A transient electrical current associated with displacement of voltage-sensor charge during ion channel gating, distinct from current carried through an open permeation pathway. Its voltage dependence and changes following sensor mutations constrain the charge motions that couple membrane potential to opening.
The net displaced electric charge associated with a change in channel conformation, inferred by integrating the ion-channel gating current after subtracting unrelated currents. It is distinct from the electric current itself and from charge carried through the open pore.
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