Semantic memory impairment does not impact on phonological and orthographic processing in a case of developmental hyperlexia.
Publication/Presentation Date
2-1-1997
Abstract
Recent evidence from patients with progressive language disorders and dementia has been used to suggest that phonological and orthographic processing depend on intact semantic memory. These claims challenge the traditional view that there are functionally separate modules in the language system. The effect of a severe, but nonprogressive, semantic impairment on phonological and orthographic processing was evaluated in LA, a mentally retarded child with hyperlexia. Knowledge of a word's meaning did not affect LA's word repetition, a measure of phonological processing, or his acquisition and retention of orthographic patterns for writing to dictation low-frequency words with exceptional spellings. These findings support the assertion that both orthographic and phonological whole-word representations can be acquired, stored, and retrieved in the absence of a functional link to semantic memory.
Volume
56
Issue
2
First Page
234
Last Page
247
ISSN
0093-934X
Published In/Presented At
Glosser, G., Grugan, P., & Friedman, R. B. (1997). Semantic memory impairment does not impact on phonological and orthographic processing in a case of developmental hyperlexia. Brain and language, 56(2), 234–247. https://doi.org/10.1006/brln.1997.1801
Disciplines
Medicine and Health Sciences | Psychiatry
PubMedID
9027372
Department(s)
Department of Psychiatry
Document Type
Article