6.021/Notes/2006-10-31

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Hodgkin-Huxley review

  • Cm,GL,VL are constants
  • C_m \approx 1\mu F/cm^2
  • V_K \approx 60 mV log\frac{c_K^o}{c_K^i}
  • V_{Na} \approx 60 mV log\frac{c_{Na}^o}{c_{Na}^i}
  • G_K=\overline{G_K}n^4, G_{Na}=\overline{G_{Na}}m^3h
  • m, n, h obey x+\tau_x(V_m)\frac{dx}{dt}=x_\infty(V_m)
  • \tau_m \ll \tau_h, \tau_n
  • As V_m\uparrow
    • h\infty\downarrow
    • n\infty,m\infty\uparrow
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