Formation of antiwaves in gap-junction-coupled chains of neurons

Details Formation of antiwaves in gap-junction-coupled chains of neurons Formation of antiwaves in gap-junction-coupled chains of neurons

2012-03-16

arxiv.org/abs/1203.3596v1

Biology

Quantitative Biology

Neurons and Cognition

28 pages 10 figures

Scientific paper

Using network models consisting of gap junction coupled Wang-Buszaki neurons, we demonstrate that it is possible to obtain not only synchronous activity between neurons but also a variety of constant phase shifts between 0 and \pi. We call these phase shifts intermediate stable phaselocked states. These phase shifts can produce a large variety of wave-like activity patterns in one-dimensional chains and two-dimensional arrays of neurons, which can be studied by reducing the system of equations to a phase model. The 2\pi periodic coupling functions of these models are characterized by prominent higher order terms in their Fourier expansion, which can be varied by changing model parameters. We study how the relative contribution of the odd and even terms affect what solutions are possible, the basin of attraction of those solutions and their stability. These models may be applicable to the spinal central pattern generators of the dogfish and also to the developing neocortex of the neonatal rat.

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