Acoustic Exaggeration Enhances Speech Discrimination in Young Autistic Children / Luodi YU ; Lizhi BAN ; Aiwen Yi ; Jing Xin ; Suping Li ; Suiping WANG ; Laurent MOTTRON in Autism Research, 18-2 (February 2025)  

Public ISBD [article]  inAutism Research > 18-2 (February 2025) . - p.402-414 Titre : Acoustic Exaggeration Enhances Speech Discrimination in Young Autistic Children : Autism Research Type de document : Texte imprimé et/ou numérique Auteurs : Luodi YU, Auteur ; Lizhi BAN, Auteur ; Aiwen Yi, Auteur ; Jing Xin, Auteur ; Suping Li, Auteur ; Suiping WANG, Auteur ; Laurent MOTTRON, Auteur Article en page(s) : p.402-414 Langues : Anglais (eng) Mots-clés : auditory processing autism spectrum disorders EEG multivariate pattern analysis speech processing Index. décimale : PER Périodiques Résumé : ABSTRACT Child-directed speech (CDS), which amplifies acoustic and social features of speech during interactions with young children, promotes typical phonetic and language development. In autism, both behavioral and brain data indicate reduced sensitivity to human speech, which predicts absent, decreased, or atypical benefits of exaggerated speech signals such as CDS. This study investigates the impact of exaggerated fundamental frequency (F0) and voice-onset time on the neural processing of speech sounds in 22 Chinese-speaking autistic children aged 2?7?years old with a history of speech delays, compared with 25 typically developing (TD) peers. Electroencephalography (EEG) data were collected during passive listening to exaggerated and non-exaggerated syllables. A time-resolved multivariate pattern analysis (MVPA) was used to evaluate the potential effects of acoustic exaggeration on syllable discrimination in terms of neural decoding accuracy. For non-exaggerated syllables, neither the autism nor the TD group achieved above-chance decoding accuracy. In contrast, for exaggerated syllables, both groups achieved above-chance decoding, indicating significant syllable discrimination, with no difference in accuracy between the autism and TD groups. However, the temporal generalization patterns in the MVPA results revealed distinct neural mechanisms supporting syllable discrimination between the groups. Although the TD group demonstrated a left-hemisphere advantage for decoding and generalization, the autism group displayed similar decoding patterns between hemispheres. These findings highlight the potential of selective acoustic exaggeration to support speech learning in autistic children, underscoring the importance of tailored, sensory-based interventions. En ligne : https://doi.org/10.1002/aur.3301 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=547 [article] Acoustic Exaggeration Enhances Speech Discrimination in Young Autistic Children : Autism Research [Texte imprimé et/ou numérique] / Luodi YU, Auteur ; Lizhi BAN, Auteur ; Aiwen Yi, Auteur ; Jing Xin, Auteur ; Suping Li, Auteur ; Suiping WANG, Auteur ; Laurent MOTTRON, Auteur . - p.402-414. Langues : Anglais (eng) in Autism Research > 18-2 (February 2025) . - p.402-414 Mots-clés : auditory processing autism spectrum disorders EEG multivariate pattern analysis speech processing Index. décimale : PER Périodiques Résumé : ABSTRACT Child-directed speech (CDS), which amplifies acoustic and social features of speech during interactions with young children, promotes typical phonetic and language development. In autism, both behavioral and brain data indicate reduced sensitivity to human speech, which predicts absent, decreased, or atypical benefits of exaggerated speech signals such as CDS. This study investigates the impact of exaggerated fundamental frequency (F0) and voice-onset time on the neural processing of speech sounds in 22 Chinese-speaking autistic children aged 2?7?years old with a history of speech delays, compared with 25 typically developing (TD) peers. Electroencephalography (EEG) data were collected during passive listening to exaggerated and non-exaggerated syllables. A time-resolved multivariate pattern analysis (MVPA) was used to evaluate the potential effects of acoustic exaggeration on syllable discrimination in terms of neural decoding accuracy. For non-exaggerated syllables, neither the autism nor the TD group achieved above-chance decoding accuracy. In contrast, for exaggerated syllables, both groups achieved above-chance decoding, indicating significant syllable discrimination, with no difference in accuracy between the autism and TD groups. However, the temporal generalization patterns in the MVPA results revealed distinct neural mechanisms supporting syllable discrimination between the groups. Although the TD group demonstrated a left-hemisphere advantage for decoding and generalization, the autism group displayed similar decoding patterns between hemispheres. These findings highlight the potential of selective acoustic exaggeration to support speech learning in autistic children, underscoring the importance of tailored, sensory-based interventions. En ligne : https://doi.org/10.1002/aur.3301 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=547

