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Enhanced Sensitivity to Subphonemic Segments in Dyslexia: A New Instance of Allophonic Perception

Although dyslexia can be individuated in many different ways, it has only three discernable sources: a visual deficit that affects the perception of letters, a phonological deficit that affects the perception of speech sounds, and an audio-visual deficit that disturbs the association of letters with...

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Autores principales: Serniclaes, Willy, Seck, M’ballo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5924390/
https://www.ncbi.nlm.nih.gov/pubmed/29587419
http://dx.doi.org/10.3390/brainsci8040054
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author Serniclaes, Willy
Seck, M’ballo
author_facet Serniclaes, Willy
Seck, M’ballo
author_sort Serniclaes, Willy
collection PubMed
description Although dyslexia can be individuated in many different ways, it has only three discernable sources: a visual deficit that affects the perception of letters, a phonological deficit that affects the perception of speech sounds, and an audio-visual deficit that disturbs the association of letters with speech sounds. However, the very nature of each of these core deficits remains debatable. The phonological deficit in dyslexia, which is generally attributed to a deficit of phonological awareness, might result from a specific mode of speech perception characterized by the use of allophonic (i.e., subphonemic) units. Here we will summarize the available evidence and present new data in support of the “allophonic theory” of dyslexia. Previous studies have shown that the dyslexia deficit in the categorical perception of phonemic features (e.g., the voicing contrast between /t/ and /d/) is due to the enhanced sensitivity to allophonic features (e.g., the difference between two variants of /d/). Another consequence of allophonic perception is that it should also give rise to an enhanced sensitivity to allophonic segments, such as those that take place within a consonant cluster. This latter prediction is validated by the data presented in this paper.
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spelling pubmed-59243902018-05-03 Enhanced Sensitivity to Subphonemic Segments in Dyslexia: A New Instance of Allophonic Perception Serniclaes, Willy Seck, M’ballo Brain Sci Article Although dyslexia can be individuated in many different ways, it has only three discernable sources: a visual deficit that affects the perception of letters, a phonological deficit that affects the perception of speech sounds, and an audio-visual deficit that disturbs the association of letters with speech sounds. However, the very nature of each of these core deficits remains debatable. The phonological deficit in dyslexia, which is generally attributed to a deficit of phonological awareness, might result from a specific mode of speech perception characterized by the use of allophonic (i.e., subphonemic) units. Here we will summarize the available evidence and present new data in support of the “allophonic theory” of dyslexia. Previous studies have shown that the dyslexia deficit in the categorical perception of phonemic features (e.g., the voicing contrast between /t/ and /d/) is due to the enhanced sensitivity to allophonic features (e.g., the difference between two variants of /d/). Another consequence of allophonic perception is that it should also give rise to an enhanced sensitivity to allophonic segments, such as those that take place within a consonant cluster. This latter prediction is validated by the data presented in this paper. MDPI 2018-03-26 /pmc/articles/PMC5924390/ /pubmed/29587419 http://dx.doi.org/10.3390/brainsci8040054 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Serniclaes, Willy
Seck, M’ballo
Enhanced Sensitivity to Subphonemic Segments in Dyslexia: A New Instance of Allophonic Perception
title Enhanced Sensitivity to Subphonemic Segments in Dyslexia: A New Instance of Allophonic Perception
title_full Enhanced Sensitivity to Subphonemic Segments in Dyslexia: A New Instance of Allophonic Perception
title_fullStr Enhanced Sensitivity to Subphonemic Segments in Dyslexia: A New Instance of Allophonic Perception
title_full_unstemmed Enhanced Sensitivity to Subphonemic Segments in Dyslexia: A New Instance of Allophonic Perception
title_short Enhanced Sensitivity to Subphonemic Segments in Dyslexia: A New Instance of Allophonic Perception
title_sort enhanced sensitivity to subphonemic segments in dyslexia: a new instance of allophonic perception
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5924390/
https://www.ncbi.nlm.nih.gov/pubmed/29587419
http://dx.doi.org/10.3390/brainsci8040054
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