对数字和字母的检测和识别意识的电生理学相关性
Stefan Wiens1, Mingailė Greičiūtė1, Billy Gerdfeldter1
1Stockholm University, Department of Psychology, Sweden.
Neuropsychologia
|January 19, 2026
概括
视觉意识消极性 (VAN) 对基本检测和复杂的识别意识都很敏感. 然而,VAN在区分这些低级和高级意识体验方面表现出有限的特异性.
科学领域:
- 认知神经科学 认知神经科学
- 意识的神经科学 意识的神经科学
- 视觉感知 视觉感知 视觉感知
背景情况:
- 意识涉及将外部事件与主观经验联系在一起,从低级别的检测到高级别的识别.
- 意识的神经相关物 (NCC) 是与这些体验相关的大脑过程.
- 视觉意识消极性 (VAN),一个与事件相关的潜力,是视觉中的候选NCC,在刺激后约200ms出现.
研究的目的:
- 调查VAN是否对检测意识 (低级) 或识别意识 (高级) 更敏感.
- 为了确定刺激的大小是否会影响VAN对识别意识的敏感性.
主要方法:
- 两个预先注册的实验使用了自适应式楼梯来操纵刺激的不透明度,以检测或识别意识.
- 实验1 (N=15+15) 使用数字或字母/数字.
- 实验2 (N=28) 使用不同的数字大小来评估识别意识.
主要成果:
- 在实验1中,VAN对检测和识别意识表现出类似的敏感性.
- 在实验2中,VAN被观察到两个数字大小,不受刺激大小的影响.
- VAN信号显示了低级检测和高级识别的可比响应.
结论:
- VAN对低级 (检测) 和高级 (识别) 的意识体验都很敏感.
- VAN在区分低级和高级视觉意识方面表现出有限的特异性.
- 这些发现强调了VAN在一般意识中的作用,但警告不要使用它来区分特定水平的感知体验.
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