先前决策的重新激活会以排斥性的方式偏向感官编码,但会以有吸引力的方式偏向决策
Minghao Luo1,2, Huihui Zhang1,2,3,4, Fang Fang1,2,3,5
1School of Psychological and Cognitive Sciences and Beijing Key Laboratory of Behavior and Mental Health, Peking University, Beijing, China.
PLoS biology
|April 23, 2025
概括
当前的感知是由过去的经验通过一个两阶段的神经机制. 这涉及过去的报道影响当前的编码和决策,与不同的大脑区域和时间排斥和吸引力效应.
科学领域:
- 认知神经科学 认知神经科学
- 神经科学是一个神经科学.
- 计算神经科学是一种神经科学.
背景情况:
- 感知是由过去的经验塑造的,这种现象被称为串行依赖,当前的感知被以前的试验所偏见.
- 人类大脑中这种时间影响背后的精确神经机制在很大程度上是未知的.
- 了解串行依赖提供了关于大脑如何利用环境规律的见解.
研究的目的:
- 阐明人类大脑中序列依赖的操作循环的神经实现.
- 研究时间动态和参与过去和现在信息处理之间的相互作用的大脑区域.
- 区分过去刺激与过去报告在驱动感知偏差中的作用.
主要方法:
- 在人类参与者中利用电脑学 (EEG) 和磁脑学 (MEG) 记录.
- 员工推迟反应任务,以探讨过去的试验对当前感知的影响.
- 在编码和决策阶段分析神经活动,以确定过去与现在相互作用的不同阶段.
主要成果:
- 证明了一种基于串行依赖的两阶段"排斥-然后-吸引"机制.
- 确定了过去的试验报告,而不是刺激,在编码和决策过程中被重新激活并充当先验.
- 表明早期的排斥性阶段发生在感官皮质中,而后期的吸引性阶段发生在前额叶皮质中,并且是任务调节的.
结论:
- 这些发现揭示了序列依赖的特定两阶段神经机制,涉及不同的时间动态和大脑区域.
- 过去的试验报告作为先验起着至关重要的作用,通过自动和调制的过程影响知觉.
- 这项研究为了解过去的经验如何动态地塑造持续的感知和决策提供了一个框架.
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