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date: 14 July 2020

Abstract and Keywords

Writing words and nonwords involves distinct knowledge and processes in at least partly distinct neural substrates. In writing words, stored orthographic representations are retrieved from a semantic memory store. In writing nonwords, sublexical phoneme-grapheme correspondence procedures assemble the target string. Semantic-lexical and sublexical mechanisms interact, and target selection in the lexicon can be jointly constrained by semantic and sublexical input. Semantic-lexical processes involved in writing and speaking also interact—wordform selection for writing and speaking could result from an interaction of semantic-lexical and sublexical mechanisms. In addition to being functionally separable, lexical and sublexical knowledge and processes are also at least partially separable neurally. Left hemispheric regions are critical for the processing and representation of orthographic word forms; several perisylvian structures are crucial for sublexical phoneme-grapheme correspondence procedures. The neural substrates involved in writing words and nonwords partially overlap with those involved in reading the same materials.

Keywords: autonomy of orthographic word forms, lexical-sublexical interaction in writing, lexical/sublexical interactions in writing and speaking, neuroanatomical correlates of orthographic lexical and sublexical mechanisms

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