Articulatory processes and phonologic dyslexia.
OBJECTIVE
Grapheme-to-phoneme conversion (GPC) allows the pronunciation of nonword letter strings and of real words with which the literate reader has no previous experience. Although cross-modal association between visual (orthographic) and auditory (phonemic-input) representations may contribute to GPC, many cases of deep or phonologic alexia result from injury to anterior perisylvian regions. Thus, GPC may rely upon associations between orthographic and articulatory (phonemic-output) representations.
Detailed analysis of a patient with phonologic alexia suggests that defective knowledge of the position and motion of the articulatory apparatus might contribute to impaired transcoding from letters to sounds.
Adair
J C
JC
Department of Veterans Affairs Medical Center, and the Center for Neuropsychological Studies and the Department of Neurology, College of Medicine, University of Florida, Gainesville 32610-0236, USA.
Schwartz
R L
RL
Williamson
D J
DJ
Raymer
A M
AM
Heilman
K M
KM
D000368:Aged; D002545:Brain Ischemia / Q000150:complications* / Q000175:diagnosis; D003072:Cognition Disorders / Q000209:etiology*; D004411:Dyslexia, Acquired / Q000145:classification* / Q000209:etiology*; D006801:Humans; D008297:Male; D009483:Neuropsychological Tests; D010700:Phonetics