Articulatory processes and phonologic dyslexia

Background-Objective: Grapheme-to-phoneme conversion (GPC) allows the pronu nciation of nonword letter strings and of real words with which the literat e reader has no previous experience. Although cross-modal association betwe en visual (orthographic) and auditory (phonemic-input) representations may contribute to GPC, many cases of-deep or phonologic alexia result from inju ry to anterior perisylvian regions. Thus, GPC may rely upon associations be tween orthographic and articulatory (phonemic-output) representations. Meth od-Results-Conclusion: Detailed analysis of a patient with phonologic alexi a suggests that defective knowledge of the position and motion of the artic ulatory apparatus might contribute to impaired transcoding from letters to sounds.