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Semantics and semantic errors: implicit access to semantic information from words and nonwords in deep dyslexia
Lori Buchanan1, Shannon McEwen, Chris Westbury
1Department of Psychology, University of Windsor, 173 Chrysler Hall South, 401 Sunset Avenue, Windsor, Ontario, N9B 3P4, Canada. buchanan@uwindsor.ca
Brain and Language
|January 23, 2003
Summary
Deep dyslexia patients show implicit semantic access despite reading impairments. This suggests separate pathways for word recognition and meaning retrieval in the brain.
Area of Science:
- Neuroscience
- Psycholinguistics
- Cognitive Psychology
Background:
- Deep dyslexia is an acquired reading disorder.
- Characterized by morphological and semantic errors.
- Offers insights into language system components.
Observation:
- A patient with deep dyslexia (JO) was studied.
- JO exhibited implicit semantic access.
- JO could not correctly read items aloud.
Findings:
- Dissociation between implicit and explicit semantic access.
- Implicit access to semantic information was demonstrated.
- Explicit reading aloud was impaired.
Implications:
- Supports models distinguishing explicit and implicit lexical access.
- Highlights the role of inhibitory processes in lexical deficits.
- Provides a window into semantic processing and reading disorders.