913-皮层-脑干回路驱动的多模态安慰剂镇痛研究 episode artwork

EPISODE · May 7, 2026 · 15 MIN

913-皮层-脑干回路驱动的多模态安慰剂镇痛研究

from 聊聊Sci

这份研究揭示了安慰剂镇痛背后的神经生物学机制,通过在小鼠身上模拟人类的条件反射范式,确立了大脑皮层与脑干之间的神经通路在疼痛控制中的核心作用。研究发现,由内源性阿片类物质控制的中脑导水管周围灰质(vlPAG)是实现吗啡和安慰剂止痛效果所必需的,但安慰剂效应特别依赖于来自前额叶皮层的指令输入。实验证明,这种通过条件反射诱发的止痛效果不仅能减轻急性痛感,还能抑制因疼痛产生的情绪波动和逃避行为。此外,这种镇痛机制展现出显著的泛化性,意味着前期培养的心理预期能够帮助个体在遭受新损伤后建立更强的抗痛韧性。该成果为利用大脑自身的调控潜力来替代传统阿片类药物治疗提供了重要的科学基础。References:Livrizzi G, Chang-Weinberg J, Johnson D A, et al. Top-down control of the descending pain modulatory system drives multimodal placebo analgesia[J]. Neuron, 2026.前往小宇宙评论区与主播互动

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913-皮层-脑干回路驱动的多模态安慰剂镇痛研究

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