Anthropomorphic bias found in typically developing children is not found in children with autistic spectrum disorder / Thierry CHAMINADE in Autism, 19-2 (February 2015)  

Public ISBD [article]  inAutism > 19-2 (February 2015) . - p.248-251 Titre : Anthropomorphic bias found in typically developing children is not found in children with autistic spectrum disorder Type de document : Texte imprimé et/ou numérique Auteurs : Thierry CHAMINADE, Auteur ; Delphine ROSSET, Auteur ; David DA FONSECA, Auteur ; Jessica K. HODGINS, Auteur ; Christine DERUELLE, Auteur Article en page(s) : p.248-251 Langues : Anglais (eng) Mots-clés : Biological motion  computer-animated characters Index. décimale : PER Périodiques Résumé : The anthropomorphic bias describes the finding that the perceived naturalness of a biological motion decreases as the human-likeness of a computer-animated agent increases. To investigate the anthropomorphic bias in autistic children, human or cartoon characters were presented with biological and artificial motions side by side on a touchscreen. Children were required to touch one that would grow while the other would disappear, implicitly rewarding their choice. Only typically developing controls depicted the expected preference for biological motion when rendered with human, but not cartoon, characters. Despite performing the task to report a preference, children with autism depicted neither normal nor reversed anthropomorphic bias, suggesting that they are not sensitive to the congruence of form and motion information when observing computer-animated agents’ actions. En ligne : http://dx.doi.org/10.1177/1362361313512425 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=257 [article] Anthropomorphic bias found in typically developing children is not found in children with autistic spectrum disorder [Texte imprimé et/ou numérique] / Thierry CHAMINADE, Auteur ; Delphine ROSSET, Auteur ; David DA FONSECA, Auteur ; Jessica K. HODGINS, Auteur ; Christine DERUELLE, Auteur . - p.248-251. Langues : Anglais (eng) in Autism > 19-2 (February 2015) . - p.248-251 Mots-clés : Biological motion  computer-animated characters Index. décimale : PER Périodiques Résumé : The anthropomorphic bias describes the finding that the perceived naturalness of a biological motion decreases as the human-likeness of a computer-animated agent increases. To investigate the anthropomorphic bias in autistic children, human or cartoon characters were presented with biological and artificial motions side by side on a touchscreen. Children were required to touch one that would grow while the other would disappear, implicitly rewarding their choice. Only typically developing controls depicted the expected preference for biological motion when rendered with human, but not cartoon, characters. Despite performing the task to report a preference, children with autism depicted neither normal nor reversed anthropomorphic bias, suggesting that they are not sensitive to the congruence of form and motion information when observing computer-animated agents’ actions. En ligne : http://dx.doi.org/10.1177/1362361313512425 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=257

Atypical modulation of hypothalamic activity by social context in ASD / Thierry CHAMINADE in Research in Autism Spectrum Disorders, 10 (February 2015)  

Public ISBD [article]  inResearch in Autism Spectrum Disorders > 10 (February 2015) . - p.41-50 Titre : Atypical modulation of hypothalamic activity by social context in ASD Type de document : Texte imprimé et/ou numérique Auteurs : Thierry CHAMINADE, Auteur ; David DA FONSECA, Auteur ; Delphine ROSSET, Auteur ; Gordon CHENG, Auteur ; Christine DERUELLE, Auteur Article en page(s) : p.41-50 Langues : Anglais (eng) Mots-clés : Autism  Social interaction  Mentalization  Social motivation  Hypothalamus Index. décimale : PER Périodiques Résumé : High-functioning individuals with Autism Spectrum Disorder (ASD) and age- and verbal IQ-matched controls (CTL) were fMRI scanned when playing “stone paper scissors”. They believed they were playing against three different opponents: a Human, a Robot endowed with an artificial intelligence attempting to win the game, and a Computer running a random number generator. No differences between ASD and CTL reached significance in canonical mentalizing regions, in the medial prefrontal cortex and right temporoparietal junction. In contrast, activity in a cluster located in the left hypothalamus, attributed to the paraventricular hypothalamic nucleus (PHN), increased in the CTL, but not ASD, group when participants played against the human compared to the artificial agent. The left temporoparietal junction (lTPJ), that has been previously associated with anthropomorphization, influenced this PHN cluster activity differently between groups, with a significantly negative functional connectivity when CTL played against the robot and when ASD participants played against the human. Brain activity results are consistent with the hypothesis that hypothalamus-secreted neurohormones, including oxytocin, could support motivation for social interactions and be impaired in autism. Brain connectivity results suggest that cortical encoding of social context information, putatively related to anthropomorphism, has a reversed effect on hypothalamus activity in autism. En ligne : http://dx.doi.org/10.1016/j.rasd.2014.10.015 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=260 [article] Atypical modulation of hypothalamic activity by social context in ASD [Texte imprimé et/ou numérique] / Thierry CHAMINADE, Auteur ; David DA FONSECA, Auteur ; Delphine ROSSET, Auteur ; Gordon CHENG, Auteur ; Christine DERUELLE, Auteur . - p.41-50. Langues : Anglais (eng) in Research in Autism Spectrum Disorders > 10 (February 2015) . - p.41-50 Mots-clés : Autism  Social interaction  Mentalization  Social motivation  Hypothalamus Index. décimale : PER Périodiques Résumé : High-functioning individuals with Autism Spectrum Disorder (ASD) and age- and verbal IQ-matched controls (CTL) were fMRI scanned when playing “stone paper scissors”. They believed they were playing against three different opponents: a Human, a Robot endowed with an artificial intelligence attempting to win the game, and a Computer running a random number generator. No differences between ASD and CTL reached significance in canonical mentalizing regions, in the medial prefrontal cortex and right temporoparietal junction. In contrast, activity in a cluster located in the left hypothalamus, attributed to the paraventricular hypothalamic nucleus (PHN), increased in the CTL, but not ASD, group when participants played against the human compared to the artificial agent. The left temporoparietal junction (lTPJ), that has been previously associated with anthropomorphization, influenced this PHN cluster activity differently between groups, with a significantly negative functional connectivity when CTL played against the robot and when ASD participants played against the human. Brain activity results are consistent with the hypothesis that hypothalamus-secreted neurohormones, including oxytocin, could support motivation for social interactions and be impaired in autism. Brain connectivity results suggest that cortical encoding of social context information, putatively related to anthropomorphism, has a reversed effect on hypothalamus activity in autism. En ligne : http://dx.doi.org/10.1016/j.rasd.2014.10.015 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=260

