The N2 in go/no-go tasks reflects conflict monitoring not response inhibition

FCL Donkers*, GJM van Boxtel

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

The functional significance of the N2 in go/no-go tasks was investigated by comparing electrophysiological data obtained from two tasks: a go/no-go task involving both response inhibition as well as response conflict monitoring, and a go/GO task associated with conflict monitoring only. No response was required to no-go stimuli, and a response with maximal force to GO stimuli. The relative frequency of the go stimuli (80% vs. 50%) was varied. The N2 peaked on both no-go and GO trials, with larger amplitudes for both signals when presented in a context of frequent (80%) go signals. These results support the idea that the N2 reflects conflict monitoring not response inhibition.
Original languageEnglish
Pages (from-to)165-176
JournalBrain and Cognition
Volume56
Issue number2
DOIs
Publication statusPublished - Nov 2004
Externally publishedYes

Keywords

  • conflict monitoring
  • inhibition
  • go/no-go task
  • N200
  • N2
  • P300
  • P3

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