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政大典藏 > College of Liberal Arts > Department of Philosophy > Periodical Articles > Item 140.119/142661

Please use this identifier to cite or link to this item: https://nccur.lib.nccu.edu.tw/handle/140.119/142661

Title:	P3b does not Reflect Perceived Contrasts
Authors:	鄭會穎 Cheng, Tony Chen, Yen-Kuang Hsieh, Po-Jang
Contributors:	哲學系
Keywords:	attention;consciousness;ERP;neural correlate of consciousness;no-report paradigm;P3b
Date:	2022-03
Issue Date:	2022-12-02 15:23:20 (UTC+8)
Abstract:	It has been shown that P3b is not a signature of perceptual awareness per se but is instead more closely associated with postperceptual processing (Cohen et al., 2020). Here, we seek to investigate whether human participants’ attentional states are different in the report and the no-report conditions. This difference in attentional states, if exists, may lead to degraded consciousness of the stimuli in the no-report condition, and it therefore remains unknown whether the disappearance of P3b is because of a lack of reportability or degraded consciousness. Results of our experiment 1 showed that participants did experience degraded contents of consciousness in the no-report condition. However, results of experiment 2 showed that the degraded contents of consciousness did not influence the amplitude of P3b. These findings strengthen the claim that P3b is not a signature of perceptual awareness but is associated with postperceptual processing.
Relation:	eNeuro, Vol.9, No.2, pp.1-14
Data Type:	article
DOI link:	https://doi.org/10.1523/ENEURO.0387-21.2022
DOI:	10.1523/ENEURO.0387-21.2022
Appears in Collections:	[Department of Philosophy] Periodical Articles

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