Facilitating sensorimotor integration via blocked practice underpins imitation learning of atypical biological kinematics in autism spectrum disorder / Nathan C. FOSTER in Autism, 24-6 (August 2020)  

Public ISBD [article]  inAutism > 24-6 (August 2020) . - p.1494-1505 Titre : Facilitating sensorimotor integration via blocked practice underpins imitation learning of atypical biological kinematics in autism spectrum disorder Type de document : Texte imprimé et/ou numérique Auteurs : Nathan C. FOSTER, Auteur ; Simon J. BENNETT, Auteur ; Joe CAUSER, Auteur ; Digby ELLIOTT, Auteur ; Geoffrey BIRD, Auteur ; Spencer J. HAYES, Auteur Article en page(s) : p.1494-1505 Langues : Anglais (eng) Mots-clés : autism spectrum disorder  biological motion kinematics  blocked practice  imitation  sensorimotor integration Index. décimale : PER Périodiques Résumé : Autistic people sometimes find it difficult to copy another person's movement accurately, especially if the movement is unfamiliar or novel (e.g. to use chop sticks). In this study, we found that autistic people were generally less accurate at copying a novel movement than non-autistic people. However, by making a small adjustment and asking people to copy this movement for a set number of attempts in a predictable manner, we showed that autistic people did successfully learn to copy a new movement. This is a very important finding for autistic people because rather than thinking they cannot copy new movements, all that needs to be considered is for parents/guardians, teachers and/or support workers to make a small adjustment so that learning occurs in a predictable manner for new skills to be successfully acquired through copying. The implications from this study are wide-ranging as copying (imitation) and motor learning are important developmental processes for autistic infants and children to acquire in order to interact within the world. Therefore, practising these behaviours in the most effective way can certainly help the developmental pathway. En ligne : http://dx.doi.org/10.1177/1362361320908104 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=428 [article] Facilitating sensorimotor integration via blocked practice underpins imitation learning of atypical biological kinematics in autism spectrum disorder [Texte imprimé et/ou numérique] / Nathan C. FOSTER, Auteur ; Simon J. BENNETT, Auteur ; Joe CAUSER, Auteur ; Digby ELLIOTT, Auteur ; Geoffrey BIRD, Auteur ; Spencer J. HAYES, Auteur . - p.1494-1505. Langues : Anglais (eng) in Autism > 24-6 (August 2020) . - p.1494-1505 Mots-clés : autism spectrum disorder  biological motion kinematics  blocked practice  imitation  sensorimotor integration Index. décimale : PER Périodiques Résumé : Autistic people sometimes find it difficult to copy another person's movement accurately, especially if the movement is unfamiliar or novel (e.g. to use chop sticks). In this study, we found that autistic people were generally less accurate at copying a novel movement than non-autistic people. However, by making a small adjustment and asking people to copy this movement for a set number of attempts in a predictable manner, we showed that autistic people did successfully learn to copy a new movement. This is a very important finding for autistic people because rather than thinking they cannot copy new movements, all that needs to be considered is for parents/guardians, teachers and/or support workers to make a small adjustment so that learning occurs in a predictable manner for new skills to be successfully acquired through copying. The implications from this study are wide-ranging as copying (imitation) and motor learning are important developmental processes for autistic infants and children to acquire in order to interact within the world. Therefore, practising these behaviours in the most effective way can certainly help the developmental pathway. En ligne : http://dx.doi.org/10.1177/1362361320908104 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=428

Getting Off to a Shaky Start: Specificity in Planning and Feedforward Control During Sensorimotor Learning in Autism Spectrum Disorder / Nathan C. FOSTER in Autism Research, 13-3 (March 2020)  

