人类逃生回路的内剖析
Haoming Zhang1, Jiayu Cheng1, Keyu Hu1
1Centre for Cognitive and Brain Sciences and Department of Psychology, University of Macau, Macau, China.
Nature communications
|July 2, 2025
概括
人类逃生涉及不同的反应和认知恐惧电路. 认知电路处理威胁,而反应电路在快速逃脱时被激活,它们之间的通信确保了成功的逃避.
科学领域:
- 神经科学是一个神经科学.
- 行为生物学 行为生物学
- 人类恐惧反应反应
背景情况:
- 猎物动物对捕食者攻击表现出不同的反应,从简单的运动反应到复杂的认知策略.
- 现有的研究指出,在逃跑过程中涉及两个主要的神经回路:反应性和认知性恐惧回路.
- 这些电路在逃逸过程的不同阶段的确切作用仍然不完全理解.
研究的目的:
- 阐明反应性和认知性恐惧回路在人类逃生行为中的不同作用.
- 在受控实验环境中识别威胁处理和主动逃避的神经基础.
- 在逃跑的不同阶段,研究恐惧电路之间的通信动态.
主要方法:
- 立体电脑录像 (SEEG) 记录来自人类患者.
- 参与者从事修改的飞行启动距离任务,模拟掠食者与猎物的相互作用.
- 分析的重点是神经活动和信息流在识别的恐惧电路在威胁的感知和逃避.
主要成果:
- 认知恐惧区域,包括腹中前额叶皮质 (vmPFC) 和海马体,在信息处理过程中编码了威胁水平.
- 反应性恐惧电路,包括中皮质和杏仁体,在活跃逃生阶段显示出突出的激活,特别是在快速攻击下.
- 在快速攻击期间,观察到从杏仁体到vmPFC的显著的甲基频段信息流,表明恐惧回路之间的动态相互作用.
结论:
- 这项研究成功地区分了认知和反应性恐惧电路在人类逃生中的作用.
- 认知电路对于威胁评估至关重要,而反应电路对于立即逃避至关重要,特别是在高威胁条件下.
- 反应性和认知性恐惧回路之间的动态通信,通过像杏仁体-vmPFC θ 波段流动等途径进行调解,对于成功逃脱至关重要.
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