The membrane current density, Im, in the squid giant axon has been calculated from the measured external current applied to the axon, Io, by the equation

See PDF for Equation

where Vm is the membrane potential under the current electrode and r1 and r2 are the external and internal longitudinal resistances. The original derivation of this equation included in one step an assumption of a linear relation between Im and Vm. It is shown that the same equation can be obtained without this restricting assumption.

This content is only available as a PDF.
Copyright, 1961, by The Rockefeller Institute
1961
You do not currently have access to this content.