Sensitivity analysis of a model of mammalian neural membrane.
Sensitivity analysis of a model of mammalian neural membrane.
复制标题
哺乳动物神经膜模型的敏感性分析。
DOI:
10.1007/s004220050455
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发表时间:
1998
影响因子:
1.9
通讯作者:
Grill,WM
中科院分区:
文献类型:
--
作者:
McIntyre,CC;Grill,WM
The sensitivity of the strength-duration (S-D) relationship to changes in the parameters describing the sodium channel of mammalian neuronal membrane was determined by computer simulation. A space-clamped patch of neuronal membrane was modeled by a parallel nonlinear sodium conductance, linear leakage conductance, and membrane capacitance. Each parameter that governs the activation (m) and inactivation (h) variables of the sodium channel was varied from −50% to +50% of its default value, and for each variation a S-D relationship was generated. Individual changes in six of the eleven parameters (αmA,αmD,αhA,βmA,βmB, andβhB) generated substantial changes in the rheobase current and chronaxie time (Tch) of the model. Changing the parameter values individually did not correct for the model's failure to generate excitation after the release from a long duration hyperpolarization (anode break excitation). Scaling a combination of five parameters (αmA,αmB,αhA,βmA, andβhB) by an equal amount produced a model that generated anode break excitation and increasedTch, but also decreased the amplitude of the action potential. To reproduce the amplitude of the action potential, the maximum sodium conductance and sodium Nernst potential were increased. These modifications generated a model that had S-D properties closer to experimental results, could produce anode break excitation, and reproduced the action potential amplitude.
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影响因子:
3.7
作者:
S. Nakagawa;Pamela Pawelek;F. Grinnell
通讯作者:
F. Grinnell
影响因子:
4
作者:
Karl R. Fath;C.-J. S. Edgell;Keith Burridge
通讯作者:
Karl R. Fath;C.-J. S. Edgell;Keith Burridge
DOI:
10.1016/s0021-9258(18)69042-8
发表时间:
1988-03
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
J. Keski‐oja;R. Raghow;M. Sawdey;D. Loskutoff;A. Postlethwaite;A. Kang;H. Moses
通讯作者:
J. Keski‐oja;R. Raghow;M. Sawdey;D. Loskutoff;A. Postlethwaite;A. Kang;H. Moses
影响因子:
3.8
作者:
A. Plioplys;H. Bedford
通讯作者:
H. Bedford
DOI:
--
发表时间:
1987
期刊:
影响因子:
--
作者:
A. Plioplys
通讯作者:
A. Plioplys