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Event-related brain potentials during auditory and visual word recognition memory tasks.

Jürgen Kayser1, Regan Fong, Craig E Tenke

  • 1New York State Psychiatric Institute, Department of Biopsychology, Box 50, 1051 Riverside Drive, New York, NY 10032, USA. kayserj@pi.cpmc.columbia.edu

Brain Research. Cognitive Brain Research
|February 19, 2003
PubMed
Summary

This study investigated the brain

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Area of Science:

  • Cognitive Neuroscience
  • Neuroimaging
  • Psychology

Background:

  • Event-related potentials (ERPs) reveal an 'old/new effect' in recognition memory, typically enhanced positivity for repeated items.
  • This effect has been well-characterized for visual stimuli but less so for auditory information.

Purpose of the Study:

  • To directly compare the ERP 'old/new effect' for words presented visually versus auditorily.
  • To investigate commonalities and differences in neural processing of recognition memory across sensory modalities.

Main Methods:

  • 16 participants completed visual and auditory continuous word recognition memory tasks.
  • Nose-referenced ERPs were recorded from 30 electrode sites.
  • Covariance-based principal components analysis identified ERP components.

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Main Results:

  • A comparable ERP 'old/new effect' was observed in both visual and auditory modalities, peaking around 560 ms.
  • Visual items showed a more anterior scalp topography for the old/new effect compared to auditory items.
  • An earlier negativity (370 ms) and a late negativity (>900 ms) were also modulated by item repetition, differing between modalities.

Conclusions:

  • Recognition memory involves common cognitive processes across modalities, supported by separable neural generators.
  • Modality-specific neural generators contribute to the observed differences in scalp topography and temporal dynamics of ERP components.
  • Early and late ERP components suggest distinct roles for semantic processing and post-retrieval processes in recognition memory.