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Olfactory, auditory, and visual erps from single trials: No evidence for habituation

Academic Article
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Overview

authors

  • Wetter, S.
  • Polich, John
  • Murphy, C.

publication date

  • November 2004

journal

  • International Journal of Psychophysiology  Journal

abstract

  • Event-related potentials (ERPs) using olfactory, auditory, and visual stimuli were recorded from young adults to assess possible component habituation across single trials among modalities. A single-stimulus ERP paradigm was used that employed a 10-min inter-stimulus interval (ISI) to minimize possible sensory adaptation and three stimulus trials for each modality to assess initial habituation effects. The present findings were: (1) P3 amplitude does not habituate appreciably over the initial three trials but may increase from the first to second trial. (2) ERPs from a single-stimulus paradigm with a very long ISI produce significantly correlated component amplitudes for the olfactory, auditory, and visual modalities. (3) P3 amplitude from olfactory stimuli demonstrated scalp topography similar to that for auditory and visual ERPs. These findings suggest that the single-stimulus task using a long ISI produces highly comparable and stable P3 components from olfactory, auditory, and visual stimuli. Application of single-stimulus paradigm to olfactory ERP methods is supported.

subject areas

  • Adult
  • Evoked Potentials, Auditory
  • Evoked Potentials, Somatosensory
  • Evoked Potentials, Visual
  • Female
  • Habituation, Psychophysiologic
  • Humans
  • Male
  • Smell
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Research

keywords

  • P300
  • habituation
  • olfactory event-related potentials (ERPs)
  • single-stimulus paradigm
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Identity

International Standard Serial Number (ISSN)

  • 0167-8760

Digital Object Identifier (DOI)

  • 10.1016/j.ijphyscho.2004.04.008

PubMed ID

  • 15331217
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Additional Document Info

start page

  • 263

end page

  • 272

volume

  • 54

issue

  • 3

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