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皮质otropin释放因子释放从一个独特的亚群的合并性神经元约束动作-结果获取在奖励学习中的获取
Elizabeth A Eckenwiler1, Anna E Ingebretson1, Jeffrey J Stolley1
1Department of Neuroscience, University of Minnesota Twin Cities, Minneapolis, Minnesota; Medical Discovery Team on Addiction, University of Minnesota, Minneapolis, Minnesota.
皮质otropin释放因子 (CRF) 从核 accumbens 神经元释放调节奖励学习. 这种可以限制初始学习,同时在奖励条件发生变化时促进灵活性.
科学领域:
- 神经科学是一个神经科学.
- 分子精神病学分子精神病学
- 行为神经科学 行为神经科学
背景情况:
- 中核 (NAc) 对于奖励学习和动机至关重要.
- 来自NAc的皮性神经传递在奖励学习模型中表现不足.
- 一个稀疏的NAc神经元群体表达皮质otropin释放因子 (CRF).
研究的目的:
- 在奖励学习中全面分析NAc CRF表达神经元的身份和功能.
- 将体信号整合到NAc介导的奖励过程中.
主要方法:
- 多学科的方法,包括现场杂交,通道追踪和ex vivo电生理学.
- 在小鼠体内成像和纤维光度学.
- 从NAc神经元中删除CRF的病毒策略和行为分析 (仪器学习,糖糖偏好).
主要成果:
- 在NAc CRF中,神经元主要是刺状投射神经元 (SPN),投射到腹和腹中脑中.
- 这些神经元表现出成熟和不成熟的SPN发射特性.
- 纳克CRF神经元跟踪奖励结果,限制初始学习,但提高灵活性随着变化的意外情况.
结论:
- 从NAc SPN中释放CRF对于正常的奖励学习至关重要.
- 这种稀少的神经元群体在调节奖励相关行为的获取和灵活性方面起着至关重要的作用.
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