Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The steady-state transmembrane potential 
and degree of refractoriness 
are shown as functions of the HF stimulation parameter 
. Critical values of 
for repetitive firing 
and for evoking a single action potential following a brief applied current pulse 
are identified. See text for description of critical values.
