Adaptabilité et flexibilité des mécanismes d'intégration sensorielle lors de perturbations propioceptives du contrôle postural

TL;DRAbstract

Human being continuously has to adapt to modifications of environmental constraints, particularly to preserve balance efficiently. To achieve this aim, the central nervous system permanently estimates the relevance of sensory infonnation (mainly visual, vestibular and somatosensory infonnation). The way, in which infonnation from sens ory inputs are integrated, selected and/or weighted according to their reliability, requires to be cleared up. More particularly, we wished to investigate the singular character of proprioceptive integration: the various somatensory receptors are located on the whole postural chain and indicate modifications at the muscular or articular level. The first objective consisted in understanding how sens ory integration mechanisms can be adapted, during proprioceptive disturbances of postural control, evoked by muscle-tendon vibration. Experimental results showed that to experience postural consequences of this kind of perturbation and/or to be able to perceive

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