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Auteur Mohamed CHETOUANI |
Documents disponibles écrits par cet auteur (4)
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Assessment of the communicative and coordination skills of children with Autism Spectrum Disorders and typically developing children using social signal processing / Emilie DELAHERCHE in Research in Autism Spectrum Disorders, 7-6 (June 2013)
[article]
Titre : Assessment of the communicative and coordination skills of children with Autism Spectrum Disorders and typically developing children using social signal processing Type de document : Texte imprimé et/ou numérique Auteurs : Emilie DELAHERCHE, Auteur ; Mohamed CHETOUANI, Auteur ; Fabienne BIGOURET, Auteur ; Jean XAVIER, Auteur ; Monique PLAZA, Auteur ; David COHEN, Auteur Article en page(s) : p.741-756 Langues : Anglais (eng) Mots-clés : Social signal processing Coordination Imitation Autism spectrum disorder Index. décimale : PER Périodiques Résumé : To cooperate with a partner, it is essential to communicate by sharing information through all available avenues, including hand gestures, gazes, head gestures and naturally, speech. In this paper, we compare the communicative and coordination skills of children with typical development to those of children with Autism Spectrum Disorders (ASDs) in cooperative joint action tasks. Communicative skills were assessed using a pragmatic annotation grid. Coordination skills were assessed based on automatically extracted features that characterize interactive behavior (turn-taking, synchronized gestures). First, we tested the performance of the interactive features when discriminating between the two groups of children (typical vs. ASD). Features characterizing the gestural rhythms of the therapist and the duration of his gestural pauses were particularly accurate at discriminating between the two groups. Second, we tested the ability of these features for the continuous classification problem of predicting the developmental age of the child. The duration of the verbal interventions of the therapist were predictive of the age of the child in all tasks. Furthermore, more features were predictive of the age of the child when the child had to lead the task. We conclude that social signal processing is a promising tool for the study of communication and interaction in children with ASD because we showed that therapists adapt differentially in three different tasks according to age and clinical status. En ligne : http://dx.doi.org/10.1016/j.rasd.2013.02.003 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=199
in Research in Autism Spectrum Disorders > 7-6 (June 2013) . - p.741-756[article] Assessment of the communicative and coordination skills of children with Autism Spectrum Disorders and typically developing children using social signal processing [Texte imprimé et/ou numérique] / Emilie DELAHERCHE, Auteur ; Mohamed CHETOUANI, Auteur ; Fabienne BIGOURET, Auteur ; Jean XAVIER, Auteur ; Monique PLAZA, Auteur ; David COHEN, Auteur . - p.741-756.
Langues : Anglais (eng)
in Research in Autism Spectrum Disorders > 7-6 (June 2013) . - p.741-756
Mots-clés : Social signal processing Coordination Imitation Autism spectrum disorder Index. décimale : PER Périodiques Résumé : To cooperate with a partner, it is essential to communicate by sharing information through all available avenues, including hand gestures, gazes, head gestures and naturally, speech. In this paper, we compare the communicative and coordination skills of children with typical development to those of children with Autism Spectrum Disorders (ASDs) in cooperative joint action tasks. Communicative skills were assessed using a pragmatic annotation grid. Coordination skills were assessed based on automatically extracted features that characterize interactive behavior (turn-taking, synchronized gestures). First, we tested the performance of the interactive features when discriminating between the two groups of children (typical vs. ASD). Features characterizing the gestural rhythms of the therapist and the duration of his gestural pauses were particularly