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- W3014185364 abstract "In this work we study the synchronization of Kuramoto oscillators driven by external forces in complex modular networks. The motivation is the neuronal dynamics that takes place during information processing in the neural cortex. The neuron organization is modular, with clusters associated to different functions and brain structures, and need to constantly respond to external stimuli. We study the behavior of forced Kuramoto oscillators where only a fraction of them is subjected to a periodic external force. When all oscillators receive the external drive the system always synchronize with the periodic force if its intensity is sufficiently large. We show that the conditions for global synchronization depend on the fraction of nodes being forced and on network topology, strength of internal couplings and intensity of external forcing. We develop numerical and analytical calculations for the critical force for global synchronization as a function of the fraction of forced oscillators. As an application we study the response of the electric junction textit{C. elegans} network to external stimuli using the partially forced Kuramoto model. Stimuli were applied to topological modules, to ganglia, specified by their anatomical localization, and to the functional groups (sensory and motoneurons). We found that topological modules do not contain purely anamotical groups or functional classes, and that stimulating different classes of neurons lead to very different responses, measured in terms of synchronization and phase velocity correlations. In all cases the modular structure hindered full synchronization, protecting the system from seizures. The responses to stimuli applied to topological and functional modules showed pronounced patterns of correlation or anti-correlation with other modules that were not observed when the stimulus was applied to a ganglion with mixed functional neurons." @default.
- W3014185364 created "2020-04-10" @default.
- W3014185364 creator A5070878185 @default.
- W3014185364 date "2021-06-22" @default.
- W3014185364 modified "2023-09-25" @default.
- W3014185364 title "Synchronization induced by external forces in modular networks" @default.
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- W3014185364 doi "https://doi.org/10.47749/t/unicamp.2020.1128824" @default.
- W3014185364 hasPublicationYear "2021" @default.
- W3014185364 type Work @default.