التفاصيل البيبلوغرافية
| العنوان: |
Motor synergies: Evidence for a novel motor signature in autism spectrum disorder. |
| المؤلفون: |
Emanuele, M.1,2 (AUTHOR), Nazzaro, G.1,2 (AUTHOR), Marini, M.2 (AUTHOR), Veronesi, C.1 (AUTHOR), Boni, S.1 (AUTHOR), Polletta, G.1 (AUTHOR), D'Ausilio, A.1,2 (AUTHOR), Fadiga, L.1,2 (AUTHOR) luciano.fadiga@unife.it |
| المصدر: |
Cognition. Aug2021, Vol. 213, pN.PAG-N.PAG. 1p. |
| مصطلحات موضوعية: |
*AUTISM spectrum disorders, *AUTISTIC children, *GOAL (Psychology), *AUTOMATIC classification, *DEGREES of freedom, *GRIP strength, *RESEARCH, *RESEARCH methodology, *MEDICAL cooperation, *EVALUATION research, *COMPARATIVE studies, *COMMUNICATION, *SOCIAL skills, *KINEMATICS |
| مستخلص: |
In autism spectrum disorder (ASD), socio-communicative impairments and stereotypical behaviours are paralleled by sensorimotor deficits. Individuals with ASD show an altered selection of motor parameters, resulting in clumsy and fragmented actions. Here, we investigated inter-joint coordination and motor synergies as a potential substrate of motor control problems in ASD. Synergies enable co-controlling redundant motor degrees of freedom (DoF, e.g. joint angles, muscles) by mapping behavioural goals into a flexible and low-dimensional set of variables. This mechanism simplifies motor control and helps to find unambiguous solutions for motor tasks. In a reaching-grasping paradigm, children with ASD showed reduced coupling between DoF, which correlated with socio-communicative symptoms severity. Impaired synergies may help to frame well-established motor problems in ASD, including impaired motor sequencing and abnormal trial-to-trial motor variability. On the other hand, synergies also provide an effective and compact coding system of observed actions. Impaired synergies may thus jeopardize motor interaction by initiating bottom-up cascade effects, leading to pervasive impairments of social behaviour. Finally, we trained an automatic classification algorithm to distinguish between ASD and typically developing (TD) participants based on reaching-grasping kinematics. Classification accuracy reached up to 0.947. This result corroborates and expands previous accounts claiming that motor-based early recognition is feasible and effective in ASD. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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