Adaptive trajectories and early risk factors in the autism spectrum: A 15-year prospective study / Amaria BAGHDADLI in Autism Research, 11-11 (November 2018)  

Public ISBD [article]  inAutism Research > 11-11 (November 2018) . - p.1455-1467 Titre : Adaptive trajectories and early risk factors in the autism spectrum: A 15-year prospective study Type de document : Texte imprimé et/ou numérique Auteurs : Amaria BAGHDADLI, Auteur ; C. MICHELON, Auteur ; E. PERNON, Auteur ; M. C. PICOT, Auteur ; S. MIOT, Auteur ; Sandrine SONIE, Auteur ; C. RATTAZ, Auteur ; Laurent MOTTRON, Auteur Article en page(s) : p.1455-1467 Langues : Anglais (eng) Mots-clés : adaptative level  autism spectrum  developmental trajectories  early adulthood Index. décimale : PER Périodiques Résumé : Little is known about long-term outcomes. We investigate the adaptive trajectories and their risk factors in ASD. Data were obtained from 281 children prospectively followed untill adulthood. The final sample consisted of 106 individuals. Vineland scores were collected at baseline (T1), 3 (T2), 10 (T3), and 15 (T4) years later. A group-based method was used to identify homogeneous patterns of adaptive skills trajectories. Results show that among the children initially categorized as autistic, 82.6% remained over the ADOS diagnostic threshold, 11.9% converted to atypical autism, and 5.4% fell under the ADOS threshold. Most atypical autism diagnoses were unstable. Most (81.7%) autistic participants had an ID at inclusion. At T1, 59.3% were nonverbal, but only 39% at T4. Most changes occurred between 4 and 8 years of age. Approximately 25% of participants exhibited a "high" growth trajectory, in which progress continues throughout adolescence, and 75% a "low" growth trajectory, characterized by greater autistic symptoms, intellectual disability, and lower language abilities reflected by high CARS scores, low apparent DQ, and speech difficulties, which mostly, but not always, predicted low trajectories. Our findings suggest that the adaptive prognosis of autism is mostly poor in this cohort, biased toward intellectual disability. However, changes in diagnostic, speech, and adaptive status are not uncommon, even for indivduals with low measured intelligence or apparent intellectual disability, and are sometimes difficult to predict. Autism Research 2018, 11: 1455-1467. (c) 2018 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: Most autism diagnoses given before 5 years of age are stable to adulthood, but one-fifth of individuals are no longer considered to be autistic, even in a cohort biased toward apparent intellectual disability. Conversely, atypical autism diagnoses are mostly unstable. One-third of children who are nonverbal at 5 years are verbal within 15 years, mostly before 8 years of age. Concerning adaptive behavior outcomes, only one-fourth of children exhibit a high-growth trajectory through at least 15 years. En ligne : http://dx.doi.org/10.1002/aur.2022 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=370 [article] Adaptive trajectories and early risk factors in the autism spectrum: A 15-year prospective study [Texte imprimé et/ou numérique] / Amaria BAGHDADLI, Auteur ; C. MICHELON, Auteur ; E. PERNON, Auteur ; M. C. PICOT, Auteur ; S. MIOT, Auteur ; Sandrine SONIE, Auteur ; C. RATTAZ, Auteur ; Laurent MOTTRON, Auteur . - p.1455-1467. Langues : Anglais (eng) in Autism Research > 11-11 (November 2018) . - p.1455-1467 Mots-clés : adaptative level  autism spectrum  developmental trajectories  early adulthood Index. décimale : PER Périodiques Résumé : Little is known about long-term outcomes. We investigate the adaptive trajectories and their risk factors in ASD. Data were obtained from 281 children prospectively followed untill adulthood. The final sample consisted of 106 individuals. Vineland scores were collected at baseline (T1), 3 (T2), 10 (T3), and 15 (T4) years later. A group-based method was used to identify homogeneous patterns of adaptive skills trajectories. Results show that among the children initially categorized as autistic, 82.6% remained over the ADOS diagnostic threshold, 11.9% converted to atypical autism, and 5.4% fell under the ADOS threshold. Most atypical autism diagnoses were unstable. Most (81.7%) autistic participants had an ID at inclusion. At T1, 59.3% were nonverbal, but only 39% at T4. Most changes occurred between 4 and 8 years of age. Approximately 25% of participants exhibited a "high" growth trajectory, in which progress continues throughout adolescence, and 75% a "low" growth trajectory, characterized by greater autistic symptoms, intellectual disability, and lower language abilities reflected by high CARS scores, low apparent DQ, and speech difficulties, which mostly, but not always, predicted low trajectories. Our findings suggest that the adaptive prognosis of autism is mostly poor in this cohort, biased toward intellectual disability. However, changes in diagnostic, speech, and adaptive status are not uncommon, even for indivduals with low measured intelligence or apparent intellectual disability, and are sometimes difficult to predict. Autism Research 2018, 11: 1455-1467. (c) 2018 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: Most autism diagnoses given before 5 years of age are stable to adulthood, but one-fifth of individuals are no longer considered to be autistic, even in a cohort biased toward apparent intellectual disability. Conversely, atypical autism diagnoses are mostly unstable. One-third of children who are nonverbal at 5 years are verbal within 15 years, mostly before 8 years of age. Concerning adaptive behavior outcomes, only one-fourth of children exhibit a high-growth trajectory through at least 15 years. En ligne : http://dx.doi.org/10.1002/aur.2022 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=370

