4 recherche sur le mot-clé 'entropy'

Assessing unpredictability in caregiver-child relationships: Insights from theoretical and empirical perspectives / Elisa UGARTE in Development and Psychopathology, 36-3 (August 2024)  

Public ISBD [article]  inDevelopment and Psychopathology > 36-3 (August 2024) . - p.1070-1089 Titre : Assessing unpredictability in caregiver-child relationships: Insights from theoretical and empirical perspectives Type de document : Texte imprimé et/ou numérique Auteurs : Elisa UGARTE, Auteur ; Paul D. HASTINGS, Auteur Article en page(s) : p.1070-1089 Langues : Anglais (eng) Mots-clés : caregiver unpredictability  dynamic systems  entropy  environmental statistics  unpredictability Index. décimale : PER Périodiques Résumé : There has been significant interest and progress in understanding the role of caregiver unpredictability on brain maturation, cognitive and socioemotional development, and psychopathology. Theoretical consensus has emerged about the unique influence of unpredictability in shaping children?s experience, distinct from other adverse exposures or features of stress exposure. Nonetheless, the field still lacks theoretical and empirical common ground due to difficulties in accurately conceptualizing and measuring unpredictability in the caregiver-child relationship. In this paper, we first provide an overview of the role of unpredictability in theories of caregiving and childhood adversity and present four issues that are currently under-discussed but are crucial to the field. Focusing on how moment-to-moment and day-to-day dynamics are at the heart of caregiver unpredictability, we review three approaches aiming to address some of these nuances: Environmental statistics, entropy, and dynamic systems. Lastly, we conclude with a broad summary and suggest future research directions. Systematic progress in this field can inform interventions and policies aiming to increase stability in the lives of children. En ligne : https://dx.doi.org/10.1017/S0954579423000305 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=538 [article] Assessing unpredictability in caregiver-child relationships: Insights from theoretical and empirical perspectives [Texte imprimé et/ou numérique] / Elisa UGARTE, Auteur ; Paul D. HASTINGS, Auteur . - p.1070-1089. Langues : Anglais (eng) in Development and Psychopathology > 36-3 (August 2024) . - p.1070-1089 Mots-clés : caregiver unpredictability  dynamic systems  entropy  environmental statistics  unpredictability Index. décimale : PER Périodiques Résumé : There has been significant interest and progress in understanding the role of caregiver unpredictability on brain maturation, cognitive and socioemotional development, and psychopathology. Theoretical consensus has emerged about the unique influence of unpredictability in shaping children?s experience, distinct from other adverse exposures or features of stress exposure. Nonetheless, the field still lacks theoretical and empirical common ground due to difficulties in accurately conceptualizing and measuring unpredictability in the caregiver-child relationship. In this paper, we first provide an overview of the role of unpredictability in theories of caregiving and childhood adversity and present four issues that are currently under-discussed but are crucial to the field. Focusing on how moment-to-moment and day-to-day dynamics are at the heart of caregiver unpredictability, we review three approaches aiming to address some of these nuances: Environmental statistics, entropy, and dynamic systems. Lastly, we conclude with a broad summary and suggest future research directions. Systematic progress in this field can inform interventions and policies aiming to increase stability in the lives of children. En ligne : https://dx.doi.org/10.1017/S0954579423000305 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=538

Autonomic complexity and emotion (dys-)regulation in early childhood across high- and low-risk contexts / Daniel BERRY in Development and Psychopathology, 31-3 (August 2019)  

