A critical boundary to the left-hemisphere advantage in visual-word processing |
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Authors: | Deason Rebecca G Marsolek Chad J |
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Institution: | Department of Psychology, University of Minnesota, 75 East River Road, Minneapolis, MN 55455, USA. deas0007@umn.edu |
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Abstract: | Two experiments explored boundary conditions for the ubiquitous left-hemisphere advantage in visual-word recognition. Subjects perceptually identified words presented directly to the left or right hemisphere. Strong left-hemisphere advantages were observed for UPPERCASE and lowercase words. However, only a weak effect was observed for AlTeRnAtInG-cAsE words, and a numerical reversal of the typical left-hemisphere advantage was observed for words in a visual prototype font (a very unfamiliar word format). Results support the theory that dissociable abstract and specific neural subsystems underlie visual-form recognition and fail to support the theory that a visual lexicon operates in the left hemisphere. |
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Keywords: | Functional hemispheric asymmetries Letter case Case alternation Word recognition Categories Exemplars |
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