in chronic experiments on conscious rabbits it was found by the method of hydrogen clearance and polarography that intravenous injections of ephedrine hydrochloride ( 1 and 5 mg/kg ) attenuate cerebral vessels reactions in vestibular disorders caused by sickness , reduce or prevent an increase of the blood flow in the brain as a whole or in individual cortical structures , exert no significant effect on oxygen tension in the brain .
C0234421
conscious
C0006104
brain