Clinical-neurological and Bioplasm nls-examinations data was analyzed in 203 patients. Vertebrobasilar arterial system stroke was diagnosed in 153 patients; patients age from 23 to 85 years. Mature men is the most affected group (30.1%). Control group consisted of 50 patients with no organic changes in brain: Bioplasm nls health analyzer-data of their examination was taken as a basis for cerebellum and brain stem Bioplasm nls -anatomy study.