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Fig. 1. Potassium currents (IK) and sodium currents
(INa) generated in a voltage-clamp simulation. (A) The
simulated potassium currents are those obtained during 100 ms depolarizations
from a holding potential of 90 mV to a range of potentials from
70 to +60 mV in 10 mV steps. (B) The simulated sodium currents were
those obtained in response to a 1 ms depolarization to a range of potentials
from 70 to + 70 mV in 10 mV steps.