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Picture-name priming in the cerebral hemispheres
1Psychology Department, Murdoch University, Western Australia.
Brain and Language
|August 1, 1994
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.
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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