| SPECIAL TOPIC—8th IUPAP International Conference on Biological Physics |
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Langevin approach with rescaled noise for stochastic channel dynamics in Hodgkin-Huxley neurons |
| Huang Yan-Dong (黄艳东), Li Xiang (李翔), Shuai Jian-Wei (帅建伟) |
| Department of Physics, Xiamen University, Xiamen 361005, China |
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Abstract The Langevin approach has been applied to model the random open and closing dynamics of ion channels. It has long been known that the gate-based Langevin approach is not sufficiently accurate to reproduce the statistics of stochastic channel dynamics in Hodgkin-Huxley neurons. Here, we introduce a modified gate-based Langevin approach with rescaled noise strength to simulate stochastic channel dynamics. The rescaled independent gate and identical gate Langevin approaches improve the statistical results for the mean membrane voltage, inter-spike interval, and spike amplitude.
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Received: 29 April 2015
Revised: 20 August 2015
Accepted manuscript online:
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PACS:
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05.10.Gg
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(Stochastic analysis methods)
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87.19.ll
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(Models of single neurons and networks)
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05.40.-a
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(Fluctuation phenomena, random processes, noise, and Brownian motion)
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82.39.Wj
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(Ion exchange, dialysis, osmosis, electro-osmosis, membrane processes)
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| Fund: Project supported by the National Natural Science Foundation for Distinguished Young Scholars of China (Grant No. 11125419), the National Natural Science Foundation of China (Grant No. 10925525), and the Funds for the Leading Talents of Fujian Province, China. |
Corresponding Authors:
Shuai Jian-Wei
E-mail: jianweishuai@xmu.edu.cn
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Cite this article:
Huang Yan-Dong (黄艳东), Li Xiang (李翔), Shuai Jian-Wei (帅建伟) Langevin approach with rescaled noise for stochastic channel dynamics in Hodgkin-Huxley neurons 2015 Chin. Phys. B 24 120501
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