Allophonic perception of VOT contrasts in Spanish children with dyslexia
Abstract Introduction Previous studies have evidenced a different mode of speech perception in dyslexia, characterized by the use of allophonic rather than phonemic units. People with dyslexia perceive phonemic features (such as voicing) less accurately than typical readers, but they perceive alloph...
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| Format: | Article |
| Language: | English |
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Wiley
2021-06-01
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| Series: | Brain and Behavior |
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| Online Access: | https://doi.org/10.1002/brb3.2194 |
| _version_ | 1823940772148281344 |
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| author | Willy Serniclaes Miguel López‐Zamora Soraya Bordoy Juan L.Luque |
| author_facet | Willy Serniclaes Miguel López‐Zamora Soraya Bordoy Juan L.Luque |
| author_sort | Willy Serniclaes |
| collection | DOAJ |
| description | Abstract Introduction Previous studies have evidenced a different mode of speech perception in dyslexia, characterized by the use of allophonic rather than phonemic units. People with dyslexia perceive phonemic features (such as voicing) less accurately than typical readers, but they perceive allophonic features (i.e., language‐independent differences between speech sounds) more accurately. Method In this study, we investigated the perception of voicing contrasts in a sample of 204 Spanish children with or without dyslexia. Identification and discrimination data were collected for synthetic sounds varying along three different voice onset time (VOT) continua (ba/pa, de/te, and di/ti). Empirical data will be contrasted with a mathematical model of allophonic perception building up from neural oscillations and auditory temporal processing. Results Children with dyslexia exhibited a general deficit in categorical precision; that is, they discriminated among phonemically contrastive pairs (around 0‐ms VOT) less accurately than did chronological age controls, irrespective of the stimulus continuum. Children with dyslexia also exhibited a higher sensitivity in the discrimination of allophonic features (around ±30‐ms VOT), but only for the stimulus continuum that was based on a nonlexical contrast (ba/pa). Conclusion Fitting the neural network model to the data collected for this continuum suggests that allophonic perception is due to a deficit in “subharmonic coupling” between high‐frequency oscillations. Relationships with “temporal sampling framework” theory are discussed. |
| first_indexed | 2024-12-17T04:18:18Z |
| format | Article |
| id | doaj.art-ee2f38859d3946218947453e39b265e5 |
| institution | Directory Open Access Journal |
| issn | 2162-3279 |
| language | English |
| last_indexed | 2024-12-17T04:18:18Z |
| publishDate | 2021-06-01 |
| publisher | Wiley |
| record_format | Article |
| series | Brain and Behavior |
| spelling | doaj.art-ee2f38859d3946218947453e39b265e52022-12-21T22:03:59ZengWileyBrain and Behavior2162-32792021-06-01116n/an/a10.1002/brb3.2194Allophonic perception of VOT contrasts in Spanish children with dyslexiaWilly Serniclaes0Miguel López‐Zamora1Soraya Bordoy2Juan L.Luque3Institute of Neuroscience and Cognition CNRS, UMR 8002 Université Sorbonne Paris Cité Paris FranceDepartamento de Psicología Evolutiva y de la Educación Facultad de CC de la Educación Universidad de Granada Granada SpainDepartamento de Psicología Evolutiva y de la Educación Facultad de Psicología y Logopedia Universidad de Málaga Málaga SpainDepartamento de Psicología Evolutiva y de la Educación Facultad de Psicología y Logopedia Universidad de Málaga Málaga SpainAbstract Introduction Previous studies have evidenced a different mode of speech perception in dyslexia, characterized by the use of allophonic rather than phonemic units. People with dyslexia perceive phonemic features (such as voicing) less accurately than typical readers, but they perceive allophonic features (i.e., language‐independent differences between speech sounds) more accurately. Method In this study, we investigated the perception of voicing contrasts in a sample of 204 Spanish children with or without dyslexia. Identification and discrimination data were collected for synthetic sounds varying along three different voice onset time (VOT) continua (ba/pa, de/te, and di/ti). Empirical data will be contrasted with a mathematical model of allophonic perception building up from neural oscillations and auditory temporal processing. Results Children with dyslexia exhibited a general deficit in categorical precision; that is, they discriminated among phonemically contrastive pairs (around 0‐ms VOT) less accurately than did chronological age controls, irrespective of the stimulus continuum. Children with dyslexia also exhibited a higher sensitivity in the discrimination of allophonic features (around ±30‐ms VOT), but only for the stimulus continuum that was based on a nonlexical contrast (ba/pa). Conclusion Fitting the neural network model to the data collected for this continuum suggests that allophonic perception is due to a deficit in “subharmonic coupling” between high‐frequency oscillations. Relationships with “temporal sampling framework” theory are discussed.https://doi.org/10.1002/brb3.2194allophonic perceptioncategorical perceptiondyslexiaSpanishvoice onset time |
| spellingShingle | Willy Serniclaes Miguel López‐Zamora Soraya Bordoy Juan L.Luque Allophonic perception of VOT contrasts in Spanish children with dyslexia Brain and Behavior allophonic perception categorical perception dyslexia Spanish voice onset time |
| title | Allophonic perception of VOT contrasts in Spanish children with dyslexia |
| title_full | Allophonic perception of VOT contrasts in Spanish children with dyslexia |
| title_fullStr | Allophonic perception of VOT contrasts in Spanish children with dyslexia |
| title_full_unstemmed | Allophonic perception of VOT contrasts in Spanish children with dyslexia |
| title_short | Allophonic perception of VOT contrasts in Spanish children with dyslexia |
| title_sort | allophonic perception of vot contrasts in spanish children with dyslexia |
| topic | allophonic perception categorical perception dyslexia Spanish voice onset time |
| url | https://doi.org/10.1002/brb3.2194 |
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