Brief Report: Arrested Development of Audiovisual Speech Perception in Autism Spectrum Disorders / Ryan A. STEVENSON in Journal of Autism and Developmental Disorders, 44-6 (June 2014)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 44-6 (June 2014) . - p.1470-1477 Titre : Brief Report: Arrested Development of Audiovisual Speech Perception in Autism Spectrum Disorders Type de document : Texte imprimé et/ou numérique Auteurs : Ryan A. STEVENSON, Auteur ; Justin K. SIEMANN, Auteur ; Tiffany G. WOYNAROSKI, Auteur ; Brittany C. SCHNEIDER, Auteur ; Haley E. EBERLY, Auteur ; Stephen M. CAMARATA, Auteur ; Mark T. WALLACE, Auteur Article en page(s) : p.1470-1477 Langues : Anglais (eng) Mots-clés : Autism  Sensory processing  Multisensory integration  Speech perception  Audiovisual  McGurk effect Index. décimale : PER Périodiques Résumé : Atypical communicative abilities are a core marker of Autism Spectrum Disorders (ASD). A number of studies have shown that, in addition to auditory comprehension differences, individuals with autism frequently show atypical responses to audiovisual speech, suggesting a multisensory contribution to these communicative differences from their typically developing peers. To shed light on possible differences in the maturation of audiovisual speech integration, we tested younger (ages 6–12) and older (ages 13–18) children with and without ASD on a task indexing such multisensory integration. To do this, we used the McGurk effect, in which the pairing of incongruent auditory and visual speech tokens typically results in the perception of a fused percept distinct from the auditory and visual signals, indicative of active integration of the two channels conveying speech information. Whereas little difference was seen in audiovisual speech processing (i.e., reports of McGurk fusion) between the younger ASD and TD groups, there was a significant difference at the older ages. While TD controls exhibited an increased rate of fusion (i.e., integration) with age, children with ASD failed to show this increase. These data suggest arrested development of audiovisual speech integration in ASD. The results are discussed in light of the extant literature and necessary next steps in research. En ligne : http://dx.doi.org/10.1007/s10803-013-1992-7 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=233 [article] Brief Report: Arrested Development of Audiovisual Speech Perception in Autism Spectrum Disorders [Texte imprimé et/ou numérique] / Ryan A. STEVENSON, Auteur ; Justin K. SIEMANN, Auteur ; Tiffany G. WOYNAROSKI, Auteur ; Brittany C. SCHNEIDER, Auteur ; Haley E. EBERLY, Auteur ; Stephen M. CAMARATA, Auteur ; Mark T. WALLACE, Auteur . - p.1470-1477. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 44-6 (June 2014) . - p.1470-1477 Mots-clés : Autism  Sensory processing  Multisensory integration  Speech perception  Audiovisual  McGurk effect Index. décimale : PER Périodiques Résumé : Atypical communicative abilities are a core marker of Autism Spectrum Disorders (ASD). A number of studies have shown that, in addition to auditory comprehension differences, individuals with autism frequently show atypical responses to audiovisual speech, suggesting a multisensory contribution to these communicative differences from their typically developing peers. To shed light on possible differences in the maturation of audiovisual speech integration, we tested younger (ages 6–12) and older (ages 13–18) children with and without ASD on a task indexing such multisensory integration. To do this, we used the McGurk effect, in which the pairing of incongruent auditory and visual speech tokens typically results in the perception of a fused percept distinct from the auditory and visual signals, indicative of active integration of the two channels conveying speech information. Whereas little difference was seen in audiovisual speech processing (i.e., reports of McGurk fusion) between the younger ASD and TD groups, there was a significant difference at the older ages. While TD controls exhibited an increased rate of fusion (i.e., integration) with age, children with ASD failed to show this increase. These data suggest arrested development of audiovisual speech integration in ASD. The results are discussed in light of the extant literature and necessary next steps in research. En ligne : http://dx.doi.org/10.1007/s10803-013-1992-7 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=233

Evidence for Diminished Multisensory Integration in Autism Spectrum Disorders / Ryan A. STEVENSON in Journal of Autism and Developmental Disorders, 44-12 (December 2014)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 44-12 (December 2014) . - p.3161-3167 Titre : Evidence for Diminished Multisensory Integration in Autism Spectrum Disorders Type de document : Texte imprimé et/ou numérique Auteurs : Ryan A. STEVENSON, Auteur ; Justin K. SIEMANN, Auteur ; Tiffany G. WOYNAROSKI, Auteur ; Brittany C. SCHNEIDER, Auteur ; Haley E. EBERLY, Auteur ; Stephen M. CAMARATA, Auteur ; Mark T. WALLACE, Auteur Article en page(s) : p.3161-3167 Langues : Anglais (eng) Mots-clés : Autism spectrum disorders  Sensory processing  Audiovisual  Multisensory integration  Audition  Vision Index. décimale : PER Périodiques Résumé : Individuals with autism spectrum disorders (ASD) exhibit alterations in sensory processing, including changes in the integration of information across the different sensory modalities. In the current study, we used the sound-induced flash illusion to assess multisensory integration in children with ASD and typically-developing (TD) controls. Thirty-one children with ASD and 31 age and IQ matched TD children (average age = 12 years) were presented with simple visual (i.e., flash) and auditory (i.e., beep) stimuli of varying number. In illusory conditions, a single flash was presented with 2–4 beeps. In TD children, these conditions generally result in the perception of multiple flashes, implying a perceptual fusion across vision and audition. In the present study, children with ASD were significantly less likely to perceive the illusion relative to TD controls, suggesting that multisensory integration and cross-modal binding may be weaker in some children with ASD. These results are discussed in the context of previous findings for multisensory integration in ASD and future directions for research. En ligne : http://dx.doi.org/10.1007/s10803-014-2179-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=243 [article] Evidence for Diminished Multisensory Integration in Autism Spectrum Disorders [Texte imprimé et/ou numérique] / Ryan A. STEVENSON, Auteur ; Justin K. SIEMANN, Auteur ; Tiffany G. WOYNAROSKI, Auteur ; Brittany C. SCHNEIDER, Auteur ; Haley E. EBERLY, Auteur ; Stephen M. CAMARATA, Auteur ; Mark T. WALLACE, Auteur . - p.3161-3167. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 44-12 (December 2014) . - p.3161-3167 Mots-clés : Autism spectrum disorders  Sensory processing  Audiovisual  Multisensory integration  Audition  Vision Index. décimale : PER Périodiques Résumé : Individuals with autism spectrum disorders (ASD) exhibit alterations in sensory processing, including changes in the integration of information across the different sensory modalities. In the current study, we used the sound-induced flash illusion to assess multisensory integration in children with ASD and typically-developing (TD) controls. Thirty-one children with ASD and 31 age and IQ matched TD children (average age = 12 years) were presented with simple visual (i.e., flash) and auditory (i.e., beep) stimuli of varying number. In illusory conditions, a single flash was presented with 2–4 beeps. In TD children, these conditions generally result in the perception of multiple flashes, implying a perceptual fusion across vision and audition. In the present study, children with ASD were significantly less likely to perceive the illusion relative to TD controls, suggesting that multisensory integration and cross-modal binding may be weaker in some children with ASD. These results are discussed in the context of previous findings for multisensory integration in ASD and future directions for research. En ligne : http://dx.doi.org/10.1007/s10803-014-2179-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=243

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