While the public, private and volunteer sectors in Britain are mobilizing to address loneliness, researchers are deepening their understanding of its biological underpinnings. In a paper published earlier this year in the journal Cell, neuroscientists at the Massachusetts Institute of Technology identified a region of the brain they believe generates feelings of loneliness. The region, known as the dorsal raphe nucleus, or DRN, is best known for its link to depression.
就在英国的公共部门、私人机构、义工团体都动员起来对付孤独的时候,研究人员也在更深入了解它的生物学基础。在今年稍早发表于《细胞》(Cell)期刊的一篇报告里,麻省理工学院(Massachusetts Institute of Techonology)的神经科学家认为他们找到了人脑产生孤独感的区域。这个叫做中缝背核(dorsal raphe nucleus, DRN)的部位最为人所知的是它和忧郁症的关联。
Kay M. Tye and her colleagues found that when mice were housed together, dopamine neurons in the DRN were relatively inactive. But after the mice were isolated for a short period, the activity in those neurons surged when those mice were reunited with other mice.
戴琦(Kay M. Tye)与她的同事发现,实验用小鼠住在一起的时候,鼠脑中缝背核里的多巴胺神经元比较不活跃。不过老鼠被隔离一小段时间再放回鼠群里的时候,这些神经元的活动会大幅增加。
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