BURST-ENHANCED SYNCHRONIZATION IN AN ARRAY OF NOISY COUPLED NEURONS

Stochastic phase synchronization is studied in an array of coupled neurons that are capable of exhibiting diverse bursting behaviors as a system parameter is tuned. It is found that synchronization occurs for lower coupling constants when the neurons are initially in a bursting state. Neurons not initially in a bursting state begin to exhibit bursting behavior concurrently with the onset of synchronization. The system passes through various synchronization regimes as the coupling constant is increased, with the number of spikes per burst increasing in each window of synchronization. In addition, spatial organization, measured by the distribution of local phase differences, is observed during the synchronization windows.

[1]  F Moss,et al.  Noise-induced spiral waves in astrocyte syncytia show evidence of self-organized criticality. , 1998, Journal of neurophysiology.

[2]  H. Haas,et al.  Synchronized bursting of CA1 hippocampal pyramidal cells in the absence of synaptic transmission , 1982, Nature.

[3]  J. Kurths,et al.  From Phase to Lag Synchronization in Coupled Chaotic Oscillators , 1997 .

[4]  G. Ermentrout,et al.  Gamma rhythms and beta rhythms have different synchronization properties. , 2000, Proceedings of the National Academy of Sciences of the United States of America.

[5]  J. García-Sancho,et al.  Mechanisms for Synchronous Calcium Oscillations in Cultured Rat Cerebellar Neurons , 1996, The European journal of neuroscience.

[6]  G B Ermentrout,et al.  Fine structure of neural spiking and synchronization in the presence of conduction delays. , 1998, Proceedings of the National Academy of Sciences of the United States of America.

[7]  R. D. Traub,et al.  Penicillin-induced epileptiform activity in the hippocampal slice: A model of synchronization of CA3 pyramidal cell bursting , 1981, Neuroscience.

[8]  J. Sander Transcultural Aspects of Epilepsy: A Forgotten Issue? , 2003 .

[9]  R. Traub,et al.  A mechanism for generation of long-range synchronous fast oscillations in the cortex , 1996, Nature.

[10]  P. Fries,et al.  Is synchronized neuronal gamma activity relevant for selective attention? , 2003, Brain Research Reviews.

[11]  R. Desimone,et al.  Modulation of Oscillatory Neuronal Synchronization by Selective Visual Attention , 2001, Science.

[12]  Frank Moss,et al.  The Nonlinear Dynamics of the crayfish mechanoreceptor System , 2003, Int. J. Bifurc. Chaos.

[13]  Jürgen Kurths,et al.  Synchronization: Phase locking and frequency entrainment , 2001 .

[14]  S. Schiff,et al.  Decreased Neuronal Synchronization during Experimental Seizures , 2002, The Journal of Neuroscience.

[15]  H A Braun,et al.  Phase-space structure of a thermoreceptor. , 2000, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics.

[16]  Y. Yaari,et al.  Role of intrinsic burst firing, potassium accumulation, and electrical coupling in the elevated potassium model of hippocampal epilepsy. , 1997, Journal of neurophysiology.

[17]  Tomoki Fukai,et al.  Gamma Rhythmic Bursts: Coherence Control in Networks of Cortical Pyramidal Neurons , 2003, Neural Computation.

[18]  Alexander B. Neiman,et al.  Noise-Enhanced Phase Synchronization in Excitable Media , 1999 .

[19]  F Moss,et al.  Synchronization of hyperexcitable systems with phase-repulsive coupling. , 2001, Physical review. E, Statistical, nonlinear, and soft matter physics.

[20]  Frank Moss,et al.  Homoclinic bifurcation in a Hodgkin-Huxley model of thermally sensitive neurons. , 2000, Chaos.

[21]  F. Dudek,et al.  Role of electrical interactions in synchronization of epileptiform bursts. , 1986, Advances in neurology.

[22]  L. Wilkens,et al.  Synchronization of the Noisy Electrosensitive Cells in the Paddlefish , 1999 .

[23]  Martin Tobias Huber,et al.  Computer Simulations of Neuronal Signal Transduction: The Role of Nonlinear Dynamics and Noise , 1998 .

[24]  Kenneth O. Johnson,et al.  Synchrony: a neuronal mechanism for attentional selection? , 2002, Current Opinion in Neurobiology.

[25]  Kurths,et al.  Phase synchronization of chaotic oscillators. , 1996, Physical review letters.