Journal
EUROPEAN PHYSICAL JOURNAL B
Volume 85, Issue 6, Pages -Publisher
SPRINGER
DOI: 10.1140/epjb/e2012-30310-1
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Funding
- FAPESP of Brazil [2010/50614-7, 2011/50151-0, 11/03631-6]
- NNSF of China [11175150, 10975053, 11135001]
- CNPq of Brazil [306227/2011-8, 560031/2010-6]
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [11/03631-6] Funding Source: FAPESP
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In this paper, we study the signal amplification of coupled active rotators with phase-shifted coupling. We find that the system's response to the external subthreshold signal can be significantly affected by each of the two types of phase-shifted couplings: identical and non-identical phase-shifted couplings. Moreover, through both theoretical analysis and numerical simulations, we have figured out the optimal phase shift, at which the largest signal amplification is generated. These results show that the phase-shifted coupling plays an important role in regulating the system's response to the subthreshold signal.
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