How do Individuals with Autism Plan Their Movements? / Cheryl M. GLAZEBROOK in Journal of Autism and Developmental Disorders, 38-1 (January 2008)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 38-1 (January 2008) . - p.114-126 Titre : How do Individuals with Autism Plan Their Movements? Type de document : Texte imprimé et/ou numérique Auteurs : Cheryl M. GLAZEBROOK, Auteur ; Peter SZATMARI, Auteur ; Digby ELLIOTT, Auteur Année de publication : 2008 Article en page(s) : p.114-126 Langues : Anglais (eng) Mots-clés : Motor-control Movement Planning Index. décimale : PER Périodiques Résumé : Two experiments investigated how persons with and without autism plan manual aiming movements when advance information is direct and when strategic planning is required. In Experiment 1 advance information about hand, direction, and/or movement amplitude was manipulated. Reaction times suggested both groups adopted a hierarchical pattern of movement planning. In Experiment 2, participants performed aiming movements to one of two targets that were the same or different size. Participants without autism varied the starting location in anticipation of specific target stimuli whereas participants with autism consistently selected the midpoint. Overall, individuals with autism used advance information to plan their movements when this information was direct. However, their performance became stereotyped when strategies were self-generated. En ligne : http://dx.doi.org/10.1007/s10803-007-0369-1 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=316 [article] How do Individuals with Autism Plan Their Movements? [Texte imprimé et/ou numérique] / Cheryl M. GLAZEBROOK, Auteur ; Peter SZATMARI, Auteur ; Digby ELLIOTT, Auteur . - 2008 . - p.114-126. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 38-1 (January 2008) . - p.114-126 Mots-clés : Motor-control Movement Planning Index. décimale : PER Périodiques Résumé : Two experiments investigated how persons with and without autism plan manual aiming movements when advance information is direct and when strategic planning is required. In Experiment 1 advance information about hand, direction, and/or movement amplitude was manipulated. Reaction times suggested both groups adopted a hierarchical pattern of movement planning. In Experiment 2, participants performed aiming movements to one of two targets that were the same or different size. Participants without autism varied the starting location in anticipation of specific target stimuli whereas participants with autism consistently selected the midpoint. Overall, individuals with autism used advance information to plan their movements when this information was direct. However, their performance became stereotyped when strategies were self-generated. En ligne : http://dx.doi.org/10.1007/s10803-007-0369-1 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=316

Movement Planning and Reprogramming in Individuals With Autism / Natasha NAZARALI in Journal of Autism and Developmental Disorders, 39-10 (October 2009)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 39-10 (October 2009) . - p.1401-1411 Titre : Movement Planning and Reprogramming in Individuals With Autism Type de document : Texte imprimé et/ou numérique Auteurs : Natasha NAZARALI, Auteur ; Cheryl M. GLAZEBROOK, Auteur ; Digby ELLIOTT, Auteur Année de publication : 2009 Article en page(s) : p.1401-1411 Langues : Anglais (eng) Mots-clés : Aiming Manual Motor Reaching Index. décimale : PER Périodiques Résumé : Two experiments explored how individuals with and without autism plan and reprogram movements. Participants were given partial or complete information regarding the location of the upcoming manual movement. In Experiment 1, direct information specified the hand or direction of the upcoming movement. These results replicated previous reports that participants with autism utilize advance information to prepare their movements in the same manner as their chronologically age matched peers. Experiment 2 examined how individuals respond to an unexpected change in the movement requirements. Participants received advance information about the hand and direction of the upcoming movement. On 20% of the trials participants needed to adjust either the hand or direction they had prepared. Overall, the individuals with autism had difficulty reprogramming already planned movements, particularly if a different effector was required. En ligne : http://dx.doi.org/10.1007/s10803-009-0756-x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=839 [article] Movement Planning and Reprogramming in Individuals With Autism [Texte imprimé et/ou numérique] / Natasha NAZARALI, Auteur ; Cheryl M. GLAZEBROOK, Auteur ; Digby ELLIOTT, Auteur . - 2009 . - p.1401-1411. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 39-10 (October 2009) . - p.1401-1411 Mots-clés : Aiming Manual Motor Reaching Index. décimale : PER Périodiques Résumé : Two experiments explored how individuals with and without autism plan and reprogram movements. Participants were given partial or complete information regarding the location of the upcoming manual movement. In Experiment 1, direct information specified the hand or direction of the upcoming movement. These results replicated previous reports that participants with autism utilize advance information to prepare their movements in the same manner as their chronologically age matched peers. Experiment 2 examined how individuals respond to an unexpected change in the movement requirements. Participants received advance information about the hand and direction of the upcoming movement. On 20% of the trials participants needed to adjust either the hand or direction they had prepared. Overall, the individuals with autism had difficulty reprogramming already planned movements, particularly if a different effector was required. En ligne : http://dx.doi.org/10.1007/s10803-009-0756-x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=839

