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特征奖励敏感性和行为动机与在奖励预期期间的默认模式网络和条纹体之间的连接有关
James B Wyngaarden1, Akanksha Nambiar2, Jeffrey Dennison3
1Temple University, Philadelphia, PA, USA.
Cognitive, affective & behavioral neuroscience
|February 20, 2026
概括
奖励灵敏度和动机的个体差异与大脑连接性有关. 更高的奖励灵敏度与更大的预期快乐相结合,可能会降低动机,影响默认模式网络 (DMN) 和腹状条纹体 (VS) 相互作用.
科学领域:
- 神经科学是一个神经科学.
- 认知神经科学 认知神经科学
- 行为神经科学 行为神经科学
背景情况:
- 个人对奖励和动机的反应有很大的不同.
- 腹状条纹体 (VS) 对于奖励预期至关重要.
- 默认模式网络 (DMN) 和VS之间的功能连接可能解释了奖励行为的个体差异.
研究的目的:
- 调查特征奖励敏感性,行为动机和奖励预期期间的DMN-VS连接之间的关系.
- 探索预期快乐如何调节奖励敏感性和动机之间的联系.
- 检查奖励处理中的个体差异的神经相关性.
主要方法:
- 在货币激励期间fMRI 延迟任务与不同的奖励/损失突出.
- 通过反应时间调制评估行为动机.
- 测量自我报告的预期性快乐和奖励灵敏度.
主要成果:
- 奖励敏感性和预期快乐相互作用,预测行为动机.
- 根据高风险试验中的动机水平,特征奖励灵敏度调节了DMN-VS连接.
- 在收益和损失背景之间,连接模式有所不同.
结论:
- DMN-VS相互作用与奖励处理中的个体差异有关.
- 动机背景对于理解奖励相关的神经机制至关重要.
- 特征奖励敏感性,预期性快乐和行为动机与不同的DMN-VS连接模式有关.
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