认同预测错误的中脑信号取决于轨道前皮层网络
Qingfang Liu1, Yao Zhao1, Sumedha Attanti2
1National Institute on Drug Abuse Intramural Research Program, Baltimore, MD, 21224, USA.
Nature communications
|February 24, 2024
概括
这项研究表明,横向轨道前皮层 (OFC) 对于学习奖励认同至关重要. 扰乱OFC损害了奖励学习和改变中脑对意想不到的结果的反应,这表明OFC预期会传递预测错误信号.
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
- 决策神经科学 决策神经科学
背景情况:
- 结果导向的行为依赖于预期未来的奖励.
- 多巴胺基中脑信号奖励身份预测错误.
- 侧面轨道前皮层 (OFC) 参与代表奖励认同期望.
研究的目的:
- 调查横向OFC结果预期是否有助于中脑身份预测错误 (iPE).
- 通过网络向的跨膜磁刺激 (TMS) 和功能磁共振成像 (fMRI) 测试假设.
主要方法:
- 在跨增强器逆转学习任务中,网络向的TMS应用于横向OFC.
- 在学习任务期间,fMRI记录了大脑活动.
- 分析的重点是中脑中OFC和iPE反应的全球连接.
主要成果:
- 针对横向OFC的TMS减少了其全球连接.
- 横向OFC中断影响了奖励认同学习.
- 在OFC中,TMS调节了预期奖励身份的神经表示,并改变了中脑iPE反应.
结论:
- 多巴胺基中脑中的身份预测错误是使用从横向OFC的结果预期来计算的.
- 侧面OFC在奖励身份学习和期望更新中发挥着关键作用.
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