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A dedicated neural mechanism for vowel selection: A case of relative vowel deficit sparing the number lexicon (Articolo in rivista)

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A dedicated neural mechanism for vowel selection: A case of relative vowel deficit sparing the number lexicon (Articolo in rivista) (literal)

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Semenza C, Bencini GML , Bertella L, Moric I, Pignattia R, Cerianic F, Cherrick D, Magno Caldognetto E (2007)
A dedicated neural mechanism for vowel selection: A case of relative vowel deficit sparing the number lexicon
in Neuropsychologia (Print)
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Semenza C, Bencini GML , Bertella L, Moric I, Pignattia R, Cerianic F, Cherrick D, Magno Caldognetto E (literal)

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a University of Trieste, Italy b Department of Psychology, Hunter College, City University of New York, 695 Park Avenue, New York, NY 10021, United States c Istituto Auxologico Italiano, Verbania, Italy d University of Bergamo, Italy e Clinica Hildebrand, Brissago, TI, Switzerland f Istituto di Scienze e Tecnologie della Cognizione, CNR, Fonetica e Dialettologia, Padova, Italy (literal)

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A dedicated neural mechanism for vowel selection: A case of relative vowel deficit sparing the number lexicon (literal)

Abstract

We report the case of an Italian speaker (GBC), with classical Wernickes aphasia following a vascular lesion in the posterior middle temporal region. GBC exhibited a selective deficit in spoken language production affecting vowels more than consonants. In reading from a newspaper, GBC substituted vowels for other vowels from the Italian inventory at a rate of 7/1 compared to consonants. No effects of frequency or grammatical class were found. Vowel errors could also not be accounted for by morphological or known phonological processes. Production of number words, in contrast, was free from phonological errors. While GBC has intact representations of Italian vowels and consonants, his data argue for a separate selection mechanism for vowels that is dissociable from that used for consonants. This case provides neuropsychological evidence for models of word production that distinguish between the abstract phonological properties of a word (e.g., sequencing of phonemic slots, or CV skeleton) and a separate representation for the specific sounds (melody). © 2006 Elsevier Ltd. All rights reserved. (literal)

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