Strong Effects of Network Architecture in the Entrainment of Coupled Oscillator Systems

Details Strong Effects of Network Architecture in the Entrainment of Coupled Oscillator Systems Strong Effects of Network Architecture in the Entrainment of Coupled Oscillator Systems

2006-08-31

arxiv.org/abs/cond-mat/0608702v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

15 pages, 11 figures, RevTeX

Scientific paper

Entrainment of randomly coupled oscillator networks by periodic external forcing applied to a subset of elements is numerically and analytically investigated. For a large class of interaction functions, we find that the entrainment window with a tongue shape becomes exponentially narrow for networks with higher hierarchical organization. However, the entrainment is significantly facilitated if the networks are directionally biased, i.e., closer to the feedforward networks. Furthermore, we show that the networks with high entrainment ability can be constructed by evolutionary optimization processes. The neural network structure of the master clock of the circadian rhythm in mammals is discussed from the viewpoint of our results.

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