  Different types of synchronization states are found when non-linear chemical
oscillators are embedded into an active medium that interconnects the
oscillators but also contributes to the system dynamics. Using different
theoretical tools, we approach this problem in order to describe the transition
between two such synchronized states. Bifurcation and continuation analysis
provide a full description of the parameter space. Phase approximation modeling
allows the calculation of the oscillator periods and the bifurcation point.
