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Morris-Lecar

This model was devised for barnacle muscle fiber.
$\displaystyle F(v,w)$ $\textstyle =$ $\displaystyle -g_{ca}m_\infty(v)(v-v_{ca})-g_kw(v-v_k)$  
  $\textstyle -$ $\displaystyle g_l(v-v_l) +I_{app}$ (17)
$\displaystyle G(v,w)$ $\textstyle =$ $\displaystyle \phi \cosh({1\over 2}{v-v_3\over v_4})(w_\infty-w),$ (18)

where
$\displaystyle m_\infty(v)$ $\textstyle =$ $\displaystyle {1\over 2}+{1\over 2}\tanh({v-v_1\over v_2}),$ (19)
$\displaystyle w_\infty$ $\textstyle =$ $\displaystyle (1+\tanh({v-v_3)\over 2v_4})).$ (20)

Typical parameter values are $C_m = 20$, $g_{ca} = 4.4$, $g_l = 2$, $g_k = 4.5$, $v_2 = 15$, $v_4 = 15$, $v_1 = -1$, $v_3 = 0$, $v_k = -70$, $v_{ca} = 100$, $v_l = -50$, $\phi = 0.02$, $I_{app}=0.1$.