Analog computer simulates heart response to nerve stimulation

Because the heart is a dynamic system whose rate changes with stimuli and time, it lends itself well to study by means of the analog computer. Experiments have been made on both the steady-state and dynamic response of the heart to vagal and sympathetic nerve stimulation The human heart is a very complex muscle-pump system which is controlled from several different areas of the body and by many factors. Because of the experimental difficulties and the complexity of the system itself, no complete mechanical or electrical model of the system has been constructed.