RESPONSES OF RESISTANCE AND CAPACITANCE VESSELS AT VARIOUS FREQUENCY ELECTRICAL STIMULATION OF SYMPATHETIC NERVES

(1) The maximal reactions of cerebral resistance vessels arise at the stimulation frequency of 30 cps, the maximal reactions of capacitance vessels at the frequency of 10 cps. (2) Reactions of resistance vessels in the pulmonary lobe increase in the range of stimulation frequencies from 11-50 cps, maximal reactions of pulmonary capacitance vessels are observed at the frequency of 30-40 cps. (3) Reactions of resistance vessels situated below the abdominal aorta bifurcation increase progressively in the range of frequencies from 6-50 cps, the magnitude of capacitance vessel reaction reaching its maximum value at 20 cps. © 1969 Birkhäuser Verlag.