在体内成像分析,以探索多模式厌恶感官信息在中央杏仁体的整合
Xinliang Zhou1, Yuta Sakuragi1, Chiaki Katagiri1
1Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo, 060-0812, Japan.
Scientific reports
|December 23, 2025
概括
负面情绪源于各种不愉快的感官输入,由中枢桃体 (CeA) 处理. 研究表明,CeA神经元对厌恶刺激具有高度特异性,其中一些神经元可以整合来自多种感官的信息.
科学领域:
- 神经科学是一个神经科学.
- 感官处理 感官处理
- 情感研究 情感研究
背景情况:
- 负面情绪和回避行为对于生存至关重要,涉及自主和荷尔蒙反应.
- 中枢桃体 (CeA) 是一个关键的大脑区域,集成用于情绪和压力反应的感官信息.
研究的目的:
- 为了调查不同的厌恶感官输入 (疼痛,嗅觉,味觉) 是否汇聚在相同的中枢杏仁体 (CeA) 神经元上.
- 确定CeA神经元是否集成感官信息来产生负面情绪,或者是否涉及不同的途径.
主要方法:
- 使用体内Ca2+成像来监测CeA神经元的活动.
- 应用厌恶性疼痛,嗅觉和味觉刺激来评估神经元反应.
主要成果:
- 在263个已识别的CeA神经元中,有144个 (54.8%) 对至少一个厌恶刺激做出了反应.
- 观察到高度的特异性:70.8%的激活神经元只对一种刺激类型做出反应.
- 较小比例的神经元表现出交叉模式的反应:24.3%对两种刺激作出反应,4.9%对所有三种刺激作出反应.
结论:
- 中枢杏仁体 (CeA) 神经元对不同的厌恶感官刺激具有显著的特异性.
- 来自不同的途径的偏向感官信息的部分集成发生在CeA内.
- 研究结果表明,CeA在通过特定和部分集成的感官输入来处理负面情绪方面发挥着微妙的作用.
相关概念视频
01:15Functional Brain Systems: Limbic System
6.2K
The limbic system, often called the "emotional brain," is a complex set of structures located deep within the brain. The intricate network of the limbic system supports a wide range of psychological functions, from emotional regulation to memory formation and sensory processing. This functional brain region encompasses specific parts of the diencephalon and the cerebrum, integrating the higher mental functions of the cerebral cortex with the primitive emotional responses of the deep brain...
6.2K
01:16Role of Amygdala in Memory
994
The amygdala is a small, almond-shaped structure responsible for processing and storing memories, particularly those linked to emotions like fear and stress. It plays an essential role in the brain's response to emotionally significant events and often enhances memory formation by triggering stress hormone release. The amygdala is vital for encoding and retrieving memories associated with fear or stress, a process that is adaptive by helping organisms avoid dangerous situations.
One of the...
One of the...
994