“…This is for example the case of the van der Pol (VdP) system which was, first, introduced in order to describe triode oscillations in electrical circuits [1], and which was also later used in both the physical and biological sciences [2,3]. Similarly, the Bonhoeffer-van der Pol (BVdP) system was also designed to describe a class of excitable oscillatory systems including the Hodghin-Huxley model of the squid giant axon and have successfully used to reproduce the physiological states of nerve fiber namely, the resting state, active, refractory, enhanced and depressed states [3], and can be also adapted to describe action potential and normal cardiac pulse [4], to just name this few cases. Many other oscillators have been also introduced in the literature where the most popular are the basic Colpitts oscillator which is the combination of a transistor amplifier and LC circuits used to feedback the output signal [5,6], and the Chua oscillator [7,8].…”