The threshold potential is the critical level to which the membrane potential must be depolarized in order to initiate an action potential. Threshold potentials are necessary in order to regulate and propagate signaling in both the central nervous system (CNS) and the peripheral nervous system (PNS). Most often the threshold potential is a membran...
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http://en.wikipedia.org/wiki/Threshold_potential
(from the article `nervous system`) ...the extent to which the sodium channels are activated, and this in turn depends upon the strength and duration of the original stimulus at the ...
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http://www.britannica.com/eb/a-z/t/45
the transmembrane potential that must be achieved before a membrane channel can open; it differs among the various cardiac membrane channels.
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http://www.encyclo.co.uk/local/21001
No exact match found.