accurate at discriminating between the two groups. Second, we tested the ability of these features for the continuous classification problem of predicting the developmental age of the child. The duration of the verbal interventions of the therapist were predictive of the age of the child in all tasks. Furthermore, more features were predictive of the age of the child when the child had to lead the task. We conclude that social signal processing is a promising tool for the study of communication and interaction in children with ASD because we showed that therapists adapt differentially in three different tasks according to age and clinical status. En ligne : http://dx.doi.org/10.1016/j.rasd.2013.02.003 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=199 Differential language markers of pathology in Autism, Pervasive Developmental Disorder Not Otherwise Specified and Specific Language Impairment / Julie DEMOUY in Research in Autism Spectrum Disorders, 5-4 (October-December 2011)
[article]
Titre : Differential language markers of pathology in Autism, Pervasive Developmental Disorder Not Otherwise Specified and Specific Language Impairment Type de document : Texte imprimé et/ou numérique Auteurs : Julie DEMOUY, Auteur ; Monique PLAZA, Auteur ; Jean XAVIER, Auteur ; Fabien RINGEVAL, Auteur ; Mohamed CHETOUANI, Auteur ; Didier PERISSE, Auteur ; Dominique CHAUVIN, Auteur ; Sylvie VIAUX, Auteur ; Bernard GOLSE, Auteur ; David COHEN, Auteur ; Laurence ROBEL, Auteur Année de publication : 2011 Article en page(s) : p.1402-1412 Langues : Anglais (eng) Mots-clés : Autism Specific Language Impairment Pervasive Developmental Disorder Not Otherwise Specified Language Prosody Index. décimale : PER Périodiques Résumé : Language impairment is a common core feature in Pervasive Developmental Disorders (PDD) and Specific Language Impairment (SLI). Many studies have tried to define the specific language profiles of these disorders, some claiming the existence of overlaps, and others conceiving of them as separate categories. Fewer have sought to determine whether and how PDD-NOS language profile, including prosody, differs from those of Autistic Disorder (AD) and SLI. Here, 12 children with AD (mean age 9.75; sd 3.5), 10 with PDD-NOS (mean age 9.83; sd 2.17), and 13 children with SLI (mean age 9.17; sd 3.9) matched for age, sex and academic skills were explored for both receptive and expressive language skills. Prosody was also assessed with an intonation imitation task analyzed through automatic speech processing and compared to 70 typical developing controls matched for age and sex. A similar delay in phonology and vocabulary was observed in the three groups as were significant but variable differences between the groups in syntax, pragmatics and prosody. SLI showed correlations between chronological age and raw scores in all language tasks, while AD and PDD-NOS did not. Furthermore, SLI showed correlation within all raw scores in language tasks. Most of those correlations were also found in PDD-NOS but not in AD. In conclusion, these findings support the hypothesis that language skills in AD and SLI rely on different mechanisms, while PDD-NOS show an intermediate profile sharing some characteristics of both AD and SLI. They also suggest that expressive syntax, pragmatic skills and some intonation features could be considered as language differential markers of pathology, challenging the DSM-V proposal of broad criteria. En ligne : http://dx.doi.org/10.1016/j.rasd.2011.01.026 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=125
in Research in Autism Spectrum Disorders > 5-4 (October-December 2011) . - p.1402-1412[article] Differential language markers of pathology in Autism, Pervasive Developmental Disorder Not Otherwise Specified and Specific Language Impairment [Texte imprimé et/ou numérique] / Julie DEMOUY, Auteur ; Monique PLAZA, Auteur ; Jean XAVIER, Auteur ; Fabien RINGEVAL, Auteur ; Mohamed CHETOUANI, Auteur ; Didier PERISSE, Auteur ; Dominique CHAUVIN, Auteur ; Sylvie VIAUX, Auteur ; Bernard GOLSE, Auteur ; David COHEN, Auteur ; Laurence ROBEL, Auteur . - 2011 . - p.1402-1412.
