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Emergence of coupling-induced oscillations and broken symmetries in heterogeneously driven nonlinear reaction networks.

ABSTRACT: Many natural systems including the brain comprise coupled elements that are stimulated non-uniformly. In this paper we show that heterogeneously driven networks of excitatory-inhibitory units exhibit a diverse range of collective phenomena, including the appearance of spontaneous oscillations upon coupling quiescent elements. On varying the coupling strength a previously unreported transition is seen wherein the symmetries of the synchronization patterns in the stimulated and unstimulated groups undergo mutual exchange. The system also exhibits coexisting chaotic and non-chaotic attractors - a result that may be of interest in connection to earlier reports of varying degrees of chaoticity in the brain.

SUBMITTER: Sreenivasan V

PROVIDER: S-EPMC5431650 | biostudies-literature | 2017 May

REPOSITORIES: biostudies-literature

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Emergence of coupling-induced oscillations and broken symmetries in heterogeneously driven nonlinear reaction networks.

Sreenivasan Varsha V Menon Shakti N SN Sinha Sitabhra S

Scientific reports 20170509 1

Many natural systems including the brain comprise coupled elements that are stimulated non-uniformly. In this paper we show that heterogeneously driven networks of excitatory-inhibitory units exhibit a diverse range of collective phenomena, including the appearance of spontaneous oscillations upon coupling quiescent elements. On varying the coupling strength a previously unreported transition is seen wherein the symmetries of the synchronization patterns in the stimulated and unstimulated groups ...[more]

PMID: 28487568

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