Keeping time in the brain: Autism spectrum disorder and audiovisual temporal processing / Ryan A. STEVENSON in Autism Research, 9-7 (July 2016)  

Public ISBD [article]  inAutism Research > 9-7 (July 2016) . - p.720-738 Titre : Keeping time in the brain: Autism spectrum disorder and audiovisual temporal processing Type de document : Texte imprimé et/ou numérique Auteurs : Ryan A. STEVENSON, Auteur ; Magali SEGERS, Auteur ; Susanne FERBER, Auteur ; Morgan D. BARENSE, Auteur ; Stephen M. CAMARATA, Auteur ; Mark T. WALLACE, Auteur Article en page(s) : p.720-738 Langues : Anglais (eng) Mots-clés : low-level perception  cognitive neuroscience  developmental psychology  social cognition Index. décimale : PER Périodiques Résumé : A growing area of interest and relevance in the study of autism spectrum disorder (ASD) focuses on the relationship between multisensory temporal function and the behavioral, perceptual, and cognitive impairments observed in ASD. Atypical sensory processing is becoming increasingly recognized as a core component of autism, with evidence of atypical processing across a number of sensory modalities. These deviations from typical processing underscore the value of interpreting ASD within a multisensory framework. Furthermore, converging evidence illustrates that these differences in audiovisual processing may be specifically related to temporal processing. This review seeks to bridge the connection between temporal processing and audiovisual perception, and to elaborate on emerging data showing differences in audiovisual temporal function in autism. We also discuss the consequence of such changes, the specific impact on the processing of different classes of audiovisual stimuli (e.g. speech vs. nonspeech, etc.), and the presumptive brain processes and networks underlying audiovisual temporal integration. Finally, possible downstream behavioral implications, and possible remediation strategies are outlined. Autism Res 2016, 9: 720–738. © 2015 International Society for Autism Research, Wiley Periodicals, Inc. En ligne : http://dx.doi.org/10.1002/aur.1566 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=292 [article] Keeping time in the brain: Autism spectrum disorder and audiovisual temporal processing [Texte imprimé et/ou numérique] / Ryan A. STEVENSON, Auteur ; Magali SEGERS, Auteur ; Susanne FERBER, Auteur ; Morgan D. BARENSE, Auteur ; Stephen M. CAMARATA, Auteur ; Mark T. WALLACE, Auteur . - p.720-738. Langues : Anglais (eng) in Autism Research > 9-7 (July 2016) . - p.720-738 Mots-clés : low-level perception  cognitive neuroscience  developmental psychology  social cognition Index. décimale : PER Périodiques Résumé : A growing area of interest and relevance in the study of autism spectrum disorder (ASD) focuses on the relationship between multisensory temporal function and the behavioral, perceptual, and cognitive impairments observed in ASD. Atypical sensory processing is becoming increasingly recognized as a core component of autism, with evidence of atypical processing across a number of sensory modalities. These deviations from typical processing underscore the value of interpreting ASD within a multisensory framework. Furthermore, converging evidence illustrates that these differences in audiovisual processing may be specifically related to temporal processing. This review seeks to bridge the connection between temporal processing and audiovisual perception, and to elaborate on emerging data showing differences in audiovisual temporal function in autism. We also discuss the consequence of such changes, the specific impact on the processing of different classes of audiovisual stimuli (e.g. speech vs. nonspeech, etc.), and the presumptive brain processes and networks underlying audiovisual temporal integration. Finally, possible downstream behavioral implications, and possible remediation strategies are outlined. Autism Res 2016, 9: 720–738. © 2015 International Society for Autism Research, Wiley Periodicals, Inc. En ligne : http://dx.doi.org/10.1002/aur.1566 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=292

