Publisher： IOP Publishing
E-ISSN： 1741-4199|24|8|80501-80506
ISSN： 1674-1056
Source： Chinese Physics B, Vol.24, Iss.8, 2015-08, pp. : 80501-80506
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Abstract
In this paper, the relationship between external current stimulus and chaotic behaviors of a Hindmarsh–Rose (HR) neuron is considered. In order to find out the range of external current stimulus which will produce chaotic behaviors of an HR neuron, the Shil’nikov technique is employed. The Cardano formula is taken to obtain the threshold of the chaotic motion, and series solution to a differential equation is utilized to obtain the homoclinic orbit of HR neurons. This analysis establishes mathematically the value of external current input in generating chaotic motion of HR neurons by the Shil’nikov method. The numerical simulations are performed to support the theoretical results.
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