Atypical autonomic nervous system complexity accompanies social cognition task performance in ASD / Hamidreza SAGHIR in Research in Autism Spectrum Disorders, 39 (July 2017)  

Public ISBD [article]  inResearch in Autism Spectrum Disorders > 39 (July 2017) . - p.54-62 Titre : Atypical autonomic nervous system complexity accompanies social cognition task performance in ASD Type de document : Texte imprimé et/ou numérique Auteurs : Hamidreza SAGHIR, Auteur ; Annie DUPUIS, Auteur ; Tom CHAU, Auteur ; Azadeh KUSHKI, Auteur Article en page(s) : p.54-62 Langues : Anglais (eng) Mots-clés : Autism spectrum disorder  Autonomic nervous system  Complexity analysis  Social cognition  RMET  Theory of mind  ASD in children Index. décimale : PER Périodiques Résumé : AbstractBackground Emerging evidence suggests that autonomic nervous system (ANS) function is affected in ASD. Existing literature has focused on quantifying the activity of ANS components (i.e. sympathetic/parasympathetic systems) individually. To this end, measures such as respiratory sinus arrhythmia (RSA) and high- and low-frequency spectral components of heart rate variability have been employed. Recent findings indicate that these methods employ assumptions that do not fully consider the complexity of the ANS system and the interaction of its components. To this end, we propose a new method for examining ANS function in ASD. Methods A sample of typically developing (TD) children (n = 34) and children with ASD (n = 45) performed the Reading the Mind in the Eyes Task (RMET), preceded and followed by periods of baseline movie-watching. Multiscale Entropy (MSE) was employed as a new tool to examine the complexity of the cardiac signal. Results Significant group differences in MSE emerged to suggest atypicality in the regularity of the autonomic signal at short and long time scales in the ASD group during the RMET task. Conclusions For the RMET task, our results may suggest atypical activation of parasympathetic influences on the heart, which contributes to short-term patterns in the heartbeat signal, as well as atypicalities in the slower acting processes. Results also suggest that the coupling between the fast-acting and slow-acting influences may be atypical in ASD during the examined social cognition task. En ligne : https://doi.org/10.1016/j.rasd.2017.04.004 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=308 [article] Atypical autonomic nervous system complexity accompanies social cognition task performance in ASD [Texte imprimé et/ou numérique] / Hamidreza SAGHIR, Auteur ; Annie DUPUIS, Auteur ; Tom CHAU, Auteur ; Azadeh KUSHKI, Auteur . - p.54-62. Langues : Anglais (eng) in Research in Autism Spectrum Disorders > 39 (July 2017) . - p.54-62 Mots-clés : Autism spectrum disorder  Autonomic nervous system  Complexity analysis  Social cognition  RMET  Theory of mind  ASD in children Index. décimale : PER Périodiques Résumé : AbstractBackground Emerging evidence suggests that autonomic nervous system (ANS) function is affected in ASD. Existing literature has focused on quantifying the activity of ANS components (i.e. sympathetic/parasympathetic systems) individually. To this end, measures such as respiratory sinus arrhythmia (RSA) and high- and low-frequency spectral components of heart rate variability have been employed. Recent findings indicate that these methods employ assumptions that do not fully consider the complexity of the ANS system and the interaction of its components. To this end, we propose a new method for examining ANS function in ASD. Methods A sample of typically developing (TD) children (n = 34) and children with ASD (n = 45) performed the Reading the Mind in the Eyes Task (RMET), preceded and followed by periods of baseline movie-watching. Multiscale Entropy (MSE) was employed as a new tool to examine the complexity of the cardiac signal. Results Significant group differences in MSE emerged to suggest atypicality in the regularity of the autonomic signal at short and long time scales in the ASD group during the RMET task. Conclusions For the RMET task, our results may suggest atypical activation of parasympathetic influences on the heart, which contributes to short-term patterns in the heartbeat signal, as well as atypicalities in the slower acting processes. Results also suggest that the coupling between the fast-acting and slow-acting influences may be atypical in ASD during the examined social cognition task. En ligne : https://doi.org/10.1016/j.rasd.2017.04.004 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=308

