Department of Psychiatry & Behavioral Sciences and Department of Neurology & Neurological Sciences, Wu Tsai Neurosciences Institute, Stanford University, Stanford, CA, USA.
Neuron. 2023 Aug 16;111(16):2469-2487. doi: 10.1016/j.neuron.2023.04.023. Epub 2023 May 10.
The discovery of the default mode network (DMN) has revolutionized our understanding of the workings of the human brain. Here, I review developments that led to the discovery of the DMN, offer a personal reflection, and consider how our ideas of DMN function have evolved over the past two decades. I summarize literature examining the role of the DMN in self-reference, social cognition, episodic and autobiographical memory, language and semantic memory, and mind wandering. I identify unifying themes and propose new perspectives on the DMN's role in human cognition. I argue that the DMN integrates and broadcasts memory, language, and semantic representations to create a coherent "internal narrative" reflecting our individual experiences. This narrative is central to the construction of a sense of self, shapes how we perceive ourselves and interact with others, may have ontogenetic origins in self-directed speech during childhood, and forms a vital component of human consciousness.
默认模式网络（DMN）的发现彻底改变了我们对人类大脑运作方式的理解。在这里，我回顾了导致 DMN 发现的发展过程，提供了个人反思，并考虑了我们对 DMN 功能的看法在过去二十年中是如何演变的。我总结了研究 DMN 在自我参照、社会认知、情景和自传记忆、语言和语义记忆以及思维漫游中的作用的文献。我确定了统一的主题，并对 DMN 在人类认知中的作用提出了新的观点。我认为，DMN 整合和广播记忆、语言和语义表征，以创建一个连贯的“内部叙述”，反映我们的个人经历。这种叙述是自我建构的核心，塑造了我们如何看待自己和与他人互动的方式，可能在儿童时期的自我指导言语中有其发生学起源，并且是人类意识的重要组成部分。
