Convergent processing of the world may be a factor that contributes to social connectedness. We use neuroimaging and network analysis to investigate the association between the socialnetwork position (as measured by in-degree centrality) of first-year university students and their neural similarity while watching naturalistic audio-visual stimuli (specifically, videos). There were 119 students in the social-network study; 63 of them participated in the neuroimaging study. We show that more central individuals had similar neural responses to their peers and to each other in brain regions that are associated with high-level interpretations and social cognition (e.g., in the default mode network), whereas less-central individuals exhibited more variable responses. Self-reported enjoyment of and interest in stimuli followed a similar pattern, but accounting for these data did not change our main results. These findings show that neural processing of external stimuli is similar in highly-central individuals but is idiosyncratic in less-central individuals.

对外部世界产生相近的反应，可能是促成社会连通性的一个因素。这项研究使用神经成像和网络分析来研究大学一年级学生在观看中性视听刺激（特别是视频）时，其在社会网络中所处的位置（以入度中心性衡量）和他们神经活动相似性之间的关系。有119名学生参与了社会网络研究，其中63人参与了神经影像学研究。研究发现，位于网络中心位置的个体与同伴的大脑区域具有相似的神经反应，这些区域与高级别的解释和社会认知相关（例如，位于默认模式网络），而位于边缘的个体则表现出更多的个性化反应。自我报告的喜爱和兴趣的刺激遵循类似模式，但考虑了喜爱程度和兴趣后，没有改变社交网络中心者大脑活动相似这一核心结论。这些发现表明，对外部刺激的神经处理在社交网络中度数高的个体中是相似的，但在度数低的个体中是特殊的。

研究领域：社交网络，神经活动，中心度