Applying Developmental Principles to the Study of Autism / Jacob A. BURACK

Public ISBD contenu dans The Research Basis for Autism Intervention / Eric SCHOPLER Titre : Applying Developmental Principles to the Study of Autism Type de document : Texte imprimé et/ou numérique Auteurs : Jacob A. BURACK, Auteur ; Luigi PASTO, Auteur ; Mafalda PORPORINO, Auteur ; Grace IAROCCI, Auteur ; Laurent MOTTRON, Auteur ; Dermot M. BOWLER, Auteur Année de publication : 2001 Importance : p.25-41 Langues : Anglais (eng) Index. décimale : APP-D APP-D - Interventions Educatives - Généralités Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=100 contenu dans The Research Basis for Autism Intervention / Eric SCHOPLER Applying Developmental Principles to the Study of Autism [Texte imprimé et/ou numérique] / Jacob A. BURACK, Auteur ; Luigi PASTO, Auteur ; Mafalda PORPORINO, Auteur ; Grace IAROCCI, Auteur ; Laurent MOTTRON, Auteur ; Dermot M. BOWLER, Auteur . - 2001 . - p.25-41. Langues : Anglais (eng) Index. décimale : APP-D APP-D - Interventions Educatives - Généralités Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=100

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Approche neuropsychologique de l’autisme / Laurent MOTTRON

Public ISBD contenu dans Traité de Neuropsychologie de l'Enfant / Martine PONCELET Titre : Approche neuropsychologique de l’autisme Type de document : Texte imprimé et/ou numérique Auteurs : Laurent MOTTRON, Auteur Année de publication : 2009 Importance : p.641-680 Langues : Français (fre) Index. décimale : SCI-C SCI-C - Neuropsychologie Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=112 contenu dans Traité de Neuropsychologie de l'Enfant / Martine PONCELET Approche neuropsychologique de l’autisme [Texte imprimé et/ou numérique] / Laurent MOTTRON, Auteur . - 2009 . - p.641-680. Langues : Français (fre) Index. décimale : SCI-C SCI-C - Neuropsychologie Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=112

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Are tantrums in autism distinct from those of other childhood conditions? A comparative prevalence and naturalistic study / Alexis BEAUCHAMP-CHÂTEL in Research in Autism Spectrum Disorders, 62 (June 2019)  