Linking Anxiety and Insistence on Sameness in Autistic Children: The Role of Sensory Hypersensitivity / Karen R. BLACK in Journal of Autism and Developmental Disorders, 47-8 (August 2017)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 47-8 (August 2017) . - p.2459-2470 Titre : Linking Anxiety and Insistence on Sameness in Autistic Children: The Role of Sensory Hypersensitivity Type de document : Texte imprimé et/ou numérique Auteurs : Karen R. BLACK, Auteur ; Ryan A. STEVENSON, Auteur ; Magali SEGERS, Auteur ; Busiswe L. NCUBE, Auteur ; Sol Z. SUN, Auteur ; Aviva PHILIPP-MULLER, Auteur ; James M. BEBKO, Auteur ; Morgan D. BARENSE, Auteur ; Susanne FERBER, Auteur Article en page(s) : p.2459-2470 Langues : Anglais (eng) Mots-clés : Autism spectrum disorder  Hypersensitivity  Anxiety  Insistence on sameness  Sensory processing Index. décimale : PER Périodiques Résumé : Sensory hypersensitivity and insistence on sameness (I/S) are common, co-occurring features of autism, yet the relationship between them is poorly understood. This study assessed the impact of sensory hypersensitivity on the clinical symptoms of specific phobia, separation anxiety, social anxiety and I/S for autistic and typically developing (TD) children. Parents of 79 children completed questionnaires on their child’s difficulties related to sensory processing, I/S, and anxiety. Results demonstrated that sensory hypersensitivity mediated 67% of the relationship between symptoms of specific phobia and I/S and 57% of the relationship between separation anxiety and I/S. No relationship was observed between sensory hypersensitivity and social anxiety. These mediation effects of sensory hypersensitivity were found only in autistic children, not in TD children. En ligne : https://doi.org/10.1007/s10803-017-3161-x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=314 [article] Linking Anxiety and Insistence on Sameness in Autistic Children: The Role of Sensory Hypersensitivity [Texte imprimé et/ou numérique] / Karen R. BLACK, Auteur ; Ryan A. STEVENSON, Auteur ; Magali SEGERS, Auteur ; Busiswe L. NCUBE, Auteur ; Sol Z. SUN, Auteur ; Aviva PHILIPP-MULLER, Auteur ; James M. BEBKO, Auteur ; Morgan D. BARENSE, Auteur ; Susanne FERBER, Auteur . - p.2459-2470. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 47-8 (August 2017) . - p.2459-2470 Mots-clés : Autism spectrum disorder  Hypersensitivity  Anxiety  Insistence on sameness  Sensory processing Index. décimale : PER Périodiques Résumé : Sensory hypersensitivity and insistence on sameness (I/S) are common, co-occurring features of autism, yet the relationship between them is poorly understood. This study assessed the impact of sensory hypersensitivity on the clinical symptoms of specific phobia, separation anxiety, social anxiety and I/S for autistic and typically developing (TD) children. Parents of 79 children completed questionnaires on their child’s difficulties related to sensory processing, I/S, and anxiety. Results demonstrated that sensory hypersensitivity mediated 67% of the relationship between symptoms of specific phobia and I/S and 57% of the relationship between separation anxiety and I/S. No relationship was observed between sensory hypersensitivity and social anxiety. These mediation effects of sensory hypersensitivity were found only in autistic children, not in TD children. En ligne : https://doi.org/10.1007/s10803-017-3161-x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=314

Multisensory speech perception in autism spectrum disorder: From phoneme to whole-word perception / Ryan A. STEVENSON in Autism Research, 10-7 (July 2017)  

Public ISBD [article]  inAutism Research > 10-7 (July 2017) . - p.1280-1290 Titre : Multisensory speech perception in autism spectrum disorder: From phoneme to whole-word perception Type de document : Texte imprimé et/ou numérique Auteurs : Ryan A. STEVENSON, Auteur ; Sarah H. BAUM, Auteur ; Magali SEGERS, Auteur ; Susanne FERBER, Auteur ; Morgan D. BARENSE, Auteur ; Mark T. WALLACE, Auteur Article en page(s) : p.1280-1290 Langues : Anglais (eng) Mots-clés : autism spectrum disorders  speech perception  multisensory integration  inverse effectiveness  sensory integration  sensory processing Index. décimale : PER Périodiques Résumé : Speech perception in noisy environments is boosted when a listener can see the speaker's mouth and integrate the auditory and visual speech information. Autistic children have a diminished capacity to integrate sensory information across modalities, which contributes to core symptoms of autism, such as impairments in social communication. We investigated the abilities of autistic and typically-developing (TD) children to integrate auditory and visual speech stimuli in various signal-to-noise ratios (SNR). Measurements of both whole-word and phoneme recognition were recorded. At the level of whole-word recognition, autistic children exhibited reduced performance in both the auditory and audiovisual modalities. Importantly, autistic children showed reduced behavioral benefit from multisensory integration with whole-word recognition, specifically at low SNRs. At the level of phoneme recognition, autistic children exhibited reduced performance relative to their TD peers in auditory, visual, and audiovisual modalities. However, and in contrast to their performance at the level of whole-word recognition, both autistic and TD children showed benefits from multisensory integration for phoneme recognition. In accordance with the principle of inverse effectiveness, both groups exhibited greater benefit at low SNRs relative to high SNRs. Thus, while autistic children showed typical multisensory benefits during phoneme recognition, these benefits did not translate to typical multisensory benefit of whole-word recognition in noisy environments. We hypothesize that sensory impairments in autistic children raise the SNR threshold needed to extract meaningful information from a given sensory input, resulting in subsequent failure to exhibit behavioral benefits from additional sensory information at the level of whole-word recognition. En ligne : http://dx.doi.org/10.1002/aur.1776 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=309 [article] Multisensory speech perception in autism spectrum disorder: From phoneme to whole-word perception [Texte imprimé et/ou numérique] / Ryan A. STEVENSON, Auteur ; Sarah H. BAUM, Auteur ; Magali SEGERS, Auteur ; Susanne FERBER, Auteur ; Morgan D. BARENSE, Auteur ; Mark T. WALLACE, Auteur . - p.1280-1290. Langues : Anglais (eng) in Autism Research > 10-7 (July 2017) . - p.1280-1290 Mots-clés : autism spectrum disorders  speech perception  multisensory integration  inverse effectiveness  sensory integration  sensory processing Index. décimale : PER Périodiques Résumé : Speech perception in noisy environments is boosted when a listener can see the speaker's mouth and integrate the auditory and visual speech information. Autistic children have a diminished capacity to integrate sensory information across modalities, which contributes to core symptoms of autism, such as impairments in social communication. We investigated the abilities of autistic and typically-developing (TD) children to integrate auditory and visual speech stimuli in various signal-to-noise ratios (SNR). Measurements of both whole-word and phoneme recognition were recorded. At the level of whole-word recognition, autistic children exhibited reduced performance in both the auditory and audiovisual modalities. Importantly, autistic children showed reduced behavioral benefit from multisensory integration with whole-word recognition, specifically at low SNRs. At the level of phoneme recognition, autistic children exhibited reduced performance relative to their TD peers in auditory, visual, and audiovisual modalities. However, and in contrast to their performance at the level of whole-word recognition, both autistic and TD children showed benefits from multisensory integration for phoneme recognition. In accordance with the principle of inverse effectiveness, both groups exhibited greater benefit at low SNRs relative to high SNRs. Thus, while autistic children showed typical multisensory benefits during phoneme recognition, these benefits did not translate to typical multisensory benefit of whole-word recognition in noisy environments. We hypothesize that sensory impairments in autistic children raise the SNR threshold needed to extract meaningful information from a given sensory input, resulting in subsequent failure to exhibit behavioral benefits from additional sensory information at the level of whole-word recognition. En ligne : http://dx.doi.org/10.1002/aur.1776 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=309

