Influence of stochastic delays in Seidel-Herzel model of human   cardiorespiratory system
  Experiments that discuss influence of noise to H. Seidel and H. Herzel dynamics model of human cardiovascular system are presented. Noise is introduced by considering stochastic delays in response to the sympathetic system. It appears that in the presence of the noise 10 s heart rate oscillations connected with Mayer waves are preserved. Moreover the heart rate becomes approximately normally distributed (even in unstable phase of original Seidel Herzel model), similarly like the real RR intervals data. 
Aleksandra Dudkowska, Danuta Makowiec