Cerebral and autonomic aspects of labile hypertension

: EEG, central hemodynamic parameters and the emotional syndrome were investigated in 55 patients with labile hypertension. Two cerebrovegetative patterns corresponding to different degrees of cortical activation and different mechanisms controlling arterial blood pressure and anxiety levels were identified. As the two groups of patients did not differ in terms of age or duration of the disease, those could not be attributed to different stages of the disease, suggesting rather that sympathetic and parasympathetic vegetative nervous components may be making different contributions to the formation of hemodynamic type.