In sync or not in sync? Illusory body ownership in autism spectrum disorder / Silvia GUERRA in Research in Autism Spectrum Disorders, 41-42 (September 2017)  

Public ISBD [article]  inResearch in Autism Spectrum Disorders > 41-42 (September 2017) . - p.1-7 Titre : In sync or not in sync? Illusory body ownership in autism spectrum disorder Type de document : Texte imprimé et/ou numérique Auteurs : Silvia GUERRA, Auteur ; Andrea SPOTO, Auteur ; Valentina PARMA, Auteur ; Elisa STRAULINO, Auteur ; Umberto CASTIELLO, Auteur Article en page(s) : p.1-7 Langues : Anglais (eng) Mots-clés : Autism spectrum disorders  Body ownership  Numbness illusion  Multisensory temporal integration  Tactile sensory processing Index. décimale : PER Périodiques Résumé : A fundamental aspect of self-consciousness is body ownership, which refers to the experience that our body and its parts belong to us and it is distinct from those of other persons. Body ownership depends on the integration of different sensory stimulations and it is crucial for the development of functional motor and social abilities, which are compromised in individuals with autism spectrum disorder (ASD). Here we examined the multisensory nature of body ownership in individuals with ASD by using a procedure based on tactile conflicts, namely the numbness illusion (NI). Method We induced an illusory feeling of numbness and ownership for another person’s finger by asking participants to hold their palm against another person’s palm and to stroke the two joined index fingers with the index and thumb of their other hand. Results As expected, when the agent self-strokes their finger, healthy participants do not perceive the NI if the stroking is performed asynchronously. Conversely, in individuals with ASD the illusion occurred with both synchronous and asynchronous self-stroking. Conclusions We contend that individuals with ASD are more vulnerable than controls to this illusory tactile experience and we discuss the findings in light of impaired perception of the temporal relationships between tactile and proprioceptive inputs. En ligne : https://doi.org/10.1016/j.rasd.2017.07.003 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=321 [article] In sync or not in sync? Illusory body ownership in autism spectrum disorder [Texte imprimé et/ou numérique] / Silvia GUERRA, Auteur ; Andrea SPOTO, Auteur ; Valentina PARMA, Auteur ; Elisa STRAULINO, Auteur ; Umberto CASTIELLO, Auteur . - p.1-7. Langues : Anglais (eng) in Research in Autism Spectrum Disorders > 41-42 (September 2017) . - p.1-7 Mots-clés : Autism spectrum disorders  Body ownership  Numbness illusion  Multisensory temporal integration  Tactile sensory processing Index. décimale : PER Périodiques Résumé : A fundamental aspect of self-consciousness is body ownership, which refers to the experience that our body and its parts belong to us and it is distinct from those of other persons. Body ownership depends on the integration of different sensory stimulations and it is crucial for the development of functional motor and social abilities, which are compromised in individuals with autism spectrum disorder (ASD). Here we examined the multisensory nature of body ownership in individuals with ASD by using a procedure based on tactile conflicts, namely the numbness illusion (NI). Method We induced an illusory feeling of numbness and ownership for another person’s finger by asking participants to hold their palm against another person’s palm and to stroke the two joined index fingers with the index and thumb of their other hand. Results As expected, when the agent self-strokes their finger, healthy participants do not perceive the NI if the stroking is performed asynchronously. Conversely, in individuals with ASD the illusion occurred with both synchronous and asynchronous self-stroking. Conclusions We contend that individuals with ASD are more vulnerable than controls to this illusory tactile experience and we discuss the findings in light of impaired perception of the temporal relationships between tactile and proprioceptive inputs. En ligne : https://doi.org/10.1016/j.rasd.2017.07.003 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=321

Neurobiological Mechanisms of Anxiety in ASD / John D. HERRINGTON  

Public ISBD in Anxiety in Children and Adolescents with Autism Spectrum Disorder / Connor M. KERNS Titre : Neurobiological Mechanisms of Anxiety in ASD Type de document : Texte imprimé et/ou numérique Auteurs : John D. HERRINGTON, Auteur ; Valentina PARMA, Auteur ; Judith S. MILLER, Auteur Année de publication : 2017 Importance : p.55-77 Langues : Anglais (eng) Mots-clés : Amygdala  prefrontal cortex  social intelligence  heart rate variability  electrodermal activity Index. décimale : PAR-B PAR-B - Anxiété Résumé : Abstract Decades of research on the neurobiology of autism spectrum disorder (ASD) have generally overlooked the importance of co-occurring anxiety. This is surprising, as neurobiological accounts of ASD and anxiety disorders point to highly overlapping systems. This chapter describes the overlap between the neurobiology of anxiety and ASD, with a particular emphasis on amygdala function and structure. As we discuss, the successful integration of diverging patterns of amygdala activity in ASD and anxiety represents one of the biggest advances we could make in understanding their co-occurrence. This chapter also reviews the role of prefrontal cortex (PFC) in modulating amygdala function, and how differences in amygdala/PFC connectivity may influence the presentation of anxiety in ASD. Lastly, we review the overlap between anxiety, ASD, and peripheral nervous system function (heart rate, heart rate variability, and electrodermal activity). Key agendas for future research on anxiety in ASD include the validation of new, wireless technology for large-scale investigations of peripheral nervous system function, the increased use of experimental manipulations of anxiety, and an increased reliance on developmental perspectives. En ligne : http://dx.doi.org/10.1016/B978-0-12-805122-1.00004-1 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=300 in Anxiety in Children and Adolescents with Autism Spectrum Disorder / Connor M. KERNS Neurobiological Mechanisms of Anxiety in ASD [Texte imprimé et/ou numérique] / John D. HERRINGTON, Auteur ; Valentina PARMA, Auteur ; Judith S. MILLER, Auteur . - 2017 . - p.55-77. Langues : Anglais (eng) Mots-clés : Amygdala  prefrontal cortex  social intelligence  heart rate variability  electrodermal activity Index. décimale : PAR-B PAR-B - Anxiété Résumé : Abstract Decades of research on the neurobiology of autism spectrum disorder (ASD) have generally overlooked the importance of co-occurring anxiety. This is surprising, as neurobiological accounts of ASD and anxiety disorders point to highly overlapping systems. This chapter describes the overlap between the neurobiology of anxiety and ASD, with a particular emphasis on amygdala function and structure. As we discuss, the successful integration of diverging patterns of amygdala activity in ASD and anxiety represents one of the biggest advances we could make in understanding their co-occurrence. This chapter also reviews the role of prefrontal cortex (PFC) in modulating amygdala function, and how differences in amygdala/PFC connectivity may influence the presentation of anxiety in ASD. Lastly, we review the overlap between anxiety, ASD, and peripheral nervous system function (heart rate, heart rate variability, and electrodermal activity). Key agendas for future research on anxiety in ASD include the validation of new, wireless technology for large-scale investigations of peripheral nervous system function, the increased use of experimental manipulations of anxiety, and an increased reliance on developmental perspectives. En ligne : http://dx.doi.org/10.1016/B978-0-12-805122-1.00004-1 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=300

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