Enhanced response of the regular networks to local signals in presence of a fast impurity

Details Enhanced response of the regular networks to local signals in presence of a fast impurity Enhanced response of the regular networks to local signals in presence of a fast impurity

2012-03-14

arxiv.org/abs/1203.3017v1

Nonlinear Sciences

Adaptation and Self-Organizing Systems

6 pages, 5 figures, arXiv admin note: substantial text overlap with arXiv:1108.4605

Scientific paper

We consider an array of inductively coupled Josephson junctions with a fast impurity (a junction with a smaller value of critical current), and study the consequences of imposing a small amplitude periodic signal at some point in the array. We find that when external signal is imposed at the impurity, the response of the array is boosted and a small amplitude signal can be detected throughout the array. When the signal is imposed elsewhere, minor effects is seen on the dynamics of the array. The same results have been also seen in presence of a single fast spiking neuron in a chain of diffusively coupled FitzHugh-Nagumo neurons.

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