The effects of response sharing and stimulus presentation frequency on event-related potentials in an auditory oddball paradigm

János Horváth, Urte Roeber, Erich Schröger

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

An experimental model for investigating the processes involved in reacting to unpredictable events is the oddball paradigm. We investigated how the commonality or independence of response options (i.e., many-to-one vs. one-to-one stimulus-response mappings) influences processing in an auditory oddball paradigm. Participants performed a discrimination task with two one-to-one and one two-to-one mappings. The pattern of conflict- and oddball-related N2 event-related potentials suggest that information that would allow correct responding is represented at the latency of the N2. Integration of this information takes place only by the latency of P3b, and longer reaction times to rare stimuli are probably due to processes preventing the utilization of this information. We also suggest that, in the given task context, conflict-related N2 may reflect the number of alternative stimuli leading to alternative response options.

Original languageEnglish
Pages (from-to)931-941
Number of pages11
JournalPsychophysiology
Volume47
Issue number5
DOIs
Publication statusPublished - Sep 2010

Keywords

  • Attention
  • Categorization
  • Conflict
  • Event related potentials (ERP)
  • N2
  • Oddball paradigm
  • P3a
  • P3b

ASJC Scopus subject areas

  • Neuroscience(all)
  • Neuropsychology and Physiological Psychology
  • Experimental and Cognitive Psychology
  • Neurology
  • Endocrine and Autonomic Systems
  • Developmental Neuroscience
  • Cognitive Neuroscience
  • Biological Psychiatry

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