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PLoS One. 2014 Jun 16;9(6):e99909. doi: 10.1371/journal.pone.0099909. eCollection 2014.

Event-related potentials for post-error and post-conflict slowing.

Author information

1
Department of Psychology, National Taiwan University, Taipei, Taiwan.
2
Department of Psychology, National Taiwan University, Taipei, Taiwan; Center for Neurobiology and Cognitive Science, National Taiwan University, Taipei, Taiwan.
3
Department of Psychiatry, Yale University, New Haven, Connecticut, United States of America; Department of Neurobiology, Yale University, New Haven, Connecticut, United States of America; Interdepartmental Neuroscience Program, Yale University, New Haven, Connecticut, United States of America.

Abstract

In a reaction time task, people typically slow down following an error or conflict, each called post-error slowing (PES) and post-conflict slowing (PCS). Despite many studies of the cognitive mechanisms, the neural responses of PES and PCS continue to be debated. In this study, we combined high-density array EEG and a stop-signal task to examine event-related potentials of PES and PCS in sixteen young adult participants. The results showed that the amplitude of N2 is greater during PES but not PCS. In contrast, the peak latency of N2 is longer for PCS but not PES. Furthermore, error-positivity (Pe) but not error-related negativity (ERN) was greater in the stop error trials preceding PES than non-PES trials, suggesting that PES is related to participants' awareness of the error. Together, these findings extend earlier work of cognitive control by specifying the neural correlates of PES and PCS in the stop signal task.

PMID:
24932780
PMCID:
PMC4059667
DOI:
10.1371/journal.pone.0099909
[Indexed for MEDLINE]
Free PMC Article

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