Public ISBD [article]  inDevelopment and Psychopathology > 31-3 (August 2019) . - p.1173-1190 Titre : Autonomic complexity and emotion (dys-)regulation in early childhood across high- and low-risk contexts Type de document : Texte imprimé et/ou numérique Auteurs : Daniel BERRY, Auteur ; Alyssa R. PALMER, Auteur ; Rebecca DISTEFANO, Auteur ; Ann S. MASTEN, Auteur Article en page(s) : p.1173-1190 Langues : Anglais (eng) Mots-clés : autonomic nervous system  dynamical systems  emotion regulation  entropy  fractal  respiratory sinus arrhythmia Index. décimale : PER Périodiques Résumé : Developing the ability to regulate one's emotions in accordance with contextual demands (i.e., emotion regulation) is a central developmental task of early childhood. These processes are supported by the engagement of the autonomic nervous system (ANS), a physiological hub of a vast network tasked with dynamically integrating real-time experiential inputs with internal motivational and goal states. To date, much of what is known about the ANS and emotion regulation has been based on measures of respiratory sinus arrhythmia, a cardiac indicator of parasympathetic activity. In the present study, we draw from dynamical systems models to introduce two nonlinear indices of cardiac complexity (fractality and sample entropy) as potential indicators of these broader ANS dynamics. Using data from a stratified sample of preschoolers living in high- (i.e., emergency homeless shelter) and low-risk contexts (N = 115), we show that, in conjunction with respiratory sinus arrhythmia, these nonlinear indices may help to clarify important differences in the behavioral manifestations of emotion regulation. In particular, our results suggest that cardiac complexity may be especially useful for discerning active, effortful emotion regulation from less effortful regulation and dysregulation. En ligne : http://dx.doi.org/10.1017/S0954579419000683 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=403 [article] Autonomic complexity and emotion (dys-)regulation in early childhood across high- and low-risk contexts [Texte imprimé et/ou numérique] / Daniel BERRY, Auteur ; Alyssa R. PALMER, Auteur ; Rebecca DISTEFANO, Auteur ; Ann S. MASTEN, Auteur . - p.1173-1190. Langues : Anglais (eng) in Development and Psychopathology > 31-3 (August 2019) . - p.1173-1190 Mots-clés : autonomic nervous system  dynamical systems  emotion regulation  entropy  fractal  respiratory sinus arrhythmia Index. décimale : PER Périodiques Résumé : Developing the ability to regulate one's emotions in accordance with contextual demands (i.e., emotion regulation) is a central developmental task of early childhood. These processes are supported by the engagement of the autonomic nervous system (ANS), a physiological hub of a vast network tasked with dynamically integrating real-time experiential inputs with internal motivational and goal states. To date, much of what is known about the ANS and emotion regulation has been based on measures of respiratory sinus arrhythmia, a cardiac indicator of parasympathetic activity. In the present study, we draw from dynamical systems models to introduce two nonlinear indices of cardiac complexity (fractality and sample entropy) as potential indicators of these broader ANS dynamics. Using data from a stratified sample of preschoolers living in high- (i.e., emergency homeless shelter) and low-risk contexts (N = 115), we show that, in conjunction with respiratory sinus arrhythmia, these nonlinear indices may help to clarify important differences in the behavioral manifestations of emotion regulation. In particular, our results suggest that cardiac complexity may be especially useful for discerning active, effortful emotion regulation from less effortful regulation and dysregulation. En ligne : http://dx.doi.org/10.1017/S0954579419000683 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=403

Examining the specificity of postural control deficits in children with Autism Spectrum Disorder using a cross-syndrome approach / Daniel E. LIDSTONE in Research in Autism Spectrum Disorders, 72 (April 2020)  

Public ISBD [article]  inResearch in Autism Spectrum Disorders > 72 (April 2020) . - p.101514 Titre : Examining the specificity of postural control deficits in children with Autism Spectrum Disorder using a cross-syndrome approach Type de document : Texte imprimé et/ou numérique Auteurs : Daniel E. LIDSTONE, Auteur ; Faria Z. MIAH, Auteur ; Brach POSTON, Auteur ; Julie F. BEASLEY, Auteur ; Janet S. DUFEK, Auteur Article en page(s) : p.101514 Langues : Anglais (eng) Mots-clés : Cross-syndrome  Postural control  Balance  Postural sway  ASD  Entropy Index. décimale : PER Périodiques Résumé : Background Postural control deficits are commonly reported in children with Autism Spectrum Disorder (ASD). However, identification of specific postural sway features that differentiate ASD from other neurodevelopmental disorders has not been examined. The current study employs a cross-syndrome approach by comparing postural sway area and direction-specific features of sway magnitude, sway velocity, and sway complexity between children with ASD, Fetal Alcohol Spectrum Disorder (FASD), Attention-Deficit Hyperactivity Disorder (ADHD), and typically developing (TD) controls. Method Eighty children (7–17 years old) participated in this study. Postural sway was measured on a force plate during 30-s of bilateral quiet stance and balance was assessed using a timed unipedal stance test. Results Results showed that (1) postural sway area and mediolateral (ML) sway magnitude were significantly greater in children with ASD vs. all groups (p? En ligne : https://doi.org/10.1016/j.rasd.2020.101514 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=420 [article] Examining the specificity of postural control deficits in children with Autism Spectrum Disorder using a cross-syndrome approach [Texte imprimé et/ou numérique] / Daniel E. LIDSTONE, Auteur ; Faria Z. MIAH, Auteur ; Brach POSTON, Auteur ; Julie F. BEASLEY, Auteur ; Janet S. DUFEK, Auteur . - p.101514. Langues : Anglais (eng) in Research in Autism Spectrum Disorders > 72 (April 2020) . - p.101514 Mots-clés : Cross-syndrome  Postural control  Balance  Postural sway  ASD  Entropy Index. décimale : PER Périodiques Résumé : Background Postural control deficits are commonly reported in children with Autism Spectrum Disorder (ASD). However, identification of specific postural sway features that differentiate ASD from other neurodevelopmental disorders has not been examined. The current study employs a cross-syndrome approach by comparing postural sway area and direction-specific features of sway magnitude, sway velocity, and sway complexity between children with ASD, Fetal Alcohol Spectrum Disorder (FASD), Attention-Deficit Hyperactivity Disorder (ADHD), and typically developing (TD) controls. Method Eighty children (7–17 years old) participated in this study. Postural sway was measured on a force plate during 30-s of bilateral quiet stance and balance was assessed using a timed unipedal stance test. Results Results showed that (1) postural sway area and mediolateral (ML) sway magnitude were significantly greater in children with ASD vs. all groups (p? En ligne : https://doi.org/10.1016/j.rasd.2020.101514 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=420