Langues : Anglais (eng)
in Research in Autism Spectrum Disorders > 5-4 (October-December 2011) . - p.1402-1412
Mots-clés : Autism Specific Language Impairment Pervasive Developmental Disorder Not Otherwise Specified Language Prosody Index. décimale : PER Périodiques Résumé : Language impairment is a common core feature in Pervasive Developmental Disorders (PDD) and Specific Language Impairment (SLI). Many studies have tried to define the specific language profiles of these disorders, some claiming the existence of overlaps, and others conceiving of them as separate categories. Fewer have sought to determine whether and how PDD-NOS language profile, including prosody, differs from those of Autistic Disorder (AD) and SLI. Here, 12 children with AD (mean age 9.75; sd 3.5), 10 with PDD-NOS (mean age 9.83; sd 2.17), and 13 children with SLI (mean age 9.17; sd 3.9) matched for age, sex and academic skills were explored for both receptive and expressive language skills. Prosody was also assessed with an intonation imitation task analyzed through automatic speech processing and compared to 70 typical developing controls matched for age and sex. A similar delay in phonology and vocabulary was observed in the three groups as were significant but variable differences between the groups in syntax, pragmatics and prosody. SLI showed correlations between chronological age and raw scores in all language tasks, while AD and PDD-NOS did not. Furthermore, SLI showed correlation within all raw scores in language tasks. Most of those correlations were also found in PDD-NOS but not in AD. In conclusion, these findings support the hypothesis that language skills in AD and SLI rely on different mechanisms, while PDD-NOS show an intermediate profile sharing some characteristics of both AD and SLI. They also suggest that expressive syntax, pragmatic skills and some intonation features could be considered as language differential markers of pathology, challenging the DSM-V proposal of broad criteria. En ligne : http://dx.doi.org/10.1016/j.rasd.2011.01.026 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=125 How children with autism spectrum disorder behave and explore the 4-dimensional (spatial 3D#xa0;+#xa0;time) environment during a joint attention induction task with a robot / Salvatore Maria ANZALONE in Research in Autism Spectrum Disorders, 8-7 (July 2014)
[article]
Titre : How children with autism spectrum disorder behave and explore the 4-dimensional (spatial 3D#xa0;+#xa0;time) environment during a joint attention induction task with a robot Type de document : Texte imprimé et/ou numérique Auteurs : Salvatore Maria ANZALONE, Auteur ; Elodie TILMONT, Auteur ; Sofiane BOUCENNA, Auteur ; Jean XAVIER, Auteur ; Anne-Lise JOUEN, Auteur ; Nicolas BODEAU, Auteur ; Koushik MAHARATNA, Auteur ; Mohamed CHETOUANI, Auteur ; David COHEN, Auteur Article en page(s) : p.814-826 Langues : Anglais (eng) Mots-clés : Autism spectrum disorder Development Social engagement Joint attention Social robots Index. décimale : PER Périodiques Résumé : Abstract We aimed to compare, during a joint attention (JA) elicitation task, how children with autism spectrum disorder (ASD) and children with typical development (TD) behave and explore their 4 dimensional (meaning spatial 3D + time) when interacting with a human or with a robotic agent. We built a system that employed a Nao robot and a perception system based on a RGB-D sensor (Kinect) to capture social engagement cues. A JA induction experiment was performed in which children with ASD (N = 16) and matched TD children (N = 16) had a 3-min interaction with the robot or with a therapist. Nao induced JA by gazing; by gazing and pointing; and by gazing, pointing and vocalizing at pictures. Both groups of children performed well with the therapist. However, with Nao, both groups had lower JA scores, and the children with ASD had a significantly lower score than the TD children. We found that (i) multimodal JA induction was more efficient in both groups; (ii) the 3D spatial world gaze exploration showed less accuracy; and (iii) the trunk position in ASD showed less stability in the 4 dimensions compared to TD controls. We conclude that, in ASD, JA skill depends on the interaction partner, and implies a higher motor and cognitive cost. En ligne : http://dx.doi.org/10.1016/j.rasd.2014.03.002 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=233
in Research in Autism Spectrum Disorders > 8-7 (July 2014) . - p.814-826[article] How children with autism spectrum disorder behave and explore the 4-dimensional (spatial 3D#xa0;+#xa0;time) environment during a joint attention induction task with a robot [Texte imprimé et/ou numérique] / Salvatore Maria ANZALONE, Auteur ; Elodie TILMONT, Auteur ; Sofiane BOUCENNA, Auteur ; Jean XAVIER, Auteur ; Anne-Lise JOUEN, Auteur ; Nicolas BODEAU, Auteur ; Koushik MAHARATNA, Auteur ; Mohamed CHETOUANI, Auteur ; David COHEN, Auteur . - p.814-826.
