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Preservation of categorical perception for speech in autism with and without speech onset delay / L. CHIODO in Autism Research, 12-11 (November 2019)
[article]
Titre : Preservation of categorical perception for speech in autism with and without speech onset delay Type de document : Texte imprimé et/ou numérique Auteurs : L. CHIODO, Auteur ; Laurent MOTTRON, Auteur ; S. MAJERUS, Auteur Article en page(s) : p.1609-1622 Langues : Anglais (eng) Mots-clés : Bayesian models autism spectrum categorical perception cognition speech onset delay Index. décimale : PER Périodiques Résumé : Recent accounts of autistic perception, including Bayesian accounts, hypothesize a reduced influence of prior knowledge on perception across different domains in the autism spectrum (AS). The purpose of this study was to investigate the influence of prior linguistic knowledge, in the form of phonemic categorical knowledge, on speech perception in adults with AS condition. As phonemic categorical knowledge is shaped by language experience and abilities, we furthermore distinguished AS participants with (AS-SOD) or without a history of speech onset delay (AS-noSOD); the control group comprises typical individuals matched for age, nonverbal intelligence, and reading abilities. We also controlled for the influence of auditory-verbal short-term retention capacities by administering word list and nonword list repetition tasks. We did not observe any reduced influence of prior phonemic knowledge on the perception of speech stimuli nor did we observed any increased perceptual abilities for atypical variants of speech stimuli or nonspeech auditory stimuli, either between the two autistic groups or relative to the control group. Short-term memory abilities appeared to be superior in the AS-noSOD group relative to the AS-SOD and control groups, but this strength could be accounted for by their higher vocabulary knowledge. The preservation of categorical perception in verbal autistic adults observed in this study challenges models claiming a reduced influence of prior knowledge on perception across domains in the AS. Autism Res 2019. (c) 2019 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: A reduced influence of prior knowledge has been considered to characterize perceptual abilities in people with autism. In this article, we examine this claim by assessing nonlinguistic and linguistic auditory perception abilities in adults with autism, and by further distinguishing between autism with or without a history of delayed language development. We did not observe any reduced influence of prior language knowledge on the perception of speech stimuli nor did we observe any increased perceptual abilities for atypical variants of speech stimuli or nonspeech auditory stimuli, and this relative to a control group matched on age, nonverbal intellectual efficiency, and reading abilities. Our results challenge models claiming a reduced influence of prior knowledge on perception across domains in the AS. En ligne : http://dx.doi.org/10.1002/aur.2134 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=411
in Autism Research > 12-11 (November 2019) . - p.1609-1622[article] Preservation of categorical perception for speech in autism with and without speech onset delay [Texte imprimé et/ou numérique] / L. CHIODO, Auteur ; Laurent MOTTRON, Auteur ; S. MAJERUS, Auteur . - p.1609-1622.
Langues : Anglais (eng)
in Autism Research > 12-11 (November 2019) . - p.1609-1622
Mots-clés : Bayesian models autism spectrum categorical perception cognition speech onset delay Index. décimale : PER Périodiques Résumé : Recent accounts of autistic perception, including Bayesian accounts, hypothesize a reduced influence of prior knowledge on perception across different domains in the autism spectrum (AS). The purpose of this study was to investigate the influence of prior linguistic knowledge, in the form of phonemic categorical knowledge, on speech perception in adults with AS condition. As phonemic categorical knowledge is shaped by language experience and abilities, we furthermore distinguished AS participants with (AS-SOD) or without a history of speech onset delay (AS-noSOD); the control group comprises typical individuals matched for age, nonverbal intelligence, and reading abilities. We also controlled for the influence of auditory-verbal short-term retention capacities by administering word list and nonword list repetition tasks. We did not observe any reduced influence of prior phonemic knowledge on the perception of speech stimuli nor did we observed any increased perceptual abilities for atypical variants of speech stimuli or nonspeech auditory stimuli, either between the two autistic groups or relative to the control group. Short-term memory abilities appeared to be superior in the AS-noSOD group relative to the AS-SOD and control groups, but this strength could be accounted for by their higher vocabulary knowledge. The preservation of categorical perception in verbal autistic adults observed in this study challenges models claiming a reduced influence of prior knowledge on perception across domains in the AS. Autism Res 2019. (c) 2019 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: A reduced influence of prior knowledge has