Event-related brain potentials reflecting processing of relevant and irrelevant stimuli during selective listening

K. Alho*, M. Sams, P. Paavilainen, K. Reinikainen, R. Naatanen

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

80 Citations (Scopus)

Abstract

Event-related brain potentials were recorded from the human scalp during selective listening to tone pips differing in location and/or pitch from irrelevant tones. The subjects' task was to discriminate infrequent deviant tones of lower intensity appearing among designated (relevant) tones. A large processing negativity was observed in the event-related potentials to relevant tones differing from the irrelevant tones in location even when both tones randomly varied in pitch. Similarly, a large processing negativity was elicited by the relevant tones differing from the irrelevant tones in pitch even when the location of both tones varied randomly. The results support the theory that the processing negativity to relevant stimuli reflects a match of these stimuli with an 'attentional trace', an actively maintained neuronal representation of the physical feature(s) of relevant stimuli that distinguish these stimuli from the irrelevant stimuli. Furthermore, the infrequent lower-intensity tones appearing among irrelevant tones elicited a mismatch negativity similar to the mismatch negativity elicited by target tones, equivalent lower-intensity tones appearing among relevant tones. This indicates that these infrequent stimulus changes were automatically discriminated by the generator mechanism associated with mismatch negativity.

Original languageEnglish
Pages (from-to)514-528
Number of pages15
JournalPsychophysiology
Volume26
Issue number5
DOIs
Publication statusPublished - Sep 1989
MoE publication typeA1 Journal article-refereed

Keywords

  • Attentional trace
  • Auditory event-related potential
  • Automatic processing
  • Mismatch negativity
  • Processing negativity
  • Selective attention

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