Random and Short-Term Excessive Eye Movement in Children with Autism During Face-to-Face Conversation / Zhong ZHAO in Journal of Autism and Developmental Disorders, 52-8 (August 2022)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 52-8 (August 2022) . - p.3699-3710 Titre : Random and Short-Term Excessive Eye Movement in Children with Autism During Face-to-Face Conversation Type de document : Texte imprimé et/ou numérique Auteurs : Zhong ZHAO, Auteur ; Jiayi XING, Auteur ; Xiaobin ZHANG, Auteur ; Xingda QU, Auteur ; Xinyao HU, Auteur ; Jianping LU, Auteur Article en page(s) : p.3699-3710 Langues : Anglais (eng) Mots-clés : Autism Spectrum Disorder  Autistic Disorder  Child  Communication  Eye Movements  Humans  Autism  Entropy  Eye movement quantity  Eye tracking  Face-to-face interaction  Oculomotor Index. décimale : PER Périodiques Résumé : This study investigated the oculomotor performance in children with autism spectrum disorder (ASD) during a face-to-face conversation. A head mounted eye tracker recorded the eye movements in 20 children with ASD and 23 children with typical development (TD). Group comparisons were conducted on the randomness and the quantity of eye movement. The amount of time needed to reveal group difference was also examined. Results showed that the randomness of eye movement was significantly higher at all examined time durations, and the amount of eye movement was significantly greater within 3 s in the ASD group. These findings demonstrated an atypical pattern of oculomotor dynamics in children ASD, which might facilitate the objective identification of ASD during daily social interaction. En ligne : http://dx.doi.org/10.1007/s10803-021-05255-7 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=485 [article] Random and Short-Term Excessive Eye Movement in Children with Autism During Face-to-Face Conversation [Texte imprimé et/ou numérique] / Zhong ZHAO, Auteur ; Jiayi XING, Auteur ; Xiaobin ZHANG, Auteur ; Xingda QU, Auteur ; Xinyao HU, Auteur ; Jianping LU, Auteur . - p.3699-3710. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 52-8 (August 2022) . - p.3699-3710 Mots-clés : Autism Spectrum Disorder  Autistic Disorder  Child  Communication  Eye Movements  Humans  Autism  Entropy  Eye movement quantity  Eye tracking  Face-to-face interaction  Oculomotor Index. décimale : PER Périodiques Résumé : This study investigated the oculomotor performance in children with autism spectrum disorder (ASD) during a face-to-face conversation. A head mounted eye tracker recorded the eye movements in 20 children with ASD and 23 children with typical development (TD). Group comparisons were conducted on the randomness and the quantity of eye movement. The amount of time needed to reveal group difference was also examined. Results showed that the randomness of eye movement was significantly higher at all examined time durations, and the amount of eye movement was significantly greater within 3 s in the ASD group. These findings demonstrated an atypical pattern of oculomotor dynamics in children ASD, which might facilitate the objective identification of ASD during daily social interaction. En ligne : http://dx.doi.org/10.1007/s10803-021-05255-7 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=485