Occupy special place electronic devices to simulate the electrical activity of the heart. Often such models are constructed to test various theories about the origin of the ECG.
The first attempt to model the ECG was made by Van der Pol and Van der Mark in 1928. Their model consisted of two relaxation oscillators, the atrium and ventricle imitated, and the delay line, which depicts the pathways of the heart. The model allows you to play only certain types of ECG, which, however, proved sufficient to the authors it has been suggested the possibility of such rhythm disturbance, which at the same time were not known to doctors.
E-cardiograms synthesizer, designed a group of Soviet engineers, physiologists and physicians, allowed to verify one of the theories of the origin of ECG.
For teaching and research vector cardiography propagation of electrical signals in the body several times creating three-dimensional models corresponding to the form of the human body. The model itself was made of plastic and has had numerous findings from the internal electrodes are immersed in a conductive solution, which was filled with models. The solution is submerged device that simulates a dipole, whose position within the model can be easily changed. With this model was to test the effect of geometric dimensions of the body in the shape of the ECG and to resolve some issues related to the selection of the best leads.
Models of the electrical activity of the heart can also be used in the development of diagnostic devices and to configure it. The simulator of various deviations from the normal ECG is used as a teaching tool will assist medical students.