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  • Title: [Response of the ventricular system of the brain to anti-orthostasis and occlusion of the jugular veins].
    Author: Sokolov VI.
    Journal: Kosm Biol Aviakosm Med; 1984; 18(4):66-9. PubMed ID: 6482364.
    Abstract:
    Twenty test subjects were subdivided into two groups with respect to the reactions of brain ventricles to a preliminary head-down test (-30 degrees). Group 1 consisted of subjects who showed ventricular enlargement, headache and nausea; Group 2 included subjects without these reactions. The test subjects were also exposed to tests with neck vein occlusion. The first (continuous) test was performed at +40 mm Hg for 5 min; the second (step) test was carried out from +10 to +50 mm Hg for 2 min at each step. The results obtained demonstrate that an inadequate venous outflow from the cranial cavity influences brain ventricles; the data also give evidence that changes in compensatory mechanisms can be detected using occlusion tests.
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