[Visuovestibular interaction in the regulation of body posture].

Visual stimulation can provoke egocentric illusory movements or changes of posture. Therefore, vestibulo-spinal tests were usually performed with eyes closed. A more sensible method seems to be the "visual stabilization", which is obtained by means of a box fixed on the head and with eyes open. In this manner, body instability due to vestibular disorders becomes more apparent.