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Behavioural Neurology
Volume 26, Issue 3, Pages 171-173
http://dx.doi.org/10.3233/BEN-2012-129003

Toward an Executive Origin for Acquired Phonological Dyslexia: A Case of Specific Deficit of Context-Sensitive Grapheme-to-Phoneme Conversion Rules

Noémie Auclair-Ouellet,1,2,3 Marion Fossard,3 Marie-Catherine St-Pierre,4,5 and Joël Macoir2,4

1Programme de Médecine Expérimentale, Faculté de Médecine, Université Laval, Sainte-Foy, QC, Canada
2Centre de Recherche de I'Institut Universitaire en Santé Mentale de Québec, Québec, QC, Canada
3Institut des Sciences du Langage et de la Communication, Faculté des Lettres et Sciences Humaines, Université de Neuchâtel, Neuchâtel, Switzerland
4Programme de Maîtrise en Orthophonie, Département de Réadaptation, Faculté de Médecine, Université Laval, Sainte-Foy, QC, Canada
5Centre Interdisciplinaire de Recherche en Réadaptation et Intégration Sociale (CIRRIS), Québec, QC, Canada

Received 21 May 2012; Accepted 21 May 2012

Copyright © 2013 Hindawi Publishing Corporation and the authors. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Phonological dyslexia is a written language disorder characterized by poor reading of nonwords when compared with relatively preserved ability in reading real words. In this study, we report the case of FG, a 74-year-old man with phonological dyslexia. The nature and origin of his reading impairment were assessed using tasks involving activation and explicit manipulation of phonological representations as well as reading of words and nonwords in which the nature and complexity of grapheme-to-phoneme conversion rules (GPC rules) were manipulated. FG also underwent an extensive neuropsychological assessment battery in which he showed impaired performance in tests exploring verbal working memory and executive functions. FG showed no phonological impairment, and his performance was also largely unimpaired for reading words, with no effect of concreteness, grammatical class, morphological complexity, length or nature and complexity of the GPC rules. However, he showed substantial difficulties when asked to read nonwords with contextual GPC rules. The contribution of FG’s executive deficits to his performance in reading is discussed.