Stochastic Stimulation-Induced Organization In A Network Of Chaotic Units With Variable Connection Strengths

We investigate the influence of stochastic stimulations on a network of globally coupled logistic maps with temporally varying connection strengths. The network, for a fixed map parameter, exhibits a kind of organized inter-unit connectivity within certain parameter regimes of the coupling strength and the stochastic stimulation strength. Within these regimes, units separate into two groups whose distinguishing feature is that the first group possesses many outwardly directed connections to the second group, while the second group possesses only a few outwardly directed connections to the first. We show that such organization can be induced by stochastic stimulations.