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Coherence resonance versus synchronization in a periodically forced self-sustained system.

Research output: Contribution to journalJournal article


<mark>Journal publication date</mark>2/04/2002
<mark>Journal</mark>Physical Review E
Issue number4
Pages (from-to)041105
<mark>Original language</mark>English


A fundamental relationship between coherence resonance (CR) and phase synchronization in a self-sustained system in the presence of noise is addressed. A Van der Pol system synchronized by external forcing is taken as an example. It is shown that, in breaking down synchronization, applied noise creates a new ordered motion whose coherence depends resonantly on its intensity, i.e., CR occurs. The same is true for both types of synchronization, via phase locking and via suppression: only the mechanisms of CR differ. The result is valid for any order n:m of synchronization.