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Published on: November 18, 2015
Information flow in heterogeneously interacting systems
Yutaka Yamaguti1, Ichiro Tsuda1, Yoichiro Takahashi2
1Research Institute for Electronic Science, Hokkaido University, N12W7, Kita-ku, Sapporo, 060-0812 Japan ; Research Center for Integrative Mathematics, Hokkaido University, N12W7, Kita-ku, Sapporo, 060-0812 Japan.
Abstract:
Motivated by studies on the dynamics of heterogeneously interacting systems in neocortical neural networks, we studied heterogeneously-coupled chaotic systems. We used information-theoretic measures to investigate directions of information flow in heterogeneously coupled Rössler systems, which we selected as a typical chaotic system. In bi-directionally coupled systems, spontaneous and irregular switchings of the phase difference between two chaotic oscillators were observed. The direction of information transmission spontaneously switched in an intermittent manner, depending on the phase difference between the two systems. When two further oscillatory inputs are added to the coupled systems, this system dynamically selects one of the two inputs by synchronizing, selection depending on the internal phase differences between the two systems. These results indicate that the effective direction of information transmission dynamically changes, induced by a switching of phase differences between the two systems.
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