What Do We Know About Suicidality in Autism Spectrum Disorders? A Systematic Review / Magali SEGERS in Autism Research, 7-4 (August 2014)  

Public ISBD [article]  inAutism Research > 7-4 (August 2014) . - p.507-521 Titre : What Do We Know About Suicidality in Autism Spectrum Disorders? A Systematic Review Type de document : Texte imprimé et/ou numérique Auteurs : Magali SEGERS, Auteur ; Jennine RAWANA, Auteur Année de publication : 2014 Article en page(s) : p.507-521 Langues : Anglais (eng) Mots-clés : autism spectrum disorders  suicide  suicidality  prevalence  risk factors  protective factors Index. décimale : PER Périodiques Résumé : Suicidality is a common and concerning issue across development, and there is a plethora of research on this topic among typically developing children and youth. Very little is known, however, about the nature of suicidality among individuals with autism spectrum disorders (ASDs). The purpose of the current study was to undertake a systematic literature review to assess the current state of the research literature to examine the prevalence of suicidality among individuals with ASD, related demographic and clinical profiles, and associated risk and protective factors. A literature search using key terms related to suicidality and ASD yielded 10 topical studies that were evaluated for the study objectives. Suicidality was present in 10.9–50% of the ASD samples identified in the systematic review. Further, several large-scale studies found that individuals with ASD comprised 7.3–15% of suicidal populations, a substantial subgroup. Risk factors were identified and included peer victimization, behavioral problems, being Black or Hispanic, being male, lower socioeconomic status, and lower level of education. Only one study reported on protective factors, and this is identified as a significant gap in the literature. Several methodological weaknesses were present in the current literature, such as lack of appropriate comparison groups and little to no use of empirically validated measures for ASD diagnosis and suicide assessment. Additional research is necessary to understand better how this unique population experiences and expresses suicidal tendencies. Recommendations for future research are discussed. En ligne : http://dx.doi.org/10.1002/aur.1375 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=238 [article] What Do We Know About Suicidality in Autism Spectrum Disorders? A Systematic Review [Texte imprimé et/ou numérique] / Magali SEGERS, Auteur ; Jennine RAWANA, Auteur . - 2014 . - p.507-521. Langues : Anglais (eng) in Autism Research > 7-4 (August 2014) . - p.507-521 Mots-clés : autism spectrum disorders  suicide  suicidality  prevalence  risk factors  protective factors Index. décimale : PER Périodiques Résumé : Suicidality is a common and concerning issue across development, and there is a plethora of research on this topic among typically developing children and youth. Very little is known, however, about the nature of suicidality among individuals with autism spectrum disorders (ASDs). The purpose of the current study was to undertake a systematic literature review to assess the current state of the research literature to examine the prevalence of suicidality among individuals with ASD, related demographic and clinical profiles, and associated risk and protective factors. A literature search using key terms related to suicidality and ASD yielded 10 topical studies that were evaluated for the study objectives. Suicidality was present in 10.9–50% of the ASD samples identified in the systematic review. Further, several large-scale studies found that individuals with ASD comprised 7.3–15% of suicidal populations, a substantial subgroup. Risk factors were identified and included peer victimization, behavioral problems, being Black or Hispanic, being male, lower socioeconomic status, and lower level of education. Only one study reported on protective factors, and this is identified as a significant gap in the literature. Several methodological weaknesses were present in the current literature, such as lack of appropriate comparison groups and little to no use of empirically validated measures for ASD diagnosis and suicide assessment. Additional research is necessary to understand better how this unique population experiences and expresses suicidal tendencies. Recommendations for future research are discussed. En ligne : http://dx.doi.org/10.1002/aur.1375 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=238

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