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Multimodal regimes in a compartmental model of the dopamine neuron
Journal article   Peer reviewed

Multimodal regimes in a compartmental model of the dopamine neuron

Georgi S. Medvedev and Jaime E. Cisternas
Physica. D, v 194(3), pp 333-356
2004

Abstract

Andronov–Hopf bifurcation Chains of coupled oscillators Multimodal oscillations
We study chains of strongly electrically coupled relaxation oscillators modeling dopamine neurons. When individual oscillators are in the regime close to an Andronov–Hopf bifurcation (AHB), the coupled system exhibits a variety of oscillatory behavior. We show that the proximity of individual oscillators to the AHB has a significant impact on the system dynamics in a wide range of parameters. It manifests itself through a family of stable multimodal periodic solutions that are composed out of large-amplitude relaxation oscillations and small-amplitude oscillations. This family of solutions has a rich bifurcation structure. The waveform and the period vary greatly across the family. The structure and bifurcations of the stable periodic solutions of the coupled system are investigated using numerical and analytic techniques.

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Collaboration types
Domestic collaboration
Web of Science research areas
Mathematics, Applied
Physics, Fluids & Plasmas
Physics, Mathematical
Physics, Multidisciplinary
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