Journal
NEUROCOMPUTING
Volume 69, Issue 4-6, Pages 293-316Publisher
ELSEVIER
DOI: 10.1016/j.neucom.2005.03.006
Keywords
Morris-Lecar model; classes I and II neuron; saddle-node bifurcation; homoclinic bifurcation
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The Morris-Lecar (M-L) equations tire an important neuron model that exhibits classes I and II excitabilities when system parameters are set appropriately. Although many papers have clarified characteristic behaviors of the model, the detailed transition between two classes is unclear from the viewpoint of bifurcation analyses. In this paper, we investigate bifurcations of invariant sets in a five-dimensional parameter space, and identify all essential parameter of the half-activated potential of the potassium activation curve that contributes to the alternation of the membrane properties of the M-L neuron. We also show that the membrane property can be controlled by varying the value of the single parameter. (c) 2005 Elsevier B.V. All rights reserved.
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