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Different Stages, Different Signals: The Modulating Effect of Cognitive Conflict on Subsequent Processing

The present study used event-related potentials (ERPs) to investigate the function of signals induced by cognitive conflict during the detection stage and the resolution stage of perceptual processing. The study used a combination of the Stroop task and an affective priming task to examine the confl...

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Detalles Bibliográficos
Autores principales: Pan, Fada, Shi, Liang, Zhang, Li, Lu, Qingyun, Xue, Song
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5026368/
https://www.ncbi.nlm.nih.gov/pubmed/27636368
http://dx.doi.org/10.1371/journal.pone.0163263
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author Pan, Fada
Shi, Liang
Zhang, Li
Lu, Qingyun
Xue, Song
author_facet Pan, Fada
Shi, Liang
Zhang, Li
Lu, Qingyun
Xue, Song
author_sort Pan, Fada
collection PubMed
description The present study used event-related potentials (ERPs) to investigate the function of signals induced by cognitive conflict during the detection stage and the resolution stage of perceptual processing. The study used a combination of the Stroop task and an affective priming task to examine the conflict priming effect when the stimulus onset asynchrony (SOA) was 200 ms or 800 ms. Behavioral results showed that the RTs were shorter for positive targets following congruent primes relative to incongruent primes, and for negative targets following incongruent primes relative to congruent primes when the SOA was 200 ms. ERP results showed that the N2 amplitudes (200–300 ms) for incongruent stimuli were significantly larger than for congruent stimuli in the Stroop task, which indicated a significant conflict effect. Moreover, the N400 amplitudes (500–700 ms) for positive targets after congruent primes were significantly lower than those after incongruent primes when the SOA was 200 ms, which showed a significant negative priming effect. While the SOA was 800 ms, behavioral results showed that the RTs were shorter for positive targets following incongruent primes relative to congruent primes. ERP results showed that the N2 amplitudes (200–300 ms) for incongruent stimuli were significantly larger than for congruent stimuli in the Stroop task, which indicated a significant conflict effect. The N400 amplitudes (1100–1300 ms) for the negative targets after congruent primes were significantly lower than those after incongruent primes when the SOA was 800 ms, which showed a significant positive priming effect. The results demonstrated that the functions of signals induced by cognitive conflict were reversed in two different cognitive processing stages.
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spelling pubmed-50263682016-09-27 Different Stages, Different Signals: The Modulating Effect of Cognitive Conflict on Subsequent Processing Pan, Fada Shi, Liang Zhang, Li Lu, Qingyun Xue, Song PLoS One Research Article The present study used event-related potentials (ERPs) to investigate the function of signals induced by cognitive conflict during the detection stage and the resolution stage of perceptual processing. The study used a combination of the Stroop task and an affective priming task to examine the conflict priming effect when the stimulus onset asynchrony (SOA) was 200 ms or 800 ms. Behavioral results showed that the RTs were shorter for positive targets following congruent primes relative to incongruent primes, and for negative targets following incongruent primes relative to congruent primes when the SOA was 200 ms. ERP results showed that the N2 amplitudes (200–300 ms) for incongruent stimuli were significantly larger than for congruent stimuli in the Stroop task, which indicated a significant conflict effect. Moreover, the N400 amplitudes (500–700 ms) for positive targets after congruent primes were significantly lower than those after incongruent primes when the SOA was 200 ms, which showed a significant negative priming effect. While the SOA was 800 ms, behavioral results showed that the RTs were shorter for positive targets following incongruent primes relative to congruent primes. ERP results showed that the N2 amplitudes (200–300 ms) for incongruent stimuli were significantly larger than for congruent stimuli in the Stroop task, which indicated a significant conflict effect. The N400 amplitudes (1100–1300 ms) for the negative targets after congruent primes were significantly lower than those after incongruent primes when the SOA was 800 ms, which showed a significant positive priming effect. The results demonstrated that the functions of signals induced by cognitive conflict were reversed in two different cognitive processing stages. Public Library of Science 2016-09-16 /pmc/articles/PMC5026368/ /pubmed/27636368 http://dx.doi.org/10.1371/journal.pone.0163263 Text en © 2016 Pan et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Pan, Fada
Shi, Liang
Zhang, Li
Lu, Qingyun
Xue, Song
Different Stages, Different Signals: The Modulating Effect of Cognitive Conflict on Subsequent Processing
title Different Stages, Different Signals: The Modulating Effect of Cognitive Conflict on Subsequent Processing
title_full Different Stages, Different Signals: The Modulating Effect of Cognitive Conflict on Subsequent Processing
title_fullStr Different Stages, Different Signals: The Modulating Effect of Cognitive Conflict on Subsequent Processing
title_full_unstemmed Different Stages, Different Signals: The Modulating Effect of Cognitive Conflict on Subsequent Processing
title_short Different Stages, Different Signals: The Modulating Effect of Cognitive Conflict on Subsequent Processing
title_sort different stages, different signals: the modulating effect of cognitive conflict on subsequent processing
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5026368/
https://www.ncbi.nlm.nih.gov/pubmed/27636368
http://dx.doi.org/10.1371/journal.pone.0163263
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