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Stochastic switching in delay-coupled oscillators
Adaptation and Self-Organizing Systems · Submitted 1 Sep 2014
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim The number of stable periodic orbits scales with the roundtrip delay time and coupling strength, but the noisy system visits only a fraction of the orbits, which scales with the square root of the delay time and is independent of the coupling strength.
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The abstract, sentence by sentence
A delay is known to induce multistability in periodic systems. Under influence of noise, coupled oscillators can switch between coexistent orbits with different frequencies and different oscillation patterns. For coupled phase oscillators we reduce the delay system to a non-delayed Langevin equation, which allows us to analytically compute the distribution of frequencies, and their corresponding residence times. The number of stable periodic orbits scales with the roundtrip delay time and coupling strength, but the noisy system visits only a fraction of the orbits, which scales with the square root of the delay time and is independent of the coupling strength. In contrast, the residence time in the different orbits is mainly determined by the coupling strength and the number of oscillators, and only weakly dependent on the coupling delay. Finally we investigate the effect of a detuning between the oscillators. We demonstrate the generality of our results with delay-coupled FitzHugh-Nagumo oscillators.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | A delay is known to induce multistability in periodic systems. | background 1.00 | 0.05 | 0.03 | asserted 1.00 |
| s1 | Under influence of noise, coupled oscillators can switch between coexistent orbits with different frequencies and different oscillation patterns. | background 0.71 | 0.19 | 0.09 | asserted 0.64 |
| s2 | For coupled phase oscillators we reduce the delay system to a non-delayed Langevin equation, which allows us to analytically compute the distribution of frequencies, and their corresponding residence times. | method 0.91 | 0.95 | 0.13 | asserted 1.00 |
| s3 | The number of stable periodic orbits scales with the roundtrip delay time and coupling strength, but the noisy system visits only a fraction of the orbits, which scales with the square root of the delay time and is independent of the coupling strength. | result 1.00 | 0.89 | 0.48 | asserted 1.00 |
| s4 | In contrast, the residence time in the different orbits is mainly determined by the coupling strength and the number of oscillators, and only weakly dependent on the coupling delay. | result 1.00 | 0.90 | 0.23 | asserted 1.00 |
| s5 | Finally we investigate the effect of a detuning between the oscillators. | contribution 0.96 | 0.81 | 0.02 | unclear 0.84 |
| s6 | We demonstrate the generality of our results with delay-coupled FitzHugh-Nagumo oscillators. | contribution 0.69 | 0.94 | 0.07 | asserted 1.00 |
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The paper
Original abstract
A delay is known to induce multistability in periodic systems. Under influence of noise, coupled oscillators can switch between coexistent orbits with different frequencies and different oscillation patterns. For coupled phase oscillators we reduce the delay system to a non-delayed Langevin equation, which allows us to analytically compute the distribution of frequencies, and their corresponding residence times. The number of stable periodic orbits scales with the roundtrip delay time and coupling strength, but the noisy system visits only a fraction of the orbits, which scales with the square root of the delay time and is independent of the coupling strength. In contrast, the residence time in the different orbits is mainly determined by the coupling strength and the number of oscillators, and only weakly dependent on the coupling delay. Finally we investigate the effect of a detuning between the oscillators. We demonstrate the generality of our results with delay-coupled FitzHugh-Nagumo oscillators.
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