Alipov N N, Izrail'tian I M, Lepetiukh O P, Sokolov A V
Fiziol Zh SSSR Im I M Sechenova. 1992 Oct;78(10):63-9.
Chronotropic and inotropic responses of the cat heart to cooling of the nn. vagi, raising of arterial pressure, stimulation of central ends of the nn. vagi, were different under different actions but stable in their character. This makes unreliable the estimation of reflex and tonic effects on the heart on the basis of heart rate alone.