The complex parameter space of a two-mode oscillator model

The parameter-space of a simple model that exhibits nontrivial spontaneous synchronization is thoroughly investigated. The model considers two-mode stochastic oscillators, coupled through emitted pulses by a simple optimization rule. Different types of collective responses are identified as a function of two relevant model parameters that are related to the optimization threshold and the periods of the two oscillation modes. It is shown that the investigated system exhibits partial synchronization under unexpectedly general conditions.