杏仁体和认知控制网络之间的动态功能连接预测了老年青少年的延迟折扣
Attakias T Mertens1, Callum Goldsmith1, Derek J Pavelka1
1Institute for Human Neuroscience, Omaha, Nebraska, USA.
Human brain mapping
|June 30, 2025
概括
青少年的奖励灵敏度增加. 左桃体和认知控制网络之间的动态功能连接预测了老年青少年在涉及更大数量的情况下对即时奖励的偏好.
科学领域:
- 神经科学是一个神经科学.
- 发展心理学 发展心理学
- 认知神经科学 认知神经科学
背景情况:
- 青春期的特点是提高奖励灵敏度.
- 延迟折扣,基于延迟的奖励值,是决策的一个关键方面.
- 了解青少年延迟折扣背后的神经机制至关重要.
研究的目的:
- 研究认知控制网络和杏仁体之间的动态功能连接在延迟折扣行为的预测作用.
- 为了检查这些不同年龄组之间的关系:年轻的青少年,年长的青少年和年轻的成年人.
主要方法:
- 利用滑窗方法计算左/右杏仁体和认知控制网络之间的动态功能连接.
- 分析了来自三个年龄组的448名参与者的数据.
- 在不同的奖励金额条件下使用层次模型来评估延迟折扣的预测能力.
主要成果:
- 左桃体与认知控制网络的动态功能连接显著预测了老年青少年的延迟折扣,以获得更大的奖励金额.
- 这种更强的连接与对立即奖励的偏好相关.
- 对于右桃体,较小的奖励金额,更年轻的青少年或成年人没有发现有意义的预测.
结论:
- 动态功能连接,特别是涉及左桃体,在调节老年青少年的延迟折扣方面发挥着作用.
- 这些发现突出了影响青春期奖励评估的年龄和条件特定的神经机制.
- 未来的研究可以探索针对这种连接性的干预措施,以影响决策.
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