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Defining clusters of young autistic and typically developing children based on loudness-dependent auditory electrophysiological responses / Patrick DWYER in Molecular Autism, 11 (2020)
[article]
Titre : Defining clusters of young autistic and typically developing children based on loudness-dependent auditory electrophysiological responses Type de document : Texte imprimé et/ou numérique Auteurs : Patrick DWYER, Auteur ; Xiaodong WANG, Auteur ; Rosanna DE MEO-MONTEIL, Auteur ; Fushing HSIEH, Auteur ; Clifford D. SARON, Auteur ; Susan M. RIVERA, Auteur Article en page(s) : 48 p. Langues : Anglais (eng) Mots-clés : Autism Event-related potentials (ERPs) Heterogeneity Hierarchical clustering Sensory processing Subgroups study. Index. décimale : PER Périodiques Résumé : BACKGROUND: Autistic individuals exhibit atypical patterns of sensory processing that are known to be related to quality of life, but which are also highly heterogeneous. Previous investigations of this heterogeneity have ordinarily used questionnaires and have rarely investigated sensory processing in typical development (TD) alongside autism spectrum development (ASD). METHODS: The present study used hierarchical clustering in a large sample to identify subgroups of young autistic and typically developing children based on the normalized global field power (GFP) of their event-related potentials (ERPs) to auditory stimuli of four different loudness intensities (50, 60, 70, 80?dB SPL): that is, based on an index of the relative strengths of their neural responses across these loudness conditions. RESULTS: Four clusters of participants were defined. Normalized GFP responses to sounds of different intensities differed strongly across clusters. There was considerable overlap in cluster assignments of autistic and typically developing participants, but autistic participants were more likely to display a pattern of relatively linear increases in response strength accompanied by a disproportionately strong response to 70?dB stimuli. Autistic participants displaying this pattern trended towards obtaining higher scores on assessments of cognitive abilities. There was also a trend for typically developing participants to disproportionately fall into a cluster characterized by disproportionately/nonlinearly strong 60?dB responses. Greater auditory distractibility was reported among autistic participants in a cluster characterized by disproportionately strong responses to the loudest (80?dB) sounds, and furthermore, relatively strong responses to loud sounds were correlated with auditory distractibility. This appears to provide evidence of coinciding behavioral and neural sensory atypicalities. LIMITATIONS: Replication may be needed to verify exploratory results. This analysis does not address variability related to classical ERP latencies and topographies. The sensory questionnaire employed was not specifically designed for use in autism. Hearing acuity was not measured. Variability in sensory responses unrelated to loudness is not addressed, leaving room for additional research. CONCLUSIONS: Taken together, these data demonstrate the broader benefits of using electrophysiology to explore individual differences. They illuminate different neural response patterns and suggest relationships between sensory neural responses and sensory behaviors, cognitive abilities, and autism diagnostic status. En ligne : http://dx.doi.org/10.1186/s13229-020-00352-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=427
in Molecular Autism > 11 (2020) . - 48 p.[article] Defining clusters of young autistic and typically developing children based on loudness-dependent auditory electrophysiological responses [Texte imprimé et/ou numérique] / Patrick DWYER, Auteur ; Xiaodong WANG, Auteur ; Rosanna DE MEO-MONTEIL, Auteur ; Fushing HSIEH, Auteur ; Clifford D. SARON, Auteur ; Susan M. RIVERA, Auteur . - 48 p.
Langues : Anglais (eng)
in Molecular Autism > 11 (2020) . - 48 p.
