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Electrophysiological Chronometry of Graded Consciousness during the Attentional Blink
Cerebral Cortex ( IF 3.7 ) Pub Date : 2021-07-26 , DOI: 10.1093/cercor/bhab289
Anna Eiserbeck 1 , Alexander Enge 1, 2 , Milena Rabovsky 3 , Rasha Abdel Rahman 1
Affiliation  

One of the ongoing debates about visual consciousness is whether it can be considered as an all-or-none or a graded phenomenon. While there is increasing evidence for the existence of graded states of conscious awareness based on paradigms such as visual masking, only little and mixed evidence is available for the attentional blink paradigm, specifically in regard to electrophysiological measures. Thereby, the all-or-none pattern reported in some attentional blink studies might have originated from specifics of the experimental design, suggesting the need to examine the generalizability of results. In the present event-related potential (ERP) study (N = 32), visual awareness of T2 face targets was assessed via subjective visibility ratings on a perceptual awareness scale in combination with ERPs time-locked to T2 onset (components P1, N1, N2, and P3). Furthermore, a classification task preceding visibility ratings allowed to track task performance. The behavioral results indicate a graded rather than an all-or-none pattern of visual awareness. Corresponding graded differences in the N1, N2, and P3 components were observed for the comparison of visibility levels. These findings suggest that conscious perception during the attentional blink can occur in a graded fashion.

中文翻译:

注意眨眼期间分级意识的电生理计时

关于视觉意识的持续争论之一是它是否可以被视为一种全有或全无或分级现象。虽然越来越多的证据表明存在基于视觉掩蔽等范式的意识意识分级状态,但对于注意眨眼范式,特别是在电生理测量方面,只有很少和混合的证据可用。因此,在一些注意眨眼研究中报告的全有或全无模式可能源于实验设计的细节,这表明需要检查结果的普遍性。在目前的事件相关电位 (ERP) 研究 (N = 32) 中,T2 面部目标的视觉意识通过感知意识量表上的主观能见度评级结合时间锁定到 T2 发作的 ERPs(组件 P1、N1、 N2, 和 P3)。此外,在可见性评级之前的分类任务允许跟踪任务绩效。行为结果表明视觉意识是分级的,而不是全有或全无的模式。为了比较能见度水平,观察了 N1、N2 和 P3 分量的相应分级差异。这些发现表明,在注意眨眼期间的有意识感知可以以分级的方式发生。
更新日期:2021-07-26
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