Extracellular action potentials found close to the surface of motoneurons are related to the
intracellular spikes. Evidence is cited to support the assumption that the extracellular spikes …

The lateral geniculate nucleus of the cat was explored with micropipettes having
submicroscopic tips. The only reliably recorded intracellular activity was from axons …

The method to be described is one which permits quantitative determinations of blood flow
in the gross structures of the central nervous system. Other available quantitative methods …

METHODS All the experiments were done on sartorius muscles of English frogs (Rana
temporaria) at room temperature (15-20 C). The sartorius was left attached to the split pelvic …

This is an investigation of the effects on the late after-potential of immersing frog sartorius
muscles in three kinds of modified Ringer's fluid; hypertonic, low chloride, and potassium …

Changes in spike configuration and in the inward and outward currents of voltage-clamped
axons agree in indicating that the increases in permeability to sodium and potassium ions …

Intracellular recordings of the negative after-potential that follows a train of impulses in frog
muscle are described. It is postulated that the cause of this after-potential is an accumulation …

METHODS Figure 1 illustrates the chamber in which were placed single fibres of the
semitendinosus muscle of Rana pipien8. Electrical connexion to the solution in the chamber …

An attempt has been made to decide upon the most reasonable equivalent circuit that will
describe the passive linear properties of the Purkinje strands of sheep heart muscle. In order …

Some of the linear electrical properties of frog sartorius muscle have been investigated in
Ringer's fluid and in a Ringer fluid made hypertonic by the addition of sucrose or NaCl …