Body Constraints on Motor Simulation in Autism Spectrum Disorders / Massimiliano CONSON in Journal of Autism and Developmental Disorders, 46-3 (March 2016)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 46-3 (March 2016) . - p.1051-1060 Titre : Body Constraints on Motor Simulation in Autism Spectrum Disorders Type de document : Texte imprimé et/ou numérique Auteurs : Massimiliano CONSON, Auteur ; Antonia HAMILTON, Auteur ; Francesco BELLIS, Auteur ; Domenico ERRICO, Auteur ; Ilaria IMPROTA, Auteur ; Elisabetta MAZZARELLA, Auteur ; Luigi TROJANO, Auteur ; Alessandro FROLLI, Auteur Article en page(s) : p.1051-1060 Langues : Anglais (eng) Mots-clés : ASD  Motor simulation  Motor imagery  Proprioception  Mental transformation  Development Index. décimale : PER Périodiques Résumé : Developmental data suggested that mental simulation skills become progressively dissociated from overt motor activity across development. Thus, efficient simulation is rather independent from current sensorimotor information. Here, we tested the impact of bodily (sensorimotor) information on simulation skills of adolescents with Autism Spectrum Disorders (ASD). Typically-developing (TD) and ASD participants judged laterality of hand images while keeping one arm flexed on chest or while holding both arms extended. Both groups were able to mentally simulate actions, but this ability was constrained by body posture more in ASD than in TD adolescents. The strong impact of actual body information on motor simulation implies that simulative skills are not fully effective in ASD individuals. En ligne : http://dx.doi.org/10.1007/s10803-015-2652-x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=281 [article] Body Constraints on Motor Simulation in Autism Spectrum Disorders [Texte imprimé et/ou numérique] / Massimiliano CONSON, Auteur ; Antonia HAMILTON, Auteur ; Francesco BELLIS, Auteur ; Domenico ERRICO, Auteur ; Ilaria IMPROTA, Auteur ; Elisabetta MAZZARELLA, Auteur ; Luigi TROJANO, Auteur ; Alessandro FROLLI, Auteur . - p.1051-1060. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 46-3 (March 2016) . - p.1051-1060 Mots-clés : ASD  Motor simulation  Motor imagery  Proprioception  Mental transformation  Development Index. décimale : PER Périodiques Résumé : Developmental data suggested that mental simulation skills become progressively dissociated from overt motor activity across development. Thus, efficient simulation is rather independent from current sensorimotor information. Here, we tested the impact of bodily (sensorimotor) information on simulation skills of adolescents with Autism Spectrum Disorders (ASD). Typically-developing (TD) and ASD participants judged laterality of hand images while keeping one arm flexed on chest or while holding both arms extended. Both groups were able to mentally simulate actions, but this ability was constrained by body posture more in ASD than in TD adolescents. The strong impact of actual body information on motor simulation implies that simulative skills are not fully effective in ASD individuals. En ligne : http://dx.doi.org/10.1007/s10803-015-2652-x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=281

Dissociation between executed and imagined bimanual movements in autism spectrum conditions / Alessandro PIEDIMONTE in Autism Research, 11-2 (February 2018)  

