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Postnov D. D., Sosnovtseva O. V., Postnov D. E. Autonomous and nonautonomous dynamics of functional model of serotonergic neuron. Izvestiya VUZ. Applied Nonlinear Dynamics, 2011, vol. 19, iss. 3, pp. 26-44. DOI: 10.18500/0869-6632-2011-19-3-26-44

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Autonomous and nonautonomous dynamics of functional model of serotonergic neuron

Postnov Dmitrij Dmitrievich, Saratov State University
Sosnovtseva Olga Vladimirovna, Danmarks Tekniske Universitet
Postnov Dmitrij Engelevich, Saratov State University

Serotonin is a key modulator of neuronal activity both at the system level and at the level of local (short-range) interactions. However, in contrast to the synaptically connected neuron ensembles, there are much less qualitative models that describe the serotonin-controlled neural circuits. In this paper, we propose a relatively simple model of serotonergic (serotonin-releasing and serotonin-sensitive) neuron. It is shown that specific features of both autonomous and nonautonomous dynamics of such model are considerably dependent on a weak depolarizing voltage-independent current of neuron and on the presence of serotonin auto-receptors. Our work is aimed on development of «computational image» for basic serotonin-controlled neural circuits, which role for basic neuronal features plays the famous FitzHugh–Nagumo model. 

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