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核 accumbens 核心单细胞合奏双向地响应经历与观察到的厌恶事件
Oyku Dinckol1,2, Noah Harris Wenger1,2, Jennifer E Zachry3
1Department of Cell Biology and Neuroscience, Rowan-Virtua School of Translational Biomedical Engineering and Sciences, Rowan University, Stratford, NJ, 08084, USA.
Scientific reports
|December 19, 2023
概括
哺乳动物通过直接经验或观察他人来学习恐惧. 中核突 (NAc) 显示了不同的神经元活动模式,用于经历与观察到的恐惧,女性表现出更强烈的反应.
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
- 哺乳动物的生存机制
背景情况:
- 恐惧学习对于哺乳动物的生存至关重要,通过直接经验或厌恶刺激的社会传播来获得.
- 社交信息传输的神经网络与处理厌恶和奖励刺激的神经网络重叠.
- 内核 (NAc) 参与处理厌恶和奖励的刺激.
研究的目的:
- 在恐惧学习过程中,研究核结核 (NAc) 中单细胞活动模式.
- 为了区分神经元对经历和社会观察到的厌恶刺激的反应.
- 探索NAc核心神经元对厌恶刺激反应的性别差异.
主要方法:
- 在NAc核心神经元中过渡体的体内光学成像,使用微型视野镜.
- 在不同行为状态中对单个神经元进行纵向跟踪.
- 对单细胞组合活动的分析,以应对经历和观察到的厌恶刺激.
主要成果:
- 在NAc核心单细胞组合中,对经历和观察到的厌恶刺激都有很大程度上积极的反应,有些是负面的.
- 在NAc组合中,经历过的厌恶刺激的响应大小大于观察到的事件.
- 女性对经历过的厌恶刺激表现出更强的累积反应,这表明性别差异.
- 一个NAc核心神经元的子群体显示了双向反应,区分经验和观察到的厌恶.
结论:
- 该NAc在区分直接体感体验的厌恶和在单细胞水平上对厌恶的社会观察之间发挥着至关重要的作用.
- 这些发现对理解自闭症谱系障碍等精神病理方面的社会信息处理缺陷有意义.
- 该研究强调了NAc参与复杂的恐惧学习和社会认知.
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