中文导读 ScienceDaily于2026年10月15日报道，贝勒医学院（Baylor College of Medicine）一项发表于《Nature》的研究显示：在癫痫手术的全身麻醉期间，海马体中的神经元仍能区分意外音调，并对故事语言中的词类与后续词语做出可解码的反应。本文说明主要发现、方法边界，以及它对意识与未来言语辅助技术的含义。
正文 Many people assume that general anesthesia switches the brain off . If you cannot hear or speak , the thinking must have stopped . A Baylor College of Medicine study , covered by ScienceDaily on October 15, 2026, challenges that idea . Even when patients were fully unconscious , their brains still analyzed language and predicted what might come next in a story .
本段译文 许多人以为全身麻醉等于把大脑关掉：既然听不见、说不出，思考也就停了。贝勒医学院一项研究——ScienceDaily于2026年10月15日报道——挑战了这一看法。即便患者已完全失去意识，大脑仍在分析语言，并预测故事接下来可能出现什么。
The research was published in Nature . During epilepsy surgery , the team recorded activity from hundreds of individual neurons in the hippocampus , a deep region that helps organize information and form new memories . They used Neuropixels probes , tiny devices that can listen to many nerve cells at once . Because patients were already under anesthesia for the operation , the scientists could study this structure without asking them to report what they heard or felt .
本段译文 该研究发表于《Nature》。在癫痫手术期间，团队记录了海马体中数百个单个神经元的活动；海马体是帮助整理信息并形成新记忆的深层脑区。他们使用 Neuropixels 探针——能同时监听许多神经细胞的微型设备。由于患者本已因手术处于麻醉状态，科学家无需让他们报告听到或感受到什么，就能研究这一结构。
First , the researchers played repeating tones and sometimes inserted an unexpected sound . Hippocampal neurons still responded differently to the odd tones . Over about ten minutes , that discrimination improved . The change suggested a form of neural plasticity : some basic learning processes may continue even without conscious awareness . In other words , the unconscious brain was not simply silent ; it was adjusting to patterns in the sounds around it .
本段译文 首先，研究者播放重复音调，偶尔插入意外声音。海马体神经元仍对异常音调做出不同反应。大约十分钟内，这种区分能力有所增强。这一变化提示存在某种神经可塑性：即便没有意识，一些基本学习过程仍可能继续。换言之，无意识的大脑并非单纯沉默，它仍在适应周围声音中的模式。
Next , the team played short stories while recording the same cells . Neural patterns carried information about word categories such as nouns verbs , and adjectives . More strikingly , the activity also contained signals that could help predict upcoming words . Scientists call this predictive coding Awake listeners use it all the time when they guess how a sentence will continue . Finding it under anesthesia suggests that at least part of language processing does not require awareness .
本段译文 接着，团队在记录同一批细胞的同时播放短篇故事。神经活动模式携带了关于词类的信息，例如名词、动词和形容词。更引人注目的是，这些活动还包含有助于预测后续词语的信号。科学家称之为预测编码。清醒的听者在猜测句子如何继续时，一直在使用这种能力。在麻醉下也能发现它，说明至少部分语言处理并不需要意识。
The authors stress clear limits . The patients did not consciously understand the stories . The results come from one type of anesthesia and mainly from the hippocampus , so sleep , coma , and other brain regions may behave differently . Still , the work may inform future speech prosthetics for people who lose the ability to talk after stroke or injury . Dr . Sameer Sheth and colleagues argue that such signals could one day support communication tools when speech areas are damaged . The findings also raise a deeper question : consciousness may depend less on single regions staying active , and more on how large networks share information across the brain . The unconscious mind , it seems , can still keep listening .
本段译文 作者强调了明确的局限。患者并没有有意识地听懂那些故事。结果来自某一种麻醉方式，且主要来自海马体，因此睡眠、昏迷以及其他脑区的表现可能不同。尽管如此，这项工作或可为中风或受伤后失去说话能力的人，提供未来言语假体方面的启发。Sameer Sheth 医生及其同事认为，这类信号将来或许能在言语相关脑区受损时支撑沟通工具。发现也提出一个更深的问题：意识也许较少取决于单个脑区是否保持活跃，而更多取决于大型网络如何在全脑共享信息。无意识的心灵，似乎仍能继续倾听。
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