Influence of gait mode and body orientation on following a walking avatar |
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Affiliation: | 1. IRFSS, Croix-Rouge française - 25, rue Sismondi, 87000 Limoges, France;2. The Lebanese University, Faculty of Public Health (section 2), Department of Physiotherapy, Beyrouth, Lebanon;3. UMR 5549 CERCO CNRS University of Toulouse, UPS, 118 route de Narbonne, 31000 Toulouse, France |
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Abstract: | Regulating distance with a moving object or person is a key component of human movement and of skillful interpersonal coordination. The current set of experiments aimed to assess the role of gait mode and body orientation on distance regulation using a cyclical locomotor tracking task in which participants followed a virtual leader. In the first experiment, participants moved in the backward-forward direction while the body orientation of the virtual leader was manipulated (i.e., facing towards, or away from the follower), hence imposing an incongruence in gait mode between leader and follower. Distance regulation was spatially less accurate when followers walked backwards. Additionally, a clear trade-off was found between spatial leader-follower accuracy and temporal synchrony. Any perceptual effects were overshadowed by the effect of one’s gait mode. In the second experiment we examined lateral following. The results suggested that lateral following was also constrained strongly by perceptual information presented by the leader. Together, these findings demonstrated how locomotor tracking depends on gait mode, but also on the body orientation of whoever is being followed. |
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Keywords: | Complex systems Interactive sports Shadowing Mirroring Whole-body movement Joint action |
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