“洞”和“无洞”图形的知觉加工的时程：一项 ERP 研究。
Time-course of perceptual processing of "hole" and "no-hole" figures: an ERP study.
机构信息
School of Information Science, Yunnan University, Kunming, 650092, China.
出版信息
Neurosci Bull. 2013 Feb;29(1):47-57. doi: 10.1007/s12264-012-1290-y. Epub 2012 Dec 27.
Closure or the presence of a "hole" is an emergent perceptual feature that can be extracted by the visual system early on. This feature has been shown to have perceptual advantages over openness or "no-hole". in this study, we investigated when and how the human brain differentiates between "hole" and "no-hole" figures. Event-related potentials (ERPs) were recorded during a passive observation paradigm. Two pairs of simple figures (Experiment 1) and two sets of Greek letters (Experiment 2) were used as stimuli. The ERPs of "hole" and "no-hole" figures differed ∼90 ms after stimulus onset: "hole" figures elicited smaller P1 and N1 amplitudes than "no-hole" figures. These suggest that both P1 and N1 components are sensitive to the difference between "hole" and "no-hole" figures; perception of "hole" and "no-hole" figures might be differentiated early during visual processing.
闭合或存在“孔”是一种新兴的知觉特征，可以由视觉系统尽早提取。该特征在感知上优于开放性或“无孔”。在这项研究中，我们研究了人类大脑何时以及如何区分“孔”和“无孔”图形。在被动观察范式中记录事件相关电位 (ERP)。使用两对简单图形（实验 1）和两组希腊字母（实验 2）作为刺激。“孔”和“无孔”图形的 ERP 在刺激开始后约 90 毫秒出现差异：“孔”图形的 P1 和 N1 振幅小于“无孔”图形。这表明 P1 和 N1 成分都对“孔”和“无孔”图形之间的差异敏感；“孔”和“无孔”图形的感知可能在视觉处理的早期就有所区分。
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