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P300, habituation, and response-mode

Academic Article
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Overview

authors

  • Lew, G. S.
  • Polich, John

publication date

  • January 1993

journal

  • Physiology & Behavior  Journal

abstract

  • The P3(00) event-related brain potential (ERP) was elicited with an auditory discrimination paradigm under two response task conditions in which the probability of the target tone was always 0.20. Subjects either counted the occurrence of each target tone or pressed a button to the target in different conditions. No response was made to the standard tone. Consecutive blocks of trials were obtained to assess habituation of P3 amplitude. The count task demonstrated less habituation than the button-press task, with a strong interaction obtained between response mode and trial block for all electrode sites. The findings suggest that habituation of P3 amplitude is sensitive to the amount of attentional resources allocated to the processing of a target stimulus, with more resources required for a count task compared to fewer needed for a button-press response.

subject areas

  • Adult
  • Arousal
  • Attention
  • Cerebral Cortex
  • Electroencephalography
  • Evoked Potentials, Auditory
  • Female
  • Habituation, Psychophysiologic
  • Humans
  • Male
  • Mental Recall
  • Pitch Discrimination
  • Reaction Time
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Research

keywords

  • ERP
  • HABITUATION
  • P3(00)
  • RESPONSE TASK
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Identity

International Standard Serial Number (ISSN)

  • 0031-9384

Digital Object Identifier (DOI)

  • 10.1016/0031-9384(93)90018-b

PubMed ID

  • 8434050
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Additional Document Info

start page

  • 111

end page

  • 117

volume

  • 53

issue

  • 1

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