title: Phase synchronization of coupled bursting neurons and the generalized Kuramoto model.
abstract: Bursting neurons fire rapid sequences of action potential spikes followed by a quiescent period. The basic dynamical mechanism of bursting is the slow currents that modulate a fast spiking activity caused by rapid ionic currents. Minimal models of bursting neurons must include both effects. We considered one of these models and its relation with a generalized Kuramoto model, thanks to the definition of a geometrical phase for bursting and a corresponding frequency. We considered neuronal networks with different connection topologies and investigated the transition from a non-synchronized to a partially phase-synchronized state as the coupling strength is varied. The numerically determined critical coupling strength value for this transition to occur is compared with theoretical results valid for the generalized Kuramoto model.
authors.affiliation: Department of Physics, Federal University of Paraná, 81531-990 Curitiba, Paraná, Brazil.
authors.forename: F A S
authors.initials: FA
authors.lastname: Ferrari
authors.affiliation: Department of Physics, Federal University of Paraná, 81531-990 Curitiba, Paraná, Brazil. Electronic address: viana@fisica.ufpr.br.
authors.forename: R L
authors.initials: RL
authors.lastname: Viana
authors.affiliation: Department of Physics, Federal University of Paraná, 81531-990 Curitiba, Paraná, Brazil.
authors.forename: S R
authors.initials: SR
authors.lastname: Lopes
authors.affiliation: Institute of Neuroinformatics, University of Zürich and Eidgenössische Technische Hochschule Zürich, 8057 Zürich, Switzerland.
authors.forename: R
authors.initials: R
authors.lastname: Stoop
mesh_terms: D000200:Action Potentials; D008959:Models, Neurological; D009474:Neurons / Q000502:physiology*
keywords: Bursting neurons; Complex networks; Kuramoto model; Neuronal networks; Rulkov model; Synchronization