Insensitive voltage-dependent K+ currents in hypoxia. A small group of DRG neurones (22 %) revealed no changes over time in amplitude or kinetic of voltage-gated K+ currents. A) Whole cell recording from a neurone without changes in K+ current amplitude. B) Summary demonstrating an unchanged K+ current (lower panel, n = 7) during different pO2-levels (top panel). C) I-V relation of 7 neurones showed no changes in amplitude of K+ currents over 25–35 min. Bath: choline chloride, pipette: potassium fluoride.