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在小鼠新皮层中进行与行为相关的上下交叉模式预测
Shuting Han1, Fritjof Helmchen2,3,4
1Brain Research Institute, University of Zurich, Zurich, Switzerland. han@hifo.uzh.ch.
Nature neuroscience
|January 4, 2024
概括
大脑通过优先考虑自上而下的预测或自下而上的感官信息来调和相互矛盾的预测和感官输入. 这项研究揭示了等级预测编码如何指导小鼠新皮质中的行为.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
背景情况:
- 动物预测他们的环境和适应行动.
- 预测编码假设表明大脑产生预测,并将其与感官输入进行比较.
- 调和相互矛盾的预测和感官信息的机制尚未完全理解.
研究的目的:
- 为了研究大脑如何解决上下预测和自下而上的感官信息之间的冲突.
- 探索层次预测编码在行为中的作用.
主要方法:
- 在小鼠体感管皮层和后壁皮层中同时对神经元群体进行成像.
- 使用听觉调节的纹理歧视任务与不匹配的刺激.
- 分析信息流的主导地位 (自上而下与自下而上).
主要成果:
- 不匹配的听觉线索和纹理在预测和感官输入之间产生了冲突.
- 主导的自上而下的信息流改变了纹理表示,导致基于预测的选择.
- 主导的自下而上的信息流导致正确的纹理表示和行为选择.
结论:
- 层次预测编码在小鼠新皮质中运行.
- 上下和自下而上的处理之间的平衡决定了当预测与感官输入相冲突时的行为结果.
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