title: Chaotic phase synchronization in small-world networks of bursting neurons.
abstract: We investigate the chaotic phase synchronization in a system of coupled bursting neurons in small-world networks. A transition to mutual phase synchronization takes place on the bursting time scale of coupled oscillators, while on the spiking time scale, they behave asynchronously. It is shown that phase synchronization is largely facilitated by a large fraction of shortcuts, but saturates when it exceeds a critical value. We also study the external chaotic phase synchronization of bursting oscillators in the small-world network by a periodic driving signal applied to a single neuron. It is demonstrated that there exists an optimal small-world topology, resulting in the largest peak value of frequency locking interval in the parameter plane, where bursting synchronization is maintained, even with the external driving. The width of this interval increases with the driving amplitude, but decrease rapidly with the network size. We infer that the externally applied driving parameters outside the frequency locking region can effectively suppress pathologically synchronized rhythms of bursting neurons in the brain.
authors: School of Electrical Engineering and Automation, Tianjin University, Tianjin 300072, People's Republic of China.
authors: Haitao
authors: H
authors: Yu
authors: Jiang
authors: J
authors: Wang
authors: Bin
authors: B
authors: Deng
authors: Xile
authors: X
authors: Wei
authors: Y K
authors: YK
authors: Wong
authors: W L
authors: WL
authors: Chan
authors: K M
authors: KM
authors: Tsang
authors: Ziqi
authors: Z
authors: Yu
mesh_terms: D000200:Action Potentials / Q000502:physiology*; D058407:Electroencephalography Phase Synchronization; D009415:Nerve Net / Q000502:physiology*; D009474:Neurons / Q000502:physiology*; D017711:Nonlinear Dynamics; D013997:Time Factors