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在人类前额叶皮质的信心计算的时间

Kai Xue¹, Yunxuan Zheng¹, Farshad Rafiei¹

¹School of Psychology, Georgia Institute of Technology, Atlanta, GA, USA.

Cortex; a journal devoted to the study of the nervous system and behavior

|September 23, 2023

概括

信心计算的时间是理解元认知的关键. 在刺激呈现后200-500ms之间向右侧前额叶皮层 (DLPFC) 进行跨磁刺激 (TMS),增加了信心,表明计算在决策最终之前开始.

科学领域:

神经科学是一个神经科学.
认知科学认知科学
计算精神病学是一种计算精神病学.

背景情况:

了解信心计算的时间对于阐明元认知的神经和计算基础至关重要.
以前的研究已经确定了信心判断的神经相关性,但基本上忽视了这些计算的时间动态.

研究的目的:

研究人类大脑中发生信心计算的时间窗口.
确定右背侧前额叶皮质 (DLPFC) 在建立信心及其时间方面的因果作用.

主要方法:

在视觉刺激呈现后的不同时间应用单脉冲横磁刺激 (TMS) 到右DLPFC或顶点 (控制).
参与者执行了方向判断任务,并为他们的决定提供了信心评级.
分析了TMS时间和位置对准确性,信心和元认知效率的影响.

主要成果:

对右边的DLPFC应用的TMS,但不是顶点,显著提高了主观的信心评级.
这种增加的信心发生在没有改变客观准确性或元认知效率的情况下.
对右DLPFC TMS对信心的影响观察到在刺激开始后200至500毫秒之间传递的脉冲.

结论:

自信计算涉及一个长时间的时间窗口,延伸到一个感知决策完全完成之前的时期.
正确的DLPFC在这个宽的时间窗口期间在调节信心方面发挥了因果作用.
这些发现为产生信心和元认知的计算模型提供了关键的约束.

关键词:

信心信心信心信心信心在 DLPFCFC 中,超认知 (Metacognition) 是一种表认知 (metacognition) 的方法.感知性决策感知性决策在TMSMS中使用.

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