been considered to characterize perceptual abilities in people with autism. In this article, we examine this claim by assessing nonlinguistic and linguistic auditory perception abilities in adults with autism, and by further distinguishing between autism with or without a history of delayed language development. We did not observe any reduced influence of prior language knowledge on the perception of speech stimuli nor did we observe any increased perceptual abilities for atypical variants of speech stimuli or nonspeech auditory stimuli, and this relative to a control group matched on age, nonverbal intellectual efficiency, and reading abilities. Our results challenge models claiming a reduced influence of prior knowledge on perception across domains in the AS. En ligne : http://dx.doi.org/10.1002/aur.2134 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=411 Universality of categorical perception deficit in developmental dyslexia: an investigation of Mandarin Chinese tones / Yajing ZHANG in Journal of Child Psychology and Psychiatry, 53-8 (August 2012)
[article]
Titre : Universality of categorical perception deficit in developmental dyslexia: an investigation of Mandarin Chinese tones Type de document : Texte imprimé et/ou numérique Auteurs : Yajing ZHANG, Auteur ; Linjun ZHANG, Auteur ; Hua SHU, Auteur ; Jie XI, Auteur ; Han WU, Auteur ; Yang ZHANG, Auteur ; Ping LI, Auteur Année de publication : 2012 Article en page(s) : p.874-882 Langues : Anglais (eng) Mots-clés : Dyslexia categorical perception lexical tones event-related potential mismatch negativity Index. décimale : PER Périodiques Résumé : Background: While previous studies have shown that children affected by dyslexia exhibit a deficit in categorical perception of segmental features in alphabetic languages, it remains unclear whether the categorical perception deficit generalizes to nonalphabetic languages at the suprasegmental level. In this study, we investigated the occurrence of categorical perception deficit in Mandarin lexical tones in Chinese children with dyslexia. Methods: Both behavioral and electrophysiological measures were taken to compare Chinese dyslexic children with age-matched controls. Auditory event-related potentials were collected with a passive listening oddball paradigm. Results: Behavioral data showed that dyslexic children perceived lexical tone contrasts less categorically and less precisely than age-matched controls. Consistent with the behavioral data, the across-category tone contrast elicited larger mismatch negativity than the within-category distinction in the left hemisphere for the age-matched controls but not for the dyslexic children. Conclusion: The behavioral and electrophysiological results demonstrate impaired categorical perception of lexical tones in Chinese children with dyslexia. Our findings support the hypothesis that children affected by dyslexia have a general deficit in categorical perception of speech, which generalizes to nonalphabetic languages at the suprasegmental level. En ligne : http://dx.doi.org/10.1111/j.1469-7610.2012.02528.x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=177
in Journal of Child Psychology and Psychiatry > 53-8 (August 2012) . - p.874-882[article] Universality of categorical perception deficit in developmental dyslexia: an investigation of Mandarin Chinese tones [Texte imprimé et/ou numérique] / Yajing ZHANG, Auteur ; Linjun ZHANG, Auteur ; Hua SHU, Auteur ; Jie XI, Auteur ; Han WU, Auteur ; Yang ZHANG, Auteur ; Ping LI, Auteur . - 2012 . - p.874-882.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 53-8 (August 2012) . - p.874-882
Mots-clés : Dyslexia categorical perception lexical tones event-related potential mismatch negativity Index. décimale : PER Périodiques Résumé : Background: While previous studies have shown that children affected by dyslexia exhibit a deficit in categorical perception of segmental features in alphabetic languages, it remains unclear whether the categorical perception deficit generalizes to nonalphabetic languages at the suprasegmental level. In this study, we investigated the occurrence of categorical perception deficit in Mandarin lexical tones in Chinese children with dyslexia. Methods: Both behavioral and electrophysiological measures were taken to compare Chinese dyslexic children with age-matched controls. Auditory event-related potentials were collected with a passive listening oddball paradigm. Results: Behavioral data showed that dyslexic children perceived lexical tone contrasts less categorically and less precisely than age-matched controls. Consistent with the behavioral data, the across-category tone contrast elicited larger mismatch negativity than the within-category distinction in the left hemisphere for the age-matched controls but not for the dyslexic children. Conclusion: The behavioral and electrophysiological results demonstrate impaired categorical perception of lexical tones in Chinese children with dyslexia. Our findings support the hypothesis that children affected by dyslexia have a general deficit in categorical perception of speech, which generalizes to nonalphabetic languages at the suprasegmental level. En ligne : http://dx.doi.org/10.1111/j.1469-7610.2012.02528.x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=177