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Approche dynamique de l'apprentissage de coordinations posturales

Abstract : The dynamical perspective on motor learning provides numerous theoretical principles which define the links of interdependency between pre-existing coordination and a new learned coordination mode. Although these principles are supposed to be general, they are principally based on bi-manual system studies and were assessed almost exclusively in this context. In this thesis, we studied the interaction between pre-existing modes and learning a new pattern in the different framework of the postural system. The ankle-hip coordination dynamics was investigated at various moments of the learning process and in two tasks of distinct nature. In the first task, the goal of the participants bore no relation with the ankle-hip coordination, which emerged spontaneously. In accordance with theoretical predictions from the dynamical perspective, we found a change from initial coordination patterns, in-phase and anti-phase, toward the learned pattern. For the second task, different modes of ankle-hip coordination were required, and constituted the goal of the task. In that case, the consequence of learning the new pattern was an improvement of every required pattern. This result presents no identifiable correspondence with the spontaneous coordination dynamics (revealed in the first task), and diverges from experimental observations obtained with bi-manual coordination. The theoretical and functional reasons underlying these divergences are discussed.
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https://tel.archives-ouvertes.fr/tel-00128845
Contributor : Elise Faugloire <>
Submitted on : Friday, February 2, 2007 - 5:40:51 PM
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Elise Faugloire. Approche dynamique de l'apprentissage de coordinations posturales. Sciences de l'Homme et Société. Université Paris Sud - Paris XI, 2005. Français. ⟨tel-00128845⟩

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