Figure 3

IK channels are functional in inside-out recordings of human GCs. (A) Current trace exhibiting simultaneous activity of IK and BK_Ca in the same membrane patch (recorded at a holding potential of +90 mV). (B) The IK current-voltage relationship yielded a single-channel conductance of 67 ± 5 pS and a reversal potential of 7 mV (n = 5 recordings on individual cells). Data points represent means ± SEM (error bars only depicted when more than two values were available). All currents were recorded under symmetrical high K⁺-gluconate concentrations.