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Late Positivity Correlates with Subjective Reports: Evidence from the Low-frequency and High-frequency Reporting Tasks.
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- Author(s): Ye M;Ye M;Ye M; Wang A; Wang A; Liang H; Liang H; Liu X; Liu X
- Source:
Neuroscience [Neuroscience] 2024 May 14; Vol. 546, pp. 143-156. Date of Electronic Publication: 2024 Apr 03.- Publication Type:
Journal Article; Research Support, Non-U.S. Gov't- Language:
English - Source:
- Additional Information
- Source: Publisher: Elsevier Science Country of Publication: United States NLM ID: 7605074 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1873-7544 (Electronic) Linking ISSN: 03064522 NLM ISO Abbreviation: Neuroscience Subsets: MEDLINE
- Publication Information: Publication: [New York?] : Elsevier Science
Original Publication: Oxford, Elmsford, N. Y., Pergamon Press - Subject Terms:
- Abstract: Identifying the neural correlates of consciousness (NCCs) is an important way to understand the fundamental nature of consciousness. By recording event-related potentials (ERPs) using EEG, researchers have found three potential electrophysiological NCCs: early positive correlate of consciousness (enhanced P1), visual awareness negativity (VAN), and late positivity (LP). However, LP may reflect post-perceptual processing associated with subjective reports rather than consciousness per se. The present experiment investigated the relationship between LP and subjective reports. We adopted two subjective reporting tasks that differed in the requirement for subjective reports. In the low-frequency reporting task, participants needed to report whether they saw the target picture in 25% of trials, whereas in the high-frequency reporting task, participants needed to report whether they saw the target picture in each trial. Behavioral results showed that the hit rates were lower and false alarm rates were higher on reporting trials in low-frequency reporting tasks than on reporting trials in high-frequency reporting tasks. Unexpectedly, VAN was larger on reporting trials in the low-frequency reporting task than on reporting trials in the high-frequency reporting task. Importantly, our ERP results showed that LP was larger on reporting trials in the high-frequency reporting task than on reporting trials in the low-frequency reporting task. Thus, our findings indicated that when the frequency of reports was increased, the task relevance of the stimuli increased, which led to larger LP amplitudes. These findings suggest that LP correlates with subjective reports.
(Copyright © 2024 IBRO. Published by Elsevier Inc. All rights reserved.) - Contributed Indexing: Keywords: event-related potentials; late positivity; neural correlates of consciousness; subjective reporting frequency; visual awareness negativity
- Publication Date: Date Created: 20240404 Date Completed: 20240506 Latest Revision: 20240506
- Publication Date: 20240507
- Accession Number: 10.1016/j.neuroscience.2024.03.034
- Accession Number: 38574798
- Source:
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