Mots-clés : Autism Event-related potentials (ERPs) Heterogeneity Hierarchical clustering Sensory processing Subgroups study. Index. décimale : PER Périodiques Résumé : BACKGROUND: Autistic individuals exhibit atypical patterns of sensory processing that are known to be related to quality of life, but which are also highly heterogeneous. Previous investigations of this heterogeneity have ordinarily used questionnaires and have rarely investigated sensory processing in typical development (TD) alongside autism spectrum development (ASD). METHODS: The present study used hierarchical clustering in a large sample to identify subgroups of young autistic and typically developing children based on the normalized global field power (GFP) of their event-related potentials (ERPs) to auditory stimuli of four different loudness intensities (50, 60, 70, 80?dB SPL): that is, based on an index of the relative strengths of their neural responses across these loudness conditions. RESULTS: Four clusters of participants were defined. Normalized GFP responses to sounds of different intensities differed strongly across clusters. There was considerable overlap in cluster assignments of autistic and typically developing participants, but autistic participants were more likely to display a pattern of relatively linear increases in response strength accompanied by a disproportionately strong response to 70?dB stimuli. Autistic participants displaying this pattern trended towards obtaining higher scores on assessments of cognitive abilities. There was also a trend for typically developing participants to disproportionately fall into a cluster characterized by disproportionately/nonlinearly strong 60?dB responses. Greater auditory distractibility was reported among autistic participants in a cluster characterized by disproportionately strong responses to the loudest (80?dB) sounds, and furthermore, relatively strong responses to loud sounds were correlated with auditory distractibility. This appears to provide evidence of coinciding behavioral and neural sensory atypicalities. LIMITATIONS: Replication may be needed to verify exploratory results. This analysis does not address variability related to classical ERP latencies and topographies. The sensory questionnaire employed was not specifically designed for use in autism. Hearing acuity was not measured. Variability in sensory responses unrelated to loudness is not addressed, leaving room for additional research. CONCLUSIONS: Taken together, these data demonstrate the broader benefits of using electrophysiology to explore individual differences. They illuminate different neural response patterns and suggest relationships between sensory neural responses and sensory behaviors, cognitive abilities, and autism diagnostic status. En ligne : http://dx.doi.org/10.1186/s13229-020-00352-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=427 Evaluating Teacher Language Within General and Special Education Classrooms Serving Elementary Students with Autism / Nicole SPARAPANI in Journal of Autism and Developmental Disorders, 52-5 (May 2022)
[article]
Titre : Evaluating Teacher Language Within General and Special Education Classrooms Serving Elementary Students with Autism Type de document : Texte imprimé et/ou numérique Auteurs : Nicole SPARAPANI, Auteur ; Vanessa P. REINHARDT, Auteur ; Jessica L. HOOKER, Auteur ; Lindee MORGAN, Auteur ; Christopher SCHATSCHNEIDER, Auteur ; Amy M. WETHERBY, Auteur Article en page(s) : p.2284-2299 Langues : Anglais (eng) Mots-clés : Autism Spectrum Disorder Autistic Disorder Child Education, Special/methods Humans Language Students Autism Measurement invariance Student characteristics Teacher language Brookes Publishing. She receives royalties from this manual but not from this study. Index. décimale : PER Périodiques Résumé : This study examined how teachers and paraprofessionals in 126 kindergarten-second grade general and special education classrooms talked with their 194 students with autism, and further, how individual student characteristics in language, autism symptoms, and social abilities influenced this talk. Using systematic observational methods and factor analysis, we identified a unidimensional model of teacher language for general and special education classrooms yet observed differences between the settings, with more language observed in special education classrooms-much of which included directives and close-ended questions. Students' receptive vocabulary explained a significant amount of variance in teacher language beyond its shared covariance with social impairment and problem behavior in general education classrooms but was non-significant within special education classrooms. Research implications are discussed. En ligne : http://dx.doi.org/10.1007/s10803-021-05115-4 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=476
in Journal of Autism and Developmental Disorders > 52-5 (May 2022) . - p.2284-2299[article] Evaluating Teacher Language Within General and Special Education Classrooms Serving Elementary Students with Autism [Texte imprimé et/ou numérique] / Nicole SPARAPANI, Auteur ; Vanessa P. REINHARDT, Auteur ; Jessica L. HOOKER, Auteur ; Lindee MORGAN, Auteur ; Christopher SCHATSCHNEIDER, Auteur ; Amy M. WETHERBY, Auteur . - p.2284-2299.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 52-5 (May 2022) . - p.2284-2299
Mots-clés : Autism Spectrum Disorder Autistic Disorder Child Education, Special/methods Humans Language Students Autism Measurement invariance Student characteristics Teacher language Brookes Publishing. She receives royalties from this manual but not from this study. Index. décimale : PER Périodiques Résumé : This study examined how teachers and paraprofessionals in 126 kindergarten-second grade general and special education classrooms talked with their 194 students with autism, and further, how individual student characteristics in language, autism symptoms, and social abilities influenced this talk. Using systematic observational methods and factor analysis, we identified a unidimensional model of teacher language for general and special education classrooms yet observed differences between the settings, with more language observed in special education classrooms-much of which included directives and close-ended questions. Students' receptive vocabulary explained a significant amount of variance in teacher language beyond its shared covariance with social impairment and problem behavior in general education classrooms but was non-significant within special education classrooms. Research implications are discussed. En ligne : http://dx.doi.org/10.1007/s10803-021-05115-4 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=476