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. 1997 Feb 1;109(2):201–216. doi: 10.1085/jgp.109.2.201

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Predicted relative slope conductance g/g_o at −100 mV (relative to zero mV) for a single occupancy pore containing multiple internal barriers of equal height plotted as a function of the number n of barriers in the pore. A and B are the predictions for low (c ≈ 0) and high (c → Θ) salt concentrations according to Eqs. 8 and 9, respectively, based on absolute reaction rate theory. The ratio k_i/ k_pa represents the rate constant for an ion hopping over an internal barrier, relative to the rate constant for hopping over a surface barrier.