Public ISBD [article]  inAutism Research > 11-2 (February 2018) . - p.376-384 Titre : Dissociation between executed and imagined bimanual movements in autism spectrum conditions Type de document : Texte imprimé et/ou numérique Auteurs : Alessandro PIEDIMONTE, Auteur ; Massimiliano CONSON, Auteur ; Alessandro FROLLI, Auteur ; Stefania BARI, Auteur ; Francesco Della GATTA, Auteur ; Marco RABUFFETTI, Auteur ; Roberto KELLER, Auteur ; Anna BERTI, Auteur ; Francesca GARBARINI, Auteur Année de publication : 2018 Article en page(s) : p.376-384 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : Autism spectrum conditions (ASC) are characterized by social?communicative deficits and repetitive stereotyped behaviors. Altered motor coordination is also observed and a dysfunction of motor imagery has been recently reported on implicit tasks. However, no information on explicit motor imagery abilities is available in ASC. Here, we employed a spatial bimanual task to concurrently assess motor coordination and explicit motor imagery in autism. A secondary objective of the study was to evaluate these abilities across two populations of ASC, namely adolescents and adults with ASC. To this aim, we took advantage of the circles?lines task in which where participants were asked to continuously draw: right hand lines (unimanual condition); right hand lines and left hand circles (bimanual condition); right hand lines while imagining to draw left hand circles (imagery condition). For each participant, an Ovalization Index (OI) was calculated as a deviation of the right hand drawing trajectory from an absolute vertical axis. Results showed a significant and similar coupling effect in the bimanual condition (i.e., a significant increase of the OI values with respect to the unimanual condition) in both controls and ASC participants. On the contrary, in the imagery condition, a significant coupling effect was found only in controls. Furthermore, adult controls showed a significantly higher imagery coupling effect in comparison to all the other groups. These results demonstrate that atypical motor imagery processes in ASC are not limited to implicit tasks and suggest that development of neural structures involved in motor imagery are immature in ASC. Autism Res 2018, 11: 376–384. © 2017 International Society for Autism Research, Wiley Periodicals, Inc. Lay Summary Autism spectrum conditions (ASC) are characterized by social?communicative and motor coordination difficulties but in many cases also by an impaired capability to imagine movements. In this study we found that while two handed coordination in ASC can be developed as well as in typically developed persons, the development of motor imagery could still be immature in ASC, leading to difficulties in imagining, understanding as well as programming and coordinating complex movements. En ligne : https://doi.org/10.1002/aur.1902 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=334 [article] Dissociation between executed and imagined bimanual movements in autism spectrum conditions [Texte imprimé et/ou numérique] / Alessandro PIEDIMONTE, Auteur ; Massimiliano CONSON, Auteur ; Alessandro FROLLI, Auteur ; Stefania BARI, Auteur ; Francesco Della GATTA, Auteur ; Marco RABUFFETTI, Auteur ; Roberto KELLER, Auteur ; Anna BERTI, Auteur ; Francesca GARBARINI, Auteur . - 2018 . - p.376-384. Langues : Anglais (eng) in Autism Research > 11-2 (February 2018) . - p.376-384 Index. décimale : PER Périodiques Résumé : Autism spectrum conditions (ASC) are characterized by social?communicative deficits and repetitive stereotyped behaviors. Altered motor coordination is also observed and a dysfunction of motor imagery has been recently reported on implicit tasks. However, no information on explicit motor imagery abilities is available in ASC. Here, we employed a spatial bimanual task to concurrently assess motor coordination and explicit motor imagery in autism. A secondary objective of the study was to evaluate these abilities across two populations of ASC, namely adolescents and adults with ASC. To this aim, we took advantage of the circles?lines task in which where participants were asked to continuously draw: right hand lines (unimanual condition); right hand lines and left hand circles (bimanual condition); right hand lines while imagining to draw left hand circles (imagery condition). For each participant, an Ovalization Index (OI) was calculated as a deviation of the right hand drawing trajectory from an absolute vertical axis. Results showed a significant and similar coupling effect in the bimanual condition (i.e., a significant increase of the OI values with respect to the unimanual condition) in both controls and ASC participants. On the contrary, in the imagery condition, a significant coupling effect was found only in controls. Furthermore, adult controls showed a significantly higher imagery coupling effect in comparison to all the other groups. These results demonstrate that atypical motor imagery processes in ASC are not limited to implicit tasks and suggest that development of neural structures involved in motor imagery are immature in ASC. Autism Res 2018, 11: 376–384. © 2017 International Society for Autism Research, Wiley Periodicals, Inc. Lay Summary Autism spectrum conditions (ASC) are characterized by social?communicative and motor coordination difficulties but in many cases also by an impaired capability to imagine movements. In this study we found that while two handed coordination in ASC can be developed as well as in typically developed persons, the development of motor imagery could still be immature in ASC, leading to difficulties in imagining, understanding as well as programming and coordinating complex movements. En ligne : https://doi.org/10.1002/aur.1902 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=334

Early psychomotor intervention in the treatment of young children with autism spectrum disorder / Roberto MILITERNI

Public ISBD in Neurobiology, diagnosis and treatment in autism / Daria RIVA Titre : Early psychomotor intervention in the treatment of young children with autism spectrum disorder Type de document : Texte imprimé et/ou numérique Auteurs : Roberto MILITERNI, Auteur ; Alessandro FROLLI, Auteur ; Giovanna GISON, Auteur ; Guido MILITERNI, Auteur ; Ivana SOZIO, Auteur Année de publication : 2013 Importance : p.187-194 Langues : Anglais (eng) Index. décimale : SCI-D SCI-D - Neurosciences Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=217 in Neurobiology, diagnosis and treatment in autism / Daria RIVA Early psychomotor intervention in the treatment of young children with autism spectrum disorder [Texte imprimé et/ou numérique] / Roberto MILITERNI, Auteur ; Alessandro FROLLI, Auteur ; Giovanna GISON, Auteur ; Guido MILITERNI, Auteur ; Ivana SOZIO, Auteur . - 2013 . - p.187-194. Langues : Anglais (eng) Index. décimale : SCI-D SCI-D - Neurosciences Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=217

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Principal pathogenetic components and biological endophenotypes in autism spectrum disorders / Roberto SACCO in Autism Research, 3-5 (October 2010)  

