  Spatiotemporal chaos in the form of defect-mediated turbulence is known for
oscillators coupled by diffusion. Here we explore the same conditions that
produce defect turbulence, in an array of oscillators that are coupled through
the activator to a regular oscillator. We find that for very small coupling the
oscillators behave independent of each other and then there is a transition to
complete synchronization. On further increasing the coupling strength, there is
period doubling and a transition to chaotic behavior of each driven unit.
However the global behavior shows some ordering, and the period-two
oscillations become period-one with a further increase in the coupling
strength.
