围皮质是人类近似贝叶斯推理能力的神经基质的候选者
Nicholas M Singletary1,2,3,4, Jacqueline Gottlieb5,6,7, Guillermo Horga8,9
1Doctoral Program in Neurobiology and Behavior, Columbia University, New York, NY, USA. ns3068@cumc.columbia.edu.
Communications biology
|February 10, 2024
概括
这项研究揭示了大脑如何将先前的信念与新的证据相结合,以做出决定. 左侧尾皮层的激活跟踪主观概率,帮助贝叶斯推理.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 决策 - 决策 - 决策 - 决策
背景情况:
- 适应性决策依赖于从不完整的信息中推断隐藏的状态.
- 贝叶斯逻辑为使用先前的概率和新证据更新信念提供了一个框架.
- 这种贝叶斯集成的基础的神经机制仍然不太清楚.
研究的目的:
- 为了研究整合先前概率和证据概率的神经基础,以推断隐藏状态.
- 在决策过程中确定大脑区域涉及近似贝叶斯推理.
主要方法:
- 功能磁共振成像 (fMRI) 用于记录大脑活动.
- 参与者执行了一项任务,需要推断隐藏状态的后面概率.
- 预先概率和证据概率被独立操纵,将它们与预期值分开.
主要成果:
- 在左侧尾皮层的激活独立跟踪主观后部概率.
- 这种激活反映了先前概率和证据概率的整合.
- 神经活动与客观概率的个体偏差相关.
结论:
- 左侧尾皮质是贝叶斯推理的候选神经基质.
- 这个地区在将先前的信念与适应性决策的新证据相结合方面发挥着关键作用.
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