人类大脑在自然主义体验的事件边界上重新激活特定背景的过去信息
Avital Hahamy1, Haim Dubossarsky2,3, Timothy E J Behrens4,5
1Wellcome Trust Centre for Neuroimaging, UCL Queen Square Institute of Neurology, University College London, London, UK. a.hahamy@ucl.ac.uk.
Nature neuroscience
|May 29, 2023
概括
人类通过在大脑中重新激活过去的事件,将离散的经历拼接在一起,形成一个连贯的叙事. 这些神经反应发生在事件边界,有助于理解正在进行的经验.
科学领域:
- 认知神经科学 认知神经科学
- 记忆的神经科学 记忆的神经科学
- 人类经验 人类经验
背景情况:
- 人类的经验是连续感知,但作为离散事件处理.
- 将这些离散事件整合到一个连贯的叙事中,对于理解至关重要.
- 以前的理论建议在动物中进行离线神经反应,以建立空间模型.
研究的目的:
- 为了调查人类是否在自然叙事理解过程中重新激活了过去事件的神经表征.
- 为了识别参与这个重新激活过程的大脑区域.
- 为了确定这些重新激活的时间和选择性.
主要方法:
- 来自两个独立数据集的fMRI数据分析.
- 在理解自然语言叙事过程中检查神经活动.
- 识别与过去事件相关的神经反应的模式.
主要成果:
- 过去事件的神经表现在人类海马和默认模式网络中被重新激活.
- 重新激活是有选择的,重点关注与正在进行的叙事相关的事件.
- 这些重新激活发生在叙事事件之间的边界,而不是在长时间的离线期间.
结论:
- 神经的重新激活作为一种绑定暂时遥远信息的机制.
- 这个过程有助于连贯理解正在进行的经验和自然叙述.
- 研究结果表明,在物种之间,经验整合的机制得到了保护.
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