A nonlinear electrical circuit is proposed as a basic cell for modeling FitzHugh-Nagumo neurons with a modified excitability. Depending on initial conditions and parameters experiments show various dynamics including stability with excitation, bistability and oscillations. Moreover, we present an electrical circuit which will be used to realize a unidirectional coupling between two cells, mimicking chemical synaptic coupling. Finally, we characterize the frequency-doubling and the chaotic dynamics depending on the coupling strength in a master-slave configuration. In all experiments, we stress the influence of the coupling strength on the control of the slave neuron.
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