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Effect of very short test pulse and base pulse durations on ionic current: In (A), the ionic current is plotted with time for no drug, in presence of mexilitine and in presence of lidocain. The test pulses are kept for 0.0008s and the base pulse is kept foe 0.0002 s. In (B), similar plot is done but with test pulses duration of 0.0002s and the base pulse duration of 0.0002s. All the drug concentrations are kept at 0.001 M.