Public ISBD [article]  inResearch in Autism Spectrum Disorders > 62 (June 2019) . - p.66-74 Titre : Are tantrums in autism distinct from those of other childhood conditions? A comparative prevalence and naturalistic study Type de document : Texte imprimé et/ou numérique Auteurs : Alexis BEAUCHAMP-CHÂTEL, Auteur ; Valérie COURCHESNE, Auteur ; Baudouin FORGEOT D'ARC, Auteur ; Laurent MOTTRON, Auteur Article en page(s) : p.66-74 Langues : Anglais (eng) Mots-clés : Autism spectrum disorders  Tantrums  Temper tantrums  Behavioral problems  Emotional problems  Preschoolers Index. décimale : PER Périodiques Résumé : Background While autistic temper tantrums during preschool age are a common challenging behavior, it is unknown whether they are qualitatively and quantitatively different from those arising in other neurodevelopmental conditions. Method Tantrum frequency, duration, triggering factors, behavioral components, parental responses and parental perception of their impact on functioning were collected in 48 autistic spectrum (AS) preschoolers and in 47 preschoolers with other neurodevelopmental conditions, aged from 2 to 5 years. Results The AS group had more frequent tantrums with no identifiable triggers, a higher proportion of tantrums triggered by communication problems and in the context of demands, and their parents were more likely to give in to their demands in response to tantrums. No other group differences in terms of frequency, duration, perceived impact, triggers, modulators and behaviors were found. Conclusion This study did not find an increased frequency of tantrums at a preschool age in youth with and without an AS diagnosis. Further research should now consider if autistic tantrums differ from that of typically developing peers. En ligne : https://doi.org/10.1016/j.rasd.2019.03.003 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=389 [article] Are tantrums in autism distinct from those of other childhood conditions? A comparative prevalence and naturalistic study [Texte imprimé et/ou numérique] / Alexis BEAUCHAMP-CHÂTEL, Auteur ; Valérie COURCHESNE, Auteur ; Baudouin FORGEOT D'ARC, Auteur ; Laurent MOTTRON, Auteur . - p.66-74. Langues : Anglais (eng) in Research in Autism Spectrum Disorders > 62 (June 2019) . - p.66-74 Mots-clés : Autism spectrum disorders  Tantrums  Temper tantrums  Behavioral problems  Emotional problems  Preschoolers Index. décimale : PER Périodiques Résumé : Background While autistic temper tantrums during preschool age are a common challenging behavior, it is unknown whether they are qualitatively and quantitatively different from those arising in other neurodevelopmental conditions. Method Tantrum frequency, duration, triggering factors, behavioral components, parental responses and parental perception of their impact on functioning were collected in 48 autistic spectrum (AS) preschoolers and in 47 preschoolers with other neurodevelopmental conditions, aged from 2 to 5 years. Results The AS group had more frequent tantrums with no identifiable triggers, a higher proportion of tantrums triggered by communication problems and in the context of demands, and their parents were more likely to give in to their demands in response to tantrums. No other group differences in terms of frequency, duration, perceived impact, triggers, modulators and behaviors were found. Conclusion This study did not find an increased frequency of tantrums at a preschool age in youth with and without an AS diagnosis. Further research should now consider if autistic tantrums differ from that of typically developing peers. En ligne : https://doi.org/10.1016/j.rasd.2019.03.003 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=389

Asperger et fière de l'être / Alexandra REYNAUD

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Asperger et fière de l'être / Alexandra REYNAUD

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Atypical Categorical Perception in Autism: Autonomy of Discrimination? / Isabelle SOULIERES in Journal of Autism and Developmental Disorders, 37-3 (March 2007)  

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Atypical Face Perception in Autism: A Point of View? / Karine MORIN in Autism Research, 8-5 (October 2015)  

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Auditory Stream Segregation in Autism Spectrum Disorder: Benefits and Downsides of Superior Perceptual Processes / Lucie BOUVET in Journal of Autism and Developmental Disorders, 46-5 (May 2016)  

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L'autisme / Valérie COURCHESNE

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L'autisme, une autre intelligence / Laurent MOTTRON

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L'autisme : une différence plus qu'une maladie / Laurent MOTTRON in Cerveau & Psycho, 51 (Mai-Juin 2012)

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L'autisme en recherche : une différence qui s'estompe ? / Audrey MURRAY in Sésame, 212 (Décembre 2019)

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Autistic preschoolers display reduced attention orientation for competition but intact facilitation from a parallel competitor: Eye-tracking and behavioral data / Luodi YU in Autism, 28-6 (June 2024)  

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