TWO ELECTRODE VOLTAGE CLAMP
PROCEDURE
The voltage-dependent kinetics of the K1 and Na1 (right)
currents in an electrocyte from a fish with a high EOD
frequency (131 Hz) are more rapid than those of an electrocyte
from a fish with a low EOD frequency (55 Hz). Traces of K+
currents; Na+ currents illustrate the peak Na+ current for each
cell and currents at two other values of membrane potential
arbitrarily chosen for each cell. By visual inspection, the
activation of the Na+ current is also more rapid in its
activation phase because we could not be certain there was no
influence of the capacitative transient caused by charging the
membrane on the early part of the current record.