CENTRAL NERVOUS CONTROL OF RHYTHMIC VARIATIONS OF BLOOD PRESSURE

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Abstract
Nonasphyxial rhythmic variations of the blood pressure were studied in dogs under chlorolose and urethane anesthesia. Electrical stimulation of the anterior sigmoid and coronal gyri produced an increase of the blood pressure waves. Stimulation of the anterior composite gyrus usually showed a diminution of the amplitude of these waves. The results of ablation showed that the cortical control of these waves lies in the frontal lobes close to the sensory-motor area. The expts. with the removal of the hypothalamus or intercolliculo- mesencephalic brain stem section indicated that the mechanism regulating the nonasphyxial blood pressure waves is located in hypothalamus.

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