Ion | Channel | State variable | α | β |
---|---|---|---|---|
Na | Fast sodium | m | \( \frac{-0.6*\left(\mathrm{V}+30\right)}{e^{-0.1*\left(\mathrm{V}+30\right)}-1} \) | \( \frac{20}{e^{\frac{\mathrm{V}+55}{18}}} \) |
 |  | h | \( \frac{0.4}{e^{\frac{\mathrm{V}+50}{20}}} \) | \( \frac{6}{1+{e}^{-0.1*\left(\mathrm{V}+20\right)}} \) |
K | Delayed | n | \( \frac{-0.02*\left(\mathrm{V}+40\right)}{e^{-0.1*\left(\mathrm{V}+40\right)}-1} \) | \( \frac{0.4}{e^{\frac{\mathrm{V}+50}{80}}} \) |
 | A-type | a | \( \frac{-0.006*\left(\mathrm{V}+90\right)}{e^{-0.1*\left(\mathrm{V}+40\right)}-1} \) | \( \frac{0.1}{e^{\frac{\mathrm{V}+30}{10}}} \) |
 |  | h A | \( \frac{0.04}{e^{\frac{\mathrm{V}+70}{20}}} \) | \( \frac{0.6}{e^{-0.1*\left(\mathrm{V}+90\right)}+1} \) |
 | Calcium |  | \( {I}_{K,Ca}={\widehat{G}}_{K,Ca}\left(\frac{{\left[Ca\right]}_i/0.001}{1+{\left[Ca\right]}_i/0.001}\right)\left(\mathrm{V}-{e}_k\right) \) | |
Ca | Ca | c | \( \frac{-0.3*\left(\mathrm{V}+13\right)}{e^{-0.1*\left(\mathrm{V}+13\right)}-1} \) | \( \frac{10}{e^{\frac{\mathrm{V}+38}{18}}} \) |