Atypical Time to Contact Estimation in Young Adults with Autism Spectrum Disorder / Michele VICOVARO ; Andrea SPOTO ; Luca BATTAGLINI ; Margherita ATTANASIO ; Marco VALENTI ; Monica MAZZA in Journal of Autism and Developmental Disorders, 55-5 (May 2025)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 55-5 (May 2025) . - p.1876-1889 Titre : Atypical Time to Contact Estimation in Young Adults with Autism Spectrum Disorder Type de document : Texte imprimé et/ou numérique Auteurs : Michele VICOVARO, Auteur ; Andrea SPOTO, Auteur ; Luca BATTAGLINI, Auteur ; Margherita ATTANASIO, Auteur ; Marco VALENTI, Auteur ; Monica MAZZA, Auteur Article en page(s) : p.1876-1889 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : Individuals with Autism Spectrum Disorder (ASD) present atypical sensory processing in the perception of moving stimuli and biological motion. The present study aims to explore the performance of young adults with ASD in a time to contact (TTC) estimation task involving social and non-social stimuli. TTC estimation involves extrapolating the trajectory of a moving target concealed by an occluder, based on the visible portion of its path, to predict the target?s arrival time at a specific position. Sixteen participants with a diagnosis of level-1 ASD (M = 19.2 years, SE = 0.54 years; 3 F, 13 M) and sixteen participants with TD (M = 22.3 years, SE = 0.44 years; 3 F, 13 M) took part in the study and underwent a TTC estimation task. The task presented two object types (a car and a point-light walker), different object speeds, occluder lengths, motion directions and motion congruency. For the car object, a larger overestimation of TTC emerged for ASDs than for TDs, whereas no difference between ASDs and TDs emerged for the point-light walker. ASDs exhibited a larger TTC overestimation for the car object than for the point-light walker, whereas no difference between object types emerged for TDs. Our results indicated an atypical TTC estimation process in young adults with ASD. Given its importance in daily life, future studies should further explore this skill. Significant effects that emerged from the analysis are discussed. En ligne : https://doi.org/10.1007/s10803-024-06352-z Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=554 [article] Atypical Time to Contact Estimation in Young Adults with Autism Spectrum Disorder [Texte imprimé et/ou numérique] / Michele VICOVARO, Auteur ; Andrea SPOTO, Auteur ; Luca BATTAGLINI, Auteur ; Margherita ATTANASIO, Auteur ; Marco VALENTI, Auteur ; Monica MAZZA, Auteur . - p.1876-1889. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 55-5 (May 2025) . - p.1876-1889 Index. décimale : PER Périodiques Résumé : Individuals with Autism Spectrum Disorder (ASD) present atypical sensory processing in the perception of moving stimuli and biological motion. The present study aims to explore the performance of young adults with ASD in a time to contact (TTC) estimation task involving social and non-social stimuli. TTC estimation involves extrapolating the trajectory of a moving target concealed by an occluder, based on the visible portion of its path, to predict the target?s arrival time at a specific position. Sixteen participants with a diagnosis of level-1 ASD (M = 19.2 years, SE = 0.54 years; 3 F, 13 M) and sixteen participants with TD (M = 22.3 years, SE = 0.44 years; 3 F, 13 M) took part in the study and underwent a TTC estimation task. The task presented two object types (a car and a point-light walker), different object speeds, occluder lengths, motion directions and motion congruency. For the car object, a larger overestimation of TTC emerged for ASDs than for TDs, whereas no difference between ASDs and TDs emerged for the point-light walker. ASDs exhibited a larger TTC overestimation for the car object than for the point-light walker, whereas no difference between object types emerged for TDs. Our results indicated an atypical TTC estimation process in young adults with ASD. Given its importance in daily life, future studies should further explore this skill. Significant effects that emerged from the analysis are discussed. En ligne : https://doi.org/10.1007/s10803-024-06352-z Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=554

In sync or not in sync? Illusory body ownership in autism spectrum disorder / Silvia GUERRA in Research in Autism Spectrum Disorders, 41-42 (September 2017)  

Public ISBD [article]  inResearch in Autism Spectrum Disorders > 41-42 (September 2017) . - p.1-7 Titre : In sync or not in sync? Illusory body ownership in autism spectrum disorder Type de document : Texte imprimé et/ou numérique Auteurs : Silvia GUERRA, Auteur ; Andrea SPOTO, Auteur ; Valentina PARMA, Auteur ; Elisa STRAULINO, Auteur ; Umberto CASTIELLO, Auteur Article en page(s) : p.1-7 Langues : Anglais (eng) Mots-clés : Autism spectrum disorders  Body ownership  Numbness illusion  Multisensory temporal integration  Tactile sensory processing Index. décimale : PER Périodiques Résumé : A fundamental aspect of self-consciousness is body ownership, which refers to the experience that our body and its parts belong to us and it is distinct from those of other persons. Body ownership depends on the integration of different sensory stimulations and it is crucial for the development of functional motor and social abilities, which are compromised in individuals with autism spectrum disorder (ASD). Here we examined the multisensory nature of body ownership in individuals with ASD by using a procedure based on tactile conflicts, namely the numbness illusion (NI). Method We induced an illusory feeling of numbness and ownership for another person’s finger by asking participants to hold their palm against another person’s palm and to stroke the two joined index fingers with the index and thumb of their other hand. Results As expected, when the agent self-strokes their finger, healthy participants do not perceive the NI if the stroking is performed asynchronously. Conversely, in individuals with ASD the illusion occurred with both synchronous and asynchronous self-stroking. Conclusions We contend that individuals with ASD are more vulnerable than controls to this illusory tactile experience and we discuss the findings in light of impaired perception of the temporal relationships between tactile and proprioceptive inputs. En ligne : https://doi.org/10.1016/j.rasd.2017.07.003 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=321 [article] In sync or not in sync? Illusory body ownership in autism spectrum disorder [Texte imprimé et/ou numérique] / Silvia GUERRA, Auteur ; Andrea SPOTO, Auteur ; Valentina PARMA, Auteur ; Elisa STRAULINO, Auteur ; Umberto CASTIELLO, Auteur . - p.1-7. Langues : Anglais (eng) in Research in Autism Spectrum Disorders > 41-42 (September 2017) . - p.1-7 Mots-clés : Autism spectrum disorders  Body ownership  Numbness illusion  Multisensory temporal integration  Tactile sensory processing Index. décimale : PER Périodiques Résumé : A fundamental aspect of self-consciousness is body ownership, which refers to the experience that our body and its parts belong to us and it is distinct from those of other persons. Body ownership depends on the integration of different sensory stimulations and it is crucial for the development of functional motor and social abilities, which are compromised in individuals with autism spectrum disorder (ASD). Here we examined the multisensory nature of body ownership in individuals with ASD by using a procedure based on tactile conflicts, namely the numbness illusion (NI). Method We induced an illusory feeling of numbness and ownership for another person’s finger by asking participants to hold their palm against another person’s palm and to stroke the two joined index fingers with the index and thumb of their other hand. Results As expected, when the agent self-strokes their finger, healthy participants do not perceive the NI if the stroking is performed asynchronously. Conversely, in individuals with ASD the illusion occurred with both synchronous and asynchronous self-stroking. Conclusions We contend that individuals with ASD are more vulnerable than controls to this illusory tactile experience and we discuss the findings in light of impaired perception of the temporal relationships between tactile and proprioceptive inputs. En ligne : https://doi.org/10.1016/j.rasd.2017.07.003 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=321

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