与神经皮层神经元决定相关的信心表示
Roozbeh Kiani1, Michael N Shadlen
1Howard Hughes Medical Institute, National Primate Research Center and Department of Physiology and Biophysics, University of Washington, Seattle, WA 98195, USA. roozbeh@u.washington.edu
概括
决策和选择确定性的神经机制在 rhesus 子中进行了研究. 代表决策的同样的脑皮层神经元也编码了确定性,揭示了信心如何影响选择.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 决策研究 决策研究
背景情况:
- 在灵长类动物中,知觉决策机制得到了很好的研究.
- 选择确定性的神经支在很大程度上是未知的.
- 对决策的信心提供了对结果的分级评估.
研究的目的:
- 调查选择的神经机制在决策中的确定性.
- 为了确定与决策相关的神经活动是否也编码了信心.
- 了解信心如何影响承诺或选择退出的决定.
主要方法:
- rhesus 子执行了不同难度的方向区分任务.
- 一个小组的试验允许子选择退出保证的奖励,揭示了选择确定性.
- 在决策过程中记录了头顶皮层神经活动.
主要成果:
- 发现在头顶皮层的神经元代表了决定本身和确定性的程度.
- 子的选择退出行为与他们评估的决策确定性水平相关.
- 这表明决定形成和信心的统一神经表征.
结论:
- 皮质在编码决策和对决策的信心方面发挥着至关重要的作用.
- 确定性的神经表示与决策过程相结合.
- 这一发现提升了我们对自信和选择行为的神经基础的理解.
相关概念视频
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Frontal lobe
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Frontal lobe
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