Ion (X) | E_{rev} (mV) | P_{K+}/P_{X} |
---|---|---|

Na^{+} | 17.9 ± 2 (n = 5) | 2.0^{a} |

Ca^{2+} | 5.0 ± 1 (n = 17) | 1.4^{b} |

↵a Permeability ratios calculated from reversal potentials using equation E

_{rev}= RT/zF × ln(P_{K+}[K]_{o}/P_{Na+}[Na]_{i}).↵b Permeability ratios calculated from reversal potentials using equation E

_{rev}= RT/F × ln(√((4P_{Ca2+}[Ca]_{o}/P_{K+}[K]_{i})+1/4) − 1/2), where RT/F = 25.26 mV and Z = 1. The junction potential correction was as follows: KCl-NaCl, Vm = V − 1.1 mV; KCl-CaCl_{2}, Vm = V − 2.3 mV.