Public ISBD [article]  inAutism Research > 13-3 (March 2020) . - p.423-435 Titre : Getting Off to a Shaky Start: Specificity in Planning and Feedforward Control During Sensorimotor Learning in Autism Spectrum Disorder Type de document : Texte imprimé et/ou numérique Auteurs : Nathan C. FOSTER, Auteur ; Simon J. BENNETT, Auteur ; Joe CAUSER, Auteur ; Digby ELLIOTT, Auteur ; Geoffrey BIRD, Auteur ; Spencer J. HAYES, Auteur Article en page(s) : p.423-435 Langues : Anglais (eng) Mots-clés : autism  feedforward and feedback motor control  sensorimotor learning Index. décimale : PER Périodiques Résumé : Whilst autistic individuals develop new internal action models during sensorimotor learning, the acquired movements are executed less accurately and with greater variability. Such movement profiles are related to differences in sensorimotor integration and/or altered feedforward/feedback sensorimotor control. We investigated the processes underlying sensorimotor learning in autism by quantifying accuracy and variability, relative timing, and feedforward and feedback control. Although autistic individuals demonstrated significant sensorimotor learning across trials, which was facilitated by processing knowledge-of-results feedback, motor execution was less accurate than non-autistic individuals. Kinematic analysis indicated that autistic individuals showed significantly greater spatial variability at peak acceleration, but comparable spatial variability at peak velocity. These kinematic markers suggest that autistic movement profiles are driven by specific differences in sensorimotor control processes (i.e., internal action models) associated with planning and regulating the forces required to execute the movement. The reduction of variability at peak velocity indicates intact early feedback-based sensorimotor control in autism. Understanding how feedforward and feedback-based control processes operate provides an opportunity to explore how these control processes influence the acquisition of socio-motor actions in autism. Autism Res 2020, 13: 423-435. (c) 2019 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: Autistic adults successfully learned a new movement skill by physically practising it, and using feedback about how well they had done to become more accurate. When looking at the movements in detail, autistic adults were more variable than non-autistic adults when planning (e.g., how much force to use), and performing, the movement. These differences impact how autistic individuals learn different types of movement skills, which might influence how other behaviours (e.g., imitation) are acquired that support social interaction. En ligne : http://dx.doi.org/10.1002/aur.2214 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=421 [article] Getting Off to a Shaky Start: Specificity in Planning and Feedforward Control During Sensorimotor Learning in Autism Spectrum Disorder [Texte imprimé et/ou numérique] / Nathan C. FOSTER, Auteur ; Simon J. BENNETT, Auteur ; Joe CAUSER, Auteur ; Digby ELLIOTT, Auteur ; Geoffrey BIRD, Auteur ; Spencer J. HAYES, Auteur . - p.423-435. Langues : Anglais (eng) in Autism Research > 13-3 (March 2020) . - p.423-435 Mots-clés : autism  feedforward and feedback motor control  sensorimotor learning Index. décimale : PER Périodiques Résumé : Whilst autistic individuals develop new internal action models during sensorimotor learning, the acquired movements are executed less accurately and with greater variability. Such movement profiles are related to differences in sensorimotor integration and/or altered feedforward/feedback sensorimotor control. We investigated the processes underlying sensorimotor learning in autism by quantifying accuracy and variability, relative timing, and feedforward and feedback control. Although autistic individuals demonstrated significant sensorimotor learning across trials, which was facilitated by processing knowledge-of-results feedback, motor execution was less accurate than non-autistic individuals. Kinematic analysis indicated that autistic individuals showed significantly greater spatial variability at peak acceleration, but comparable spatial variability at peak velocity. These kinematic markers suggest that autistic movement profiles are driven by specific differences in sensorimotor control processes (i.e., internal action models) associated with planning and regulating the forces required to execute the movement. The reduction of variability at peak velocity indicates intact early feedback-based sensorimotor control in autism. Understanding how feedforward and feedback-based control processes operate provides an opportunity to explore how these control processes influence the acquisition of socio-motor actions in autism. Autism Res 2020, 13: 423-435. (c) 2019 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: Autistic adults successfully learned a new movement skill by physically practising it, and using feedback about how well they had done to become more accurate. When looking at the movements in detail, autistic adults were more variable than non-autistic adults when planning (e.g., how much force to use), and performing, the movement. These differences impact how autistic individuals learn different types of movement skills, which might influence how other behaviours (e.g., imitation) are acquired that support social interaction. En ligne : http://dx.doi.org/10.1002/aur.2214 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=421

Observational learning of atypical biological kinematics in autism / Nathan C. FOSTER in Autism Research, 16-9 (September 2023)  

Public ISBD [article]  inAutism Research > 16-9 (September 2023) . - p.1799-1810 Titre : Observational learning of atypical biological kinematics in autism Type de document : Texte imprimé et/ou numérique Auteurs : Nathan C. FOSTER, Auteur ; Simon J. BENNETT, Auteur ; Kiri PULLAR, Auteur ; Joe CAUSER, Auteur ; Cristina BECCHIO, Auteur ; Daniel P. CLOWES, Auteur ; Spencer J. HAYES, Auteur Article en page(s) : p.1799-1810 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : Abstract Observing and voluntarily imitating the biological kinematics displayed by a model underpins the acquisition of new motor skills via sensorimotor processes linking perception with action. Differences in voluntary imitation in autism could be related to sensorimotor processing activity during action-observation of biological motion, as well as how sensorimotor integration processing occurs across imitation attempts. Using an observational practice protocol, which minimized the active contribution of the peripheral sensorimotor system, we examined the contribution of sensorimotor processing during action-observation. The data showed that autistic participants imitated both the temporal duration and atypical kinematic profile of the observed movement with a similar level of accuracy as neurotypical participants. These findings suggest the lower-level perception-action processes responsible for encoding biological kinematics during the action-observation phase of imitation are operational in autism. As there was no task-specific engagement of the peripheral sensorimotor system during observational practice, imitation difficulties in autism are most likely underpinned by sensorimotor integration issues related to the processing of efferent and (re)afferent sensorimotor information during trial-to-trial motor execution. En ligne : https://doi.org/10.1002/aur.3002 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=510 [article] Observational learning of atypical biological kinematics in autism [Texte imprimé et/ou numérique] / Nathan C. FOSTER, Auteur ; Simon J. BENNETT, Auteur ; Kiri PULLAR, Auteur ; Joe CAUSER, Auteur ; Cristina BECCHIO, Auteur ; Daniel P. CLOWES, Auteur ; Spencer J. HAYES, Auteur . - p.1799-1810. Langues : Anglais (eng) in Autism Research > 16-9 (September 2023) . - p.1799-1810 Index. décimale : PER Périodiques Résumé : Abstract Observing and voluntarily imitating the biological kinematics displayed by a model underpins the acquisition of new motor skills via sensorimotor processes linking perception with action. Differences in voluntary imitation in autism could be related to sensorimotor processing activity during action-observation of biological motion, as well as how sensorimotor integration processing occurs across imitation attempts. Using an observational practice protocol, which minimized the active contribution of the peripheral sensorimotor system, we examined the contribution of sensorimotor processing during action-observation. The data showed that autistic participants imitated both the temporal duration and atypical kinematic profile of the observed movement with a similar level of accuracy as neurotypical participants. These findings suggest the lower-level perception-action processes responsible for encoding biological kinematics during the action-observation phase of imitation are operational in autism. As there was no task-specific engagement of the peripheral sensorimotor system during observational practice, imitation difficulties in autism are most likely underpinned by sensorimotor integration issues related to the processing of efferent and (re)afferent sensorimotor information during trial-to-trial motor execution. En ligne : https://doi.org/10.1002/aur.3002 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=510

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