Public ISBD [article]  inAutism Research > 3-5 (October 2010) . - p.237-252 Titre : Principal pathogenetic components and biological endophenotypes in autism spectrum disorders Type de document : Texte imprimé et/ou numérique Auteurs : Roberto SACCO, Auteur ; Paolo CURATOLO, Auteur ; Barbara MANZI, Auteur ; Roberto MILITERNI, Auteur ; Carmela BRAVACCIO, Auteur ; Alessandro FROLLI, Auteur ; Carlo LENTI, Auteur ; Monica SACCANI, Auteur ; Maurizio ELIA, Auteur ; Karl-Ludvig REICHELT, Auteur ; Tiziana PASCUCCI, Auteur ; Stefano PUGLISI-ALLEGRA, Auteur ; Antonio M. PERSICO, Auteur Année de publication : 2010 Article en page(s) : p.237-252 Langues : Anglais (eng) Mots-clés : autistic disorder  macrocephaly  neurodevelopment  pervasive developmental disorders  principal component analysis  serotonin Index. décimale : PER Périodiques Résumé : Autism is a complex neurodevelopmental disorder, likely encompassing multiple pathogenetic components. The aim of this study is to begin identifying at least some of these components and to assess their association with biological endophenotypes. To address this issue, we recruited 245 Italian patients with idiopathic autism spectrum disorders and their first-degree relatives. Using a stepwise approach, patient and family history variables were analyzed using principal component analysis (“exploratory phase”), followed by intra- and inter-component cross-correlation analyses (“follow-up phase”), and by testing for association between each component and biological endophenotypes, namely head circumference, serotonin blood levels, and global urinary peptide excretion rates (“biological correlation phase”). Four independent components were identified, namely “circadian & sensory dysfunction,” “immune dysfunction,” “neurodevelopmental delay,” and “stereotypic behavior,” together representing 74.5% of phenotypic variance in our sample. Marker variables in the latter three components are positively associated with macrocephaly, global peptiduria, and serotonin blood levels, respectively. These four components point toward at least four processes associated with autism, namely (I) a disruption of the circadian cycle associated with behavioral and sensory abnormalities, (II) dysreactive immune processes, surprisingly linked both to prenatal obstetric complications and to excessive postnatal body growth rates, (III) a generalized developmental delay, and (IV) an abnormal neural circuitry underlying stereotypies and early social behaviors. En ligne : http://dx.doi.org/10.1002/aur.151 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=115 [article] Principal pathogenetic components and biological endophenotypes in autism spectrum disorders [Texte imprimé et/ou numérique] / Roberto SACCO, Auteur ; Paolo CURATOLO, Auteur ; Barbara MANZI, Auteur ; Roberto MILITERNI, Auteur ; Carmela BRAVACCIO, Auteur ; Alessandro FROLLI, Auteur ; Carlo LENTI, Auteur ; Monica SACCANI, Auteur ; Maurizio ELIA, Auteur ; Karl-Ludvig REICHELT, Auteur ; Tiziana PASCUCCI, Auteur ; Stefano PUGLISI-ALLEGRA, Auteur ; Antonio M. PERSICO, Auteur . - 2010 . - p.237-252. Langues : Anglais (eng) in Autism Research > 3-5 (October 2010) . - p.237-252 Mots-clés : autistic disorder  macrocephaly  neurodevelopment  pervasive developmental disorders  principal component analysis  serotonin Index. décimale : PER Périodiques Résumé : Autism is a complex neurodevelopmental disorder, likely encompassing multiple pathogenetic components. The aim of this study is to begin identifying at least some of these components and to assess their association with biological endophenotypes. To address this issue, we recruited 245 Italian patients with idiopathic autism spectrum disorders and their first-degree relatives. Using a stepwise approach, patient and family history variables were analyzed using principal component analysis (“exploratory phase”), followed by intra- and inter-component cross-correlation analyses (“follow-up phase”), and by testing for association between each component and biological endophenotypes, namely head circumference, serotonin blood levels, and global urinary peptide excretion rates (“biological correlation phase”). Four independent components were identified, namely “circadian & sensory dysfunction,” “immune dysfunction,” “neurodevelopmental delay,” and “stereotypic behavior,” together representing 74.5% of phenotypic variance in our sample. Marker variables in the latter three components are positively associated with macrocephaly, global peptiduria, and serotonin blood levels, respectively. These four components point toward at least four processes associated with autism, namely (I) a disruption of the circadian cycle associated with behavioral and sensory abnormalities, (II) dysreactive immune processes, surprisingly linked both to prenatal obstetric complications and to excessive postnatal body growth rates, (III) a generalized developmental delay, and (IV) an abnormal neural circuitry underlying stereotypies and early social behaviors. En ligne : http://dx.doi.org/10.1002/aur.151 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=115