Erratum to: Handwriting Difficulties in Children with Autism Spectrum Disorders: A Scoping Review / Azadeh KUSHKI in Journal of Autism and Developmental Disorders, 41-12 (December 2011)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 41-12 (December 2011) . - p.1717 Titre : Erratum to: Handwriting Difficulties in Children with Autism Spectrum Disorders: A Scoping Review Type de document : Texte imprimé et/ou numérique Auteurs : Azadeh KUSHKI, Auteur ; Tom CHAU, Auteur ; Evdokia ANAGNOSTOU, Auteur Année de publication : 2011 Article en page(s) : p.1717 Langues : Anglais (eng) Index. décimale : PER Périodiques En ligne : http://dx.doi.org/10.1007/s10803-011-1335-5 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=148 [article] Erratum to: Handwriting Difficulties in Children with Autism Spectrum Disorders: A Scoping Review [Texte imprimé et/ou numérique] / Azadeh KUSHKI, Auteur ; Tom CHAU, Auteur ; Evdokia ANAGNOSTOU, Auteur . - 2011 . - p.1717. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 41-12 (December 2011) . - p.1717 Index. décimale : PER Périodiques En ligne : http://dx.doi.org/10.1007/s10803-011-1335-5 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=148

Handwriting Difficulties in Children with Autism Spectrum Disorders: A Scoping Review / Azadeh KUSHKI in Journal of Autism and Developmental Disorders, 41-12 (December 2011)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 41-12 (December 2011) . - 1706-1716 Titre : Handwriting Difficulties in Children with Autism Spectrum Disorders: A Scoping Review Type de document : Texte imprimé et/ou numérique Auteurs : Azadeh KUSHKI, Auteur ; Tom CHAU, Auteur ; Evdokia ANAGNOSTOU, Auteur Année de publication : 2011 Article en page(s) : 1706-1716 Langues : Anglais (eng) Mots-clés : Handwriting  Autism  Fine motor control  Visual perception  Visual-motor integration  Kinesthesia Index. décimale : PER Périodiques Résumé : Functional handwriting involves complex interactions among physical, cognitive and sensory systems. Impairments in many aspects of these systems are associated with Autism spectrum disorders (ASD), suggesting a heightened risk of handwriting difficulties in children with ASD. This scoping review aimed to: (1) survey the existing evidence about potential contributions to compromised handwriting function in children with ASD, and (2) map out the existing studies documenting handwriting difficulties in children with ASD. The current evidence implicates impairments in fine motor control and visual-motor integration as likely contributors to handwriting difficulties in children with ASD, though the role of the latter is not well-understood. Moreover, diminished overall legibility and compromised letter formation are emerging points of convergence among existing studies of handwriting quality in children with ASD. En ligne : http://dx.doi.org/10.1007/s10803-011-1206-0 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=148 [article] Handwriting Difficulties in Children with Autism Spectrum Disorders: A Scoping Review [Texte imprimé et/ou numérique] / Azadeh KUSHKI, Auteur ; Tom CHAU, Auteur ; Evdokia ANAGNOSTOU, Auteur . - 2011 . - 1706-1716. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 41-12 (December 2011) . - 1706-1716 Mots-clés : Handwriting  Autism  Fine motor control  Visual perception  Visual-motor integration  Kinesthesia Index. décimale : PER Périodiques Résumé : Functional handwriting involves complex interactions among physical, cognitive and sensory systems. Impairments in many aspects of these systems are associated with Autism spectrum disorders (ASD), suggesting a heightened risk of handwriting difficulties in children with ASD. This scoping review aimed to: (1) survey the existing evidence about potential contributions to compromised handwriting function in children with ASD, and (2) map out the existing studies documenting handwriting difficulties in children with ASD. The current evidence implicates impairments in fine motor control and visual-motor integration as likely contributors to handwriting difficulties in children with ASD, though the role of the latter is not well-understood. Moreover, diminished overall legibility and compromised letter formation are emerging points of convergence among existing studies of handwriting quality in children with ASD. En ligne : http://dx.doi.org/10.1007/s10803-011-1206-0 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=148

