Delayed afterdepolarization and spontaneous secondary spiking in a simple model of neural activity |
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Authors: | V.V. Klinshov V.I. Nekorkin |
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Affiliation: | Institute of Applied Physics, Russian Academy of Sciences, 46 Ulyanov Str., 603950 Nizhny Novgorod, Russia |
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Abstract: | In this paper we suggest a new dynamical model of neuron excitability. It is based on the classical FitzHugh-Nagumo model in which we introduce the third variable for additional ionic current. By using the method of fast and slow motions we study the afterdepolarization, spontaneous secondary spiking and tonic spiking effects. We build regions in the parameter space that correspond to different dynamical regimes. The obtained results may be important for different problems of neuroscience, e.g. for the problem of working memory. |
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Keywords: | Delayed afterdepolarization Spontaneous secondary spiking Working memory Saddle-node bifurcation of periodic motions |
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