Experimental evidence of a chaotic region in a neural pacemaker

被引：35

作者：

Gu, Hua-Guang ^{[1
,2
]}

Jia, Bing ^{[1
]}

Chen, Guan-Rong ^{[2
]}

机构：

[1] Tongji Univ, Sch Aerosp Engn & Appl Mech, Shanghai 200092, Peoples R China

[2] City Univ Hong Kong, Dept Elect Engn, Hong Kong, Hong Kong, Peoples R China

来源：

PHYSICS LETTERS A | 2013年 / 377卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Chaos; Bifurcation; Neural firing pattern; Hindmarsh-Rose model; HINDMARSH-ROSE MODEL; BIFURCATION SCENARIOS; DYNAMICS; RESONANCE; SPIKING; RAT;

D O I：

10.1016/j.physleta.2013.01.015

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this Letter, we report the finding of period-adding scenarios with chaos in firing patterns, observed in biological experiments on a neural pacemaker, with fixed extra-cellular potassium concentration at different levels and taken extra-cellular calcium concentration as the bifurcation parameter. The experimental bifurcations in the two-dimensional parameter space demonstrate the existence of a chaotic region interwoven with the periodic region thereby forming a period-adding sequence with chaos. The behavior of the pacemaker in this region is qualitatively similar to that of the Hindmarsh-Rose neuron model in a well-known comb-shaped chaotic region in two-dimensional parameter spaces. (c) 2013 Elsevier B.V. All rights reserved.

引用

页码：718 / 720

页数：3

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