Just Another Social Scene: Evidence for Decreased Attention to Negative Social Scenes in High-Functioning Autism / Andreia SANTOS in Journal of Autism and Developmental Disorders, 42-9 (September 2012)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 42-9 (September 2012) . - p.1790-1798 Titre : Just Another Social Scene: Evidence for Decreased Attention to Negative Social Scenes in High-Functioning Autism Type de document : Texte imprimé et/ou numérique Auteurs : Andreia SANTOS, Auteur ; Thierry CHAMINADE, Auteur ; David DA FONSECA, Auteur ; Catarina SILVA, Auteur ; Delphine ROSSET, Auteur ; Christine DERUELLE, Auteur Année de publication : 2012 Article en page(s) : p.1790-1798 Langues : Anglais (eng) Mots-clés : Autism spectrum disorders  Threat detection advantage  Eye-tracking Index. décimale : PER Périodiques Résumé : The adaptive threat-detection advantage takes the form of a preferential orienting of attention to threatening scenes. In this study, we compared attention to social scenes in 15 high-functioning individuals with autism (ASD) and matched typically developing (TD) individuals. Eye-tracking was recorded while participants were presented with pairs of scenes, either emotional positive-neutral, emotional negative-neutral or neutral–neutral scenes. Early allocation of attention, the first image fixated in each pair, differed between groups: contrary to TD individuals who showed the typical threat-detection advantage towards negative images, the ASD group failed to show a bias toward threat-related scenes. Later processing of stimuli, indicated by the total fixation to the images during the 3-s presentation, was found unaffected in the ASD group. These results support the hypothesis of an early atypical allocation of attention towards natural social scenes in ASD, that is compensated in later stages of visual processing. En ligne : http://dx.doi.org/10.1007/s10803-011-1415-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=180 [article] Just Another Social Scene: Evidence for Decreased Attention to Negative Social Scenes in High-Functioning Autism [Texte imprimé et/ou numérique] / Andreia SANTOS, Auteur ; Thierry CHAMINADE, Auteur ; David DA FONSECA, Auteur ; Catarina SILVA, Auteur ; Delphine ROSSET, Auteur ; Christine DERUELLE, Auteur . - 2012 . - p.1790-1798. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 42-9 (September 2012) . - p.1790-1798 Mots-clés : Autism spectrum disorders  Threat detection advantage  Eye-tracking Index. décimale : PER Périodiques Résumé : The adaptive threat-detection advantage takes the form of a preferential orienting of attention to threatening scenes. In this study, we compared attention to social scenes in 15 high-functioning individuals with autism (ASD) and matched typically developing (TD) individuals. Eye-tracking was recorded while participants were presented with pairs of scenes, either emotional positive-neutral, emotional negative-neutral or neutral–neutral scenes. Early allocation of attention, the first image fixated in each pair, differed between groups: contrary to TD individuals who showed the typical threat-detection advantage towards negative images, the ASD group failed to show a bias toward threat-related scenes. Later processing of stimuli, indicated by the total fixation to the images during the 3-s presentation, was found unaffected in the ASD group. These results support the hypothesis of an early atypical allocation of attention towards natural social scenes in ASD, that is compensated in later stages of visual processing. En ligne : http://dx.doi.org/10.1007/s10803-011-1415-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=180

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