Langues : Anglais (eng)
in Research in Autism Spectrum Disorders > 8-7 (July 2014) . - p.814-826
Mots-clés : Autism spectrum disorder Development Social engagement Joint attention Social robots Index. décimale : PER Périodiques Résumé : Abstract We aimed to compare, during a joint attention (JA) elicitation task, how children with autism spectrum disorder (ASD) and children with typical development (TD) behave and explore their 4 dimensional (meaning spatial 3D + time) when interacting with a human or with a robotic agent. We built a system that employed a Nao robot and a perception system based on a RGB-D sensor (Kinect) to capture social engagement cues. A JA induction experiment was performed in which children with ASD (N = 16) and matched TD children (N = 16) had a 3-min interaction with the robot or with a therapist. Nao induced JA by gazing; by gazing and pointing; and by gazing, pointing and vocalizing at pictures. Both groups of children performed well with the therapist. However, with Nao, both groups had lower JA scores, and the children with ASD had a significantly lower score than the TD children. We found that (i) multimodal JA induction was more efficient in both groups; (ii) the 3D spatial world gaze exploration showed less accuracy; and (iii) the trunk position in ASD showed less stability in the 4 dimensions compared to TD controls. We conclude that, in ASD, JA skill depends on the interaction partner, and implies a higher motor and cognitive cost. En ligne : http://dx.doi.org/10.1016/j.rasd.2014.03.002 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=233 What studies of family home movies can teach us about autistic infants: A literature review / Catherine SAINT-GEORGES in Research in Autism Spectrum Disorders, 4-3 (July-September 2010)
[article]
Titre : What studies of family home movies can teach us about autistic infants: A literature review Type de document : Texte imprimé et/ou numérique Auteurs : Catherine SAINT-GEORGES, Auteur ; Marie-Christine LAZNIK, Auteur ; David COHEN, Auteur ; Sandra MAESTRO, Auteur ; Filippo MURATORI, Auteur ; Raquel S. CASSEL, Auteur ; Mohamed CHETOUANI, Auteur Année de publication : 2010 Article en page(s) : p.355-366 Langues : Anglais (eng) Mots-clés : Autism Pervasive-Developmental-Disorder Home-movies Early-identification Regression Index. décimale : PER Périodiques Résumé : The current study reviewed all prior studies conducted on family home movies of infants who would be later diagnosed with autism spectrum disorder (ASD). Out of 41 original reports found since 1975, we retained 18 studies (317 films, maximum), sorted according to their methodological design using a quality grid. In the first 2 years of life, signs that differentiated children with ASD from children with developmental delays were as follows: less of a response to their name, less looking at others, lower eye contact quality and quantity, less positive facial expression and intersubjective behaviors (e.g., showing shared attention). Studies focusing on regression confirmed the clinical validity of the phenomena. We conclude that findings from home movies studies along with prospective studies have created the bases for identification of infants and toddlers at risk of developing ASD before the 18–24-month period, despite early diagnosis of autism remains a complex challenge. En ligne : http://dx.doi.org/10.1016/j.rasd.2009.10.017 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=100
in Research in Autism Spectrum Disorders > 4-3 (July-September 2010) . - p.355-366[article] What studies of family home movies can teach us about autistic infants: A literature review [Texte imprimé et/ou numérique] / Catherine SAINT-GEORGES, Auteur ; Marie-Christine LAZNIK, Auteur ; David COHEN, Auteur ; Sandra MAESTRO, Auteur ; Filippo MURATORI, Auteur ; Raquel S. CASSEL, Auteur ; Mohamed CHETOUANI, Auteur . - 2010 . - p.355-366.
Langues : Anglais (eng)
in Research in Autism Spectrum Disorders > 4-3 (July-September 2010) . - p.355-366
Mots-clés : Autism Pervasive-Developmental-Disorder Home-movies Early-identification Regression Index. décimale : PER Périodiques Résumé : The current study reviewed all prior studies conducted on family home movies of infants who would be later diagnosed with autism spectrum disorder (ASD). Out of 41 original reports found since 1975, we retained 18 studies (317 films, maximum), sorted according to their methodological design using a quality grid. In the first 2 years of life, signs that differentiated children with ASD from children with developmental delays were as follows: less of a response to their name, less looking at others, lower eye contact quality and quantity, less positive facial expression and intersubjective behaviors (e.g., showing shared attention). Studies focusing on regression confirmed the clinical validity of the phenomena. We conclude that findings from home movies studies along with prospective studies have created the bases for identification of infants and toddlers at risk of developing ASD before the 18–24-month period, despite early diagnosis of autism remains a complex challenge. En ligne : http://dx.doi.org/10.1016/j.rasd.2009.10.017 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=100