Effects of permeant monovalent cations on end-plate channels.

1. The time constant of decay (tau D) and peak amplitude of miniature end-plate currents (m.e.p.c.s) were recorded in voltage-clamped toad sartorius fibres. The conductance (gamma) and average lifetime (tau N) of end-plate channels activated by ionophoretically applied acetylcholine were calculated from records of current fluctuations and null potentials… (More)