952-恐惧记忆印迹的亚群解析

这项研究利用高时间分辨率的 f-FLiCRE 术，精确解析了小鼠海马体 CA1 区在恐惧记忆形成过程中的神经元集群。研究人员将学习过程细分为电击前、电击时、僵直行为及非僵直四个阶段，发现只有在受电击和表现出恐惧僵直时活跃的细胞子集，才是构成记忆印迹（engram）的核心，足以驱动记忆的提取。通过光遗传学验证，操纵这些特定的神经元集群可以人为开启或关闭恐惧记忆。相比之下，环境探索阶段和非恐惧状态下的神经元虽在活动，却并不参与记忆印迹的整合。钙成像分析进一步证实，这些不同的细胞群在空间上高度独立，且具有独特的放电动力学特征。该研究揭示了大脑如何从连续的经历中筛选特定信息，并将其转化为持久关联记忆的生物学机制。References:* Pouget C, Morier F, Autore L, et al. Deconstruction of a memory engram reveals ...去小宇宙查看完整单集简介前往小宇宙评论区与主播互动

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952-恐惧记忆印迹的亚群解析

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这项研究利用高时间分辨率的 f-FLiCRE 术，精确解析了小鼠海马体 CA1...

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