The role of vision for online control of manual aiming movements in persons with autism spectrum disorders / Cheryl M. GLAZEBROOK in Autism, 13-4 (July 2009)  

Public ISBD [article]  inAutism > 13-4 (July 2009) . - p.411-433 Titre : The role of vision for online control of manual aiming movements in persons with autism spectrum disorders Type de document : Texte imprimé et/ou numérique Auteurs : Cheryl M. GLAZEBROOK, Auteur ; Digby ELLIOTT, Auteur ; David GONZALEZ, Auteur ; Steve HANSEN, Auteur Année de publication : 2009 Article en page(s) : p.411-433 Langues : Anglais (eng) Mots-clés : eye-hand-coordination reaching saccade visual-feedback Index. décimale : PER Périodiques Résumé : Recent studies suggest motor skills are not entirely spared in individuals with an autism spectrum disorder (ASD). Previous reports demonstrated that young adults with ASD were able to land accurately on a target despite increased temporal and spatial variability during their movement. This study explored how a group of adolescents and young adults with an ASD used vision and proprioception to land successfully on one of two targets. Participants performed eye movements and/or manual reaching movements, either with or without vision. Although eye movements were executed in a similar timeframe, participants with ASD took longer to plan and execute manual reaching movements. They also exhibited significantly greater variability during eye and hand movements, but were able to land on the target regardless of the vision condition. In general, individuals with autism used vision and proprioception. However, they took considerably more time to perform movements that required greater visual-proprioceptive integration. En ligne : http://dx.doi.org/10.1177/1362361309105659 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=768 [article] The role of vision for online control of manual aiming movements in persons with autism spectrum disorders [Texte imprimé et/ou numérique] / Cheryl M. GLAZEBROOK, Auteur ; Digby ELLIOTT, Auteur ; David GONZALEZ, Auteur ; Steve HANSEN, Auteur . - 2009 . - p.411-433. Langues : Anglais (eng) in Autism > 13-4 (July 2009) . - p.411-433 Mots-clés : eye-hand-coordination reaching saccade visual-feedback Index. décimale : PER Périodiques Résumé : Recent studies suggest motor skills are not entirely spared in individuals with an autism spectrum disorder (ASD). Previous reports demonstrated that young adults with ASD were able to land accurately on a target despite increased temporal and spatial variability during their movement. This study explored how a group of adolescents and young adults with an ASD used vision and proprioception to land successfully on one of two targets. Participants performed eye movements and/or manual reaching movements, either with or without vision. Although eye movements were executed in a similar timeframe, participants with ASD took longer to plan and execute manual reaching movements. They also exhibited significantly greater variability during eye and hand movements, but were able to land on the target regardless of the vision condition. In general, individuals with autism used vision and proprioception. However, they took considerably more time to perform movements that required greater visual-proprioceptive integration. En ligne : http://dx.doi.org/10.1177/1362361309105659 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=768

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