常见的神经选择信号反映了累积的证据,而不是信心
Kobe Desender1, Andi Smet1, Deniz Erdil1
1Brain and Cognition, KU Leuven, Tiensestraat 102, 3000 Leuven, Belgium.
Cerebral cortex (New York, N.Y. : 1991)
|September 9, 2025
概括
脑电图信号与信心相关,但反映的是累积的证据,而不是信心本身. 操纵先前的信念改变了信心而不影响准确性,确认这些信号跟踪用于信心计算的证据.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 计算神经科学是一种神经科学.
背景情况:
- 众所周知,脑电图 (EEG) 的信号,特别是中脑周周阳性和错误阳性,与主观信心水平相关.
- 计算模型表明,这些信号可能反映了潜在的证据积累过程,而不是直接的信心.
研究的目的:
- 为了因果调查,是否中心-平行脑电图信号反映累积的证据或信心本身.
- 区分证据积累理论和这些神经信号的信任跟踪理论.
主要方法:
- 对先前的信念进行因果操纵,以选择性地影响信心.
- 对准确性和反应时间的行为评估.
- 对EEG信号的分析 (中心 - 体阳性,错误阳性,α和β波段振荡) 和解码分析.
主要成果:
- 对先前信念的行为操纵改变了信心水平,但没有显著影响准确性或反应时间.
- 脑电图 (EEG) 信号 (中心-双关节阳性和错误阳性) 与报告的信心有着单调的关系.
- 最重要的是,这些EEG信号对操纵先前的信念保持不敏感,表明它们跟踪累积的证据.
- 阿尔法和β频段振荡也不受先前的信念操纵的影响.
- 解码分析确定了先前信念和信心的共享神经表征,其中有一种特定的正面信号对两者都敏感.
结论:
- 这项研究提供了因果证据,即中心-双侧脑电图信号反映了用于计算信心的积累证据,而不是信心本身.
- 这些发现支持计算模型的假设,这些神经信号是证据积累的标记.
- 大脑保持了先前信念和信心的综合表示,每个人都有不同的神经特征.
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