Single-Pulse Solutions for Oscillatory Coupling Functions in Neural Networks |
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Authors: | Fernanda Botelho James Jamison Angela Murdock |
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Institution: | (1) Department of Mathematical Sciences, University of Memphis, Memphis, TN, USA;(2) Department of Mathematical Sciences, University of Memphis, Memphis, TN, USA;(3) Department of Mathematics and Computer Science, Rhodes College, Memphis, TN, USA |
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Abstract: | We study the existence and linear stability of stationary pulse solutions of an integro-differential equation modeling the
coarse-grained averaged activity of a single layer of interconnected neurons. The neuronal connections considered feature
lateral oscillations with an exponential rate of decay and variable period. We identify regions in the parameter space where
solutions exhibit areas of excitation with single- and dimpled-pulses. When the gain function reduces to the Heaviside function,
we establish existence of single-pulse solutions analytically. For a more general gain function, we include numerical support
of the existence of pulse-like solutions. We then study the linear stability behavior of these solutions. |
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Keywords: | Integro-differential equations Integral equations neural networks pattern formation pulse and single-pulse solutions |
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