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Anticipatory postural adjustments during joint action coordination

Abstract : There is a current claim that humans are able to effortlessly detect others’ hidden mental state by simply observing their movements and transforming the visual input into motor knowledge to predict behaviour. Using a classical paradigm quantifying motor predictions, we tested the role of vision feedback during a reach and load-lifting task performed either alone or with the help of a partner. Wrist flexor and extensor muscle activities were recorded on the supporting hand. Early muscle changes preventing limb instabilities when participants performed the task by themselves revealed the contribution of the visual input in postural anticipation. When the partner performed the unloading, a condition mimicking a split-brain situation, motor prediction followed a pattern evolving along the task course and changing with the integration of successive somatosensory feedback. Our findings demonstrate that during social behaviour, in addition to self-motor representations, individuals cooperate by continuously integrating sensory signals from various sources.
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https://hal-univ-bourgogne.archives-ouvertes.fr/hal-02319174
Contributeur : Caps - Université de Bourgogne <>
Soumis le : jeudi 17 octobre 2019 - 17:01:39
Dernière modification le : samedi 19 octobre 2019 - 01:18:13

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Anaelli A. Nogueira-Campos, P. Hilt, L. Fadiga, C. Veronesi, A. D’ausilio, et al.. Anticipatory postural adjustments during joint action coordination. Scientific Reports, Nature Publishing Group, 2019, 9 (1), ⟨10.1038/s41598-019-48758-1⟩. ⟨hal-02319174⟩

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