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自觉的不确定性促进了手的幻觉

Marie Chancel¹, H Henrik Ehrsson²

¹Department of Neuroscience, Brain, Body and Self Laboratory, Karolinska Institutet, Sweden; Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, LPNC, Grenoble, France.

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

|June 3, 2023

概括

自觉的不确定性,或噪音,增加了经历手幻觉的可能性. 这表明,大脑的

科学领域:

神经科学是一个神经科学.
认知科学认知科学
心理学心理学心理学

背景情况:

身体所有权是对自己的身体的多感官感知.
贝叶斯因果推理模型通过评估视觉和触觉信号的共同来源的概率来解释身体所有权的错觉.
自身感知,身体位置的感觉,对于对身体所有权的感知至关重要.

研究的目的:

调查自身感知信息及其可靠性如何影响身体所有权感知中的贝叶斯因果推理过程.
为了检查自身感知噪声对手幻觉出现的影响.

主要方法:

利用基于手幻象的检测任务.
操纵视觉触觉刺激同步,并通过前臂肌振动引入自感噪声.
评估了参与者关于手是否感觉像他们自己的报告.

主要成果:

手幻觉的概率随着自身感知噪声水平的提高而增加.
观察到的结果与贝叶斯因果推理模型相符.
这些发现表明,由于自身感知不确定性,视觉和触觉的共同原因的先验概率发生了变化.

结论:

自身感知不确定性显著塑造了对自己身体的多感官感知.
大脑对身体所有权的推断受到自感信号的可靠性的影响.
这些发现提供了对身体所有权和自我认知背后的机制的新见解.

关键词:

贝叶斯因果推理贝叶斯因果推理意识到身体的意识.身体幻觉是一种身体幻觉.多感官集成的整合.自己的感觉 (proprioception).心理物理学的精神物理.

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