Abstract
The effects of electrical stimulation of the carotid sinus nerve on the shivering, blood pressure and respiration in rabbits were studied.
According to the pulse duration or intensity of rectangular wave, the stimula-tion of the carotid sinus nerve provoked three types of responses: Type I, inhibition of shivering accompanied by the rise of blood pressure, which was due to the chemosensory activity; Typo II, increase of shivering with extreme fall of blood pressure, being attributed to barosensory excitation; and Type III, inhibition of shivering and the fall of blood pressure. This type of responses was considered to be the intermediate between Types I and II. Respiration always increased.
The authors confirmed that the shivering was regulated excitatively by the carotid baroreceptor, which was reported previously in this journal, and inhibitively by chemoreceptor.
