The Journal of General Physiology, Vol 60, 1-19,
Copyright © 1972 by The Rockefeller University Press
Voltage Clamp Experiments on Single Muscle Fibers of Rana pipiens
L. E. Moore 1
1 From the Department of Physiology, Case Western Reserve University, Cleveland, Ohio 44106
A voltage clamp for single muscle fibers has been developed. Stability of the system was achieved when an artificial node was created by enclosing a single muscle fiber in a petroleum jelly seal which served as an analogue of the myelin sheath. Typical voltage clamp records were obtained with large inward transient currents followed by a delayed rectification of the outward currents. These currents looked qualitatively similar when the transverse tubular system was destroyed. Errors in current measurement, especially those due to anomalous rectification, are discussed.
Submitted on July 15, 1971