对时事的看法、对工作的态度、对旅行的规划，种种一致不禁让有的网友感叹：好像和朋友“共脑”了！
事实上，这不仅是默契使然，还有生理因素作为基础：一些研究者把这种现象称为“神经同质性（neural homophily）”。也就是说，你跟你朋友的大脑，真的有可能是相似的……
科学证明，我们本就该成为朋友
2018年1月发表在《自然·通讯》上的研究截图To test whether friendship is associated with increased similarity of real-time mental responding, researchers used functional magnetic resonance imaging (fMRI) to scan subjects’ brains during free viewing of naturalistic movies.
42 students participated in this study. During the fMRI study, each subject watched the same collection of video clips. The videos covered a range of topics and genres (e.g., comedy clips, documentaries, and debates).
研究发现，社会联系越密切，彼此关系越要好的学生，大脑对视频的反应就越相似。而他们最相似的大脑区域，通常与个人如何感知、解释和对周围世界做出反应有关。
The current results suggest that neural responses when viewing audiovisual movies are exceptionally similar among friends, and they are exceptionally similar to one another in terms of how they perceive, interpret, and react to the world around them.
These data also demonstrate that it is possible to predict whether or not two individuals are friends based only on the similarity of temporal patterns in their neural responses during free viewing of complex, real-world scenes.
图片来源：视觉中国
2022年7月发表在《大脑皮层》上的研究截图
《再见我们的幼儿园》剧照 图源：豆瓣The research found that similarity of the social brain varied by friendship distance: mutual friends showed greater similarity in social brain networks compared with friends-of-friends and even more remotely connected peers.
《请回答1988》剧照 图源：豆瓣
朋友之间的神奇联系
“Although the results of the current study suggest that friends have exceptionally similar neural responses to naturalistic stimuli, due to this study’s cross-sectional nature, we cannot ascertain, based on these results alone, whether neural response similarity is a cause or consequence of friendship.”
《我的天才女友》剧照 图源：豆瓣当两个人联系紧密时，他们的行为将变得相似。好朋友之间就会有这种情况，例如他们的心跳节奏、体温和荷尔蒙反应。马钦说，观察朋友间的大脑内部，你会在他们的伽马脑电波，也就是大脑中认知功能较强的部分中看到同步性。
She describes how, when two people are tightly bonded, they mirror each other’s behavior. Best friends’ physiology comes into synchrony too - the rhythm of their hearts, body temperature and hormonal responses. Look inside the brain and you’d see synchrony, says Machin, in the gamma waves - the higher cognitive functioning parts of the brain.
synchrony 同步
“It’s as if every sinew in your body is engaged in having a relationship with that person,” says Machin. “That for me sums up how important best friends are. We wouldn’t have evolved this way if those relationships weren’t critical for survival.” “就好像你身体的每一根筋都在与那个人建立关系。对我来说，这足以概括挚友的重要性。如果这些关系不是生存的关键，我们就不会进化成这样。”
编辑：焦洁
实习生：马萱
来源：KnowYourself 卫报
猕猴桃哪家强 陕西眉县找徐香
皮薄肉厚 水润香甜
齿留余香 沁人心脾
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