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Related Experiment Videos

Separable effects of priming and imageability on word processing: an ERP study.

Tamara Y Swaab1, Kathleen Baynes, Robert T Knight

  • 1Department of Psychology, University of California, One Shields Avenue, Davis, CA 95616-8686, USA. swaab@ucdavis.edu

Brain Research. Cognitive Brain Research
|November 16, 2002
PubMed
Summary

Concrete words are easier to understand because they activate distinct verbal and image-based semantic systems. This imageability effect is independent of contextual support, suggesting separate processing pathways for concrete and abstract word comprehension.

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Area of Science:

  • Cognitive Neuroscience
  • Psycholinguistics
  • Semantics

Background:

  • The concreteness effect suggests concrete words are easier to process than abstract words.
  • This may indicate separate verbal and image-based semantic systems or better contextual associations for concrete words.
  • Previous research has not fully distinguished between these possibilities.

Purpose of the Study:

  • To investigate whether the imageability effect relies on distinct semantic systems or contextual associations.
  • To examine the influence of contextual support on the processing of concrete versus abstract words.
  • To determine the neural underpinnings of the imageability effect using event-related potentials (ERPs).

Main Methods:

  • Participants processed high and low imageable target words preceded by either related or unrelated context words.

Related Experiment Videos

  • Event-related brain potentials (ERPs) were recorded to measure brain activity.
  • Topographic distributions of ERPs were analyzed to differentiate neural processing.

    • Main Results:

    • A significant difference in ERP topographic distributions was observed between high and low imageable words.
    • This imageability effect was independent of the contextual support provided.
    • Contextual support did not modulate the neural processing differences related to imageability.

    Conclusions:

    • The findings support the existence of distinct verbal and image-based semantic codes for word representations.
    • Concrete words are processed more easily due to their engagement of these separate image-based systems.
    • The imageability effect is a fundamental property of semantic representation, not solely dependent on contextual priming.