[Rheographic studies in the diagnosis of vertebrobasilar syndromes].

The authors report the results of investigations of 33 healthy subjects and 33 patients with manifestations of intracranial circulatory disturbances in the vascularization area of the vertebrobasilar system. Type II rheography was used. All curves from the vertebral, vertebromastoid and frontomastoid leads were averaged. No significance of asymmetry between the right and left sides was demonstrated in attempts at differentiation between patients and controls. Mosaicisim of changes of curves during head turning was observed in 15% of controls and 55% of patients.