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Picture-name priming in the cerebral hemispheres

J Coney1, M Abernethy

  • 1Psychology Department, Murdoch University, Western Australia.

Brain and Language
|August 1, 1994
PubMed
Summary

Visual and verbal object representations are processed similarly across brain hemispheres. Picture-name priming effects were independent of visual field presentation, suggesting shared representational systems.

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Area of Science:

  • Cognitive Neuroscience
  • Visual Perception
  • Language Processing

Background:

  • Investigating the interplay between visual and verbal information processing.
  • Examining hemispheric specialization in representing object information.

Purpose of the Study:

  • To determine if visual and verbal representations of objects are processed differently across brain hemispheres.
  • To explore the relationship between visual and verbal representations within and between hemispheres.

Main Methods:

  • Lexical decision task using pictures and names of common objects.
  • Stimuli presented to left or right visual fields.
  • Assessing priming effects and response times based on stimulus presentation.

Main Results:

  • A strong priming effect occurred when an object's name followed its picture, irrespective of visual field presentation.
  • This priming effect suggests representational systems for pictures and names are not differentially specialized across hemispheres.
  • Response times to words were faster when stimuli were presented to different visual fields.

Conclusions:

  • Activation of name codes is independent of the visual field of stimulus presentation.
  • Hemispheric specialization does not appear to differentiate picture and name processing.
  • Cross-hemispheric processing may enhance verbal stimulus processing, potentially by avoiding interference from concurrent visual processing within a hemisphere.

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