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More about Cable Equation #4

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emptymalei opened this issue Mar 26, 2016 · 0 comments
Open

More about Cable Equation #4

emptymalei opened this issue Mar 26, 2016 · 0 comments

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@emptymalei
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看到这里 有一个比较合理的 cable 模型:

image

这样模型简化的时候,是简化的膜内核膜外的电位和等效电流等等,似乎比书中考虑成细胞里面的电流和电压更加合理一些。

另外,书中的电流和电压应该也是值得膜附近:

  1. 其实细胞内部的电流和电压的径向分布非常不均匀,每次膜电位变化时每个通道涉及到的离子很少,很难对细胞内部整个大环境的电势造成影响;
  2. 这些离子扩散速度没有那么快,不能达到一个整体的平衡态。
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