[Vestibulo-oculomotor reactions during immersion hypokinesia].

The results of studying the spontaneous oculomotor responses and those induced by vestibular and visual stimulation in 30 test subjects exposed to a 3-day dry immersion are presented. The subjects were tested every day under conditions of free diving and during additional tactile-proprioceptive, optokinetic and vestibulo-optokinetic stimulation. It is indicated that an exposure to immersion is inherent in an increased amplitude and rate of spontaneous floating movements of the eyes and in 30 percent of cases in: developing of spontaneous nystagmus; decreasing of an accuracy of fixed turns and tracking; facilitating of oculomotor responses during optokinetic and optovestibular stimulation. When used an additional support, on Day 0-1 after optokinetic and optovestibular stimulation on Days 2-3 of immersion the tested oculomotor responses were improved.