中性或支持性话题时，从他们那里收集血液动力学信号。对于夫妻，而非朋友，当讨论冲突话题时，双方感觉运动皮层之间的 INS 比讨论支持性话题时更大。INS 与沟通内容的唤醒水平呈正相关，而与情绪水平无关。INS 也与基于皮肤电反应的人际生理同步呈正相关，皮肤电反应是一种衡量唤醒程度的生理指标。此外，INS 在冲突和支持性话题之间的差异与言语行为而非非言语行为密切相关。综上所述，这些发现表明，正是言语互动在人际冲突中引起的唤醒水平增加了浪漫伴侣的 INS。