“Put Myself Into Your Place”: Embodied Simulation and Perspective Taking in Autism Spectrum Disorders / Massimiliano CONSON in Autism Research, 8-4 (August 2015)  

Public ISBD [article]  inAutism Research > 8-4 (August 2015) . - p.454-466 Titre : “Put Myself Into Your Place”: Embodied Simulation and Perspective Taking in Autism Spectrum Disorders Type de document : Texte imprimé et/ou numérique Auteurs : Massimiliano CONSON, Auteur ; Elisabetta MAZZARELLA, Auteur ; Dalila ESPOSITO, Auteur ; Dario GROSSI, Auteur ; Nicoletta MARINO, Auteur ; Angelo MASSAGLI, Auteur ; Alessandro FROLLI, Auteur Article en page(s) : p.454-466 Langues : Anglais (eng) Mots-clés : autism spectrum disorders  high-functioning autism  perspective taking  embodied simulation  body representation  mental rotation Index. décimale : PER Périodiques Résumé : Embodied cognition theories hold that cognitive processes are grounded in bodily states. Embodied processes in autism spectrum disorders (ASD) have classically been investigated in studies on imitation. Several observations suggested that unlike typical individuals who are able of copying the model's actions from the model's position, individuals with ASD tend to reenact the model's actions from their own egocentric perspective. Here, we performed two behavioral experiments to directly test the ability of ASD individuals to adopt another person's point of view. In Experiment 1, participants had to explicitly judge the left/right location of a target object in a scene from their own or the actor's point of view (visual perspective taking task). In Experiment 2, participants had to perform left/right judgments on front-facing or back-facing human body images (own body transformation task). Both tasks can be solved by mentally simulating one's own body motion to imagine oneself transforming into the position of another person (embodied simulation strategy), or by resorting to visual/spatial processes, such as mental object rotation (nonembodied strategy). Results of both experiments showed that individual with ASD solved the tasks mainly relying on a nonembodied strategy, whereas typical controls adopted an embodied strategy. Moreover, in the visual perspective taking task ASD participants had more difficulties than controls in inhibiting other-perspective when directed to keep one's own point of view. These findings suggested that, in social cognitive tasks, individuals with ASD do not resort to embodied simulation and have difficulties in cognitive control over self- and other-perspective. Autism Res 2015, 8: 454–466. © 2015 International Society for Autism Research, Wiley Periodicals, Inc. En ligne : http://dx.doi.org/10.1002/aur.1460 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=268 [article] “Put Myself Into Your Place”: Embodied Simulation and Perspective Taking in Autism Spectrum Disorders [Texte imprimé et/ou numérique] / Massimiliano CONSON, Auteur ; Elisabetta MAZZARELLA, Auteur ; Dalila ESPOSITO, Auteur ; Dario GROSSI, Auteur ; Nicoletta MARINO, Auteur ; Angelo MASSAGLI, Auteur ; Alessandro FROLLI, Auteur . - p.454-466. Langues : Anglais (eng) in Autism Research > 8-4 (August 2015) . - p.454-466 Mots-clés : autism spectrum disorders  high-functioning autism  perspective taking  embodied simulation  body representation  mental rotation Index. décimale : PER Périodiques Résumé : Embodied cognition theories hold that cognitive processes are grounded in bodily states. Embodied processes in autism spectrum disorders (ASD) have classically been investigated in studies on imitation. Several observations suggested that unlike typical individuals who are able of copying the model's actions from the model's position, individuals with ASD tend to reenact the model's actions from their own egocentric perspective. Here, we performed two behavioral experiments to directly test the ability of ASD individuals to adopt another person's point of view. In Experiment 1, participants had to explicitly judge the left/right location of a target object in a scene from their own or the actor's point of view (visual perspective taking task). In Experiment 2, participants had to perform left/right judgments on front-facing or back-facing human body images (own body transformation task). Both tasks can be solved by mentally simulating one's own body motion to imagine oneself transforming into the position of another person (embodied simulation strategy), or by resorting to visual/spatial processes, such as mental object rotation (nonembodied strategy). Results of both experiments showed that individual with ASD solved the tasks mainly relying on a nonembodied strategy, whereas typical controls adopted an embodied strategy. Moreover, in the visual perspective taking task ASD participants had more difficulties than controls in inhibiting other-perspective when directed to keep one's own point of view. These findings suggested that, in social cognitive tasks, individuals with ASD do not resort to embodied simulation and have difficulties in cognitive control over self- and other-perspective. Autism Res 2015, 8: 454–466. © 2015 International Society for Autism Research, Wiley Periodicals, Inc. En ligne : http://dx.doi.org/10.1002/aur.1460 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=268

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