Specificity of autonomic arousal to anxiety in children with autism spectrum disorder / Tabitha A. CHIU in Autism Research, 9-4 (April 2016)  

Public ISBD [article]  inAutism Research > 9-4 (April 2016) . - p.491-501 Titre : Specificity of autonomic arousal to anxiety in children with autism spectrum disorder Type de document : Texte imprimé et/ou numérique Auteurs : Tabitha A. CHIU, Auteur ; Evdokia ANAGNOSTOU, Auteur ; Jessica BRIAN, Auteur ; Tom CHAU, Auteur ; Azadeh KUSHKI, Auteur Article en page(s) : p.491-501 Langues : Anglais (eng) Mots-clés : physiology  psychophysiology  autism spectrum disorders  autonomic nervous system  arousal  anxiety  cardiac activity Index. décimale : PER Périodiques Résumé : Anxiety is one of the most concerning comorbidities in autism spectrum disorder (ASD) due to its high prevalence, negative impact on physical and psychological well-being, and interaction with core deficits of ASD. Current assessment and treatment of anxiety, which rely on the observation of behavior and self-reports, are often ineffective as ASD is associated with deficits in communication and diminished introspective ability. In this light, autonomic nervous system (ANS) activity has been suggested as a marker of physiological arousal associated with anxiety. However, physiological arousal measured by ANS indices also occurs with other cognitive and emotional processes, and it is unclear whether anxiety-related arousal can be differentiated from that related to other cognitive processes. To address this gap, we investigated the use of linear and nonlinear classification techniques for differentiating anxiety-related arousal from arousal due to three cognitive processes (attention, inhibitory control, and social cognition) and physical activity based on electrocardiography signal features. Our results indicate that over 80% classification accuracy can be achieved, suggesting that ANS response can be used as a specific marker of anxiety-related arousal in a subgroup of children with ASD who demonstrate an increase in heart rate in response to anxiogenic stimuli. Autism Res 2016, 9: 491–501. © 2015 International Society for Autism Research, Wiley Periodicals, Inc. En ligne : http://dx.doi.org/10.1002/aur.1528 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=287 [article] Specificity of autonomic arousal to anxiety in children with autism spectrum disorder [Texte imprimé et/ou numérique] / Tabitha A. CHIU, Auteur ; Evdokia ANAGNOSTOU, Auteur ; Jessica BRIAN, Auteur ; Tom CHAU, Auteur ; Azadeh KUSHKI, Auteur . - p.491-501. Langues : Anglais (eng) in Autism Research > 9-4 (April 2016) . - p.491-501 Mots-clés : physiology  psychophysiology  autism spectrum disorders  autonomic nervous system  arousal  anxiety  cardiac activity Index. décimale : PER Périodiques Résumé : Anxiety is one of the most concerning comorbidities in autism spectrum disorder (ASD) due to its high prevalence, negative impact on physical and psychological well-being, and interaction with core deficits of ASD. Current assessment and treatment of anxiety, which rely on the observation of behavior and self-reports, are often ineffective as ASD is associated with deficits in communication and diminished introspective ability. In this light, autonomic nervous system (ANS) activity has been suggested as a marker of physiological arousal associated with anxiety. However, physiological arousal measured by ANS indices also occurs with other cognitive and emotional processes, and it is unclear whether anxiety-related arousal can be differentiated from that related to other cognitive processes. To address this gap, we investigated the use of linear and nonlinear classification techniques for differentiating anxiety-related arousal from arousal due to three cognitive processes (attention, inhibitory control, and social cognition) and physical activity based on electrocardiography signal features. Our results indicate that over 80% classification accuracy can be achieved, suggesting that ANS response can be used as a specific marker of anxiety-related arousal in a subgroup of children with ASD who demonstrate an increase in heart rate in response to anxiogenic stimuli. Autism Res 2016, 9: 491–501. © 2015 International Society for Autism Research, Wiley Periodicals, Inc. En ligne : http://dx.doi.org/10.1002/aur.1528 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=287

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