核 accumbens 多巴胺释放反映了对键的选择性性质
Anne F Pierce1, David S W Protter2, Yurika L Watanabe2
1Department of Psychology & Neuroscience, University of Colorado Boulder, 1945 Colorado Ave, Boulder, CO 80309, USA.
Current biology : CB
|January 13, 2024
概括
大脑中的多巴胺释放驱动社会互动动机. 在草原小鸟中,多巴胺水平在与伴侣互动时比与陌生人互动时更高,加强了对联的纽带.
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
- 社会神经科学是一种社会神经科学.
背景情况:
- 在一夫一妻制物种中,伴侣和不熟悉的个体之间的亲社会行为有显著差异.
- 众所周知,核中的多巴胺能够调解社会奖励和动机.
- 多巴胺在驱动对伴侣和陌生人不同的社会行为中的确切作用仍然不清楚.
研究的目的:
- 调查多巴胺在激励与伴侣的社交互动中的作用,与新型个体相比.
- 为了确定差异性多巴胺释放是否是单性物种选择性社会行为的基础.
- 探索伴侣分离对多巴胺信号传递的影响.
主要方法:
- 在草原鸟中利用受体药理学在伴侣偏好和社会操作者的任务中.
- 采用光生物传感器GRABDA用于多巴胺释放的次秒时间分辨率.
- 测量了与伴侣和新型同类动物的社交互动期间,在核 accumbens 中释放的多巴胺.
主要成果:
- 多巴胺对社会互动的食欲驱动至关重要,而不是基本的消费行为.
- 寻找伴侣,预期和互动,与与新型小鸟的互动相比,引起了更多的核多巴胺释放.
- 长时间的伴侣分离导致伴侣相关的多巴胺释放量减少.
结论:
- 多巴胺信号是社会互动的食欲方面不可或缺的组成部分.
- 作为对伴侣和新人反应的多巴胺释放差异可能会加强对债券.
- 这种机制涉及多巴胺,使选择性社会行为成为维持社会纽带的关键.
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