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Evidence for a priming-based asymmetry in color identification
Michael McCormick1, John J Seta2
1a Department of Psychology , Auburn University , Auburn , AL , USA.
Laterality
|April 18, 2018
Summary
Visual field asymmetries reveal that different colors prime different brain hemispheres. Red stimuli prime the right hemisphere more, while blue stimuli prime the left hemisphere more.
Area of Science:
- Cognitive Neuroscience
- Visual Perception
- Psychology
Background:
- Visual field asymmetries in color discrimination are typically studied using reaction times.
- Previous studies often show a left visual field advantage or no significant difference.
- Novel approaches are needed to explore subtler visual field effects.
Purpose of the Study:
- To investigate visual field asymmetries in color identification using a novel task.
- To explore potential differential priming effects of colors across visual fields.
- To examine psychological explanations for observed interactions.
Main Methods:
- A novel color identification task involving lateralized red and blue stimuli.
- Measurement of priming effects, distinct from mean or median reaction times.
- Data collection across a pilot study and two subsequent experiments.
Main Results:
- A significant visual field by color interaction was found in priming effects.
- Priming for red versus blue stimuli was greater in the left visual field.
- Priming for blue stimuli was greater in the right versus left visual field.
Conclusions:
- The left and right hemispheres are differentially primed by distinct colors.
- Red stimuli appear to prime the right hemisphere more effectively.
- Blue stimuli appear to prime the left hemisphere more effectively.
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