Divide and conquer: resonance induced by competitive interactions

Details Divide and conquer: resonance induced by competitive interactions Divide and conquer: resonance induced by competitive interactions

2008-05-29

arxiv.org/abs/0805.4501v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

Scientific paper

10.1140/epjb/e2008-00437-9

We study an Ising model in a network with disorder induced by the presence of both attractive and repulsive links. This system is subjected to a subthreshold signal, and the goal is to see how the response is enhanced for a given fraction of repulsive links. This can model a network of spin-like neurons with excitatory and inhibitory couplings. By means of numerical simulations and analytical calculations we find that there is an optimal probability, such that the coherent response is maximal.

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