Depolarization

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depolarization

[dē‚pō·lə·rə′zā·shən]
(electricity)
The removal or prevention of polarization in a substance (for example, through the use of a depolarizer in an electric cell) or of polarization arising from the field due to the charges induced on the surface of a dielectric when an external field is applied.
(optics)
The resolution of polarized light in an optical depolarizer.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Depolarization

 

the decrease in the difference in potentials during the resting state (so-called resting potential) between the internal and external sides of the membrane of a living cell. In nerve cells and their processes, as well as in muscle fibers, depolarization is one of the most important components of the process of excitation. Stable depolarization may occur experimentally or in certain diseases as a result of direct damage to the membrane or disruption of metabolism.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Although they are regenerative, DPs are not all-or-none responses; rather their size is related to the amplitude and rate of rise of the depolarizing stimulus.
2) The use of intermediate acting non depolarizing muscle relaxant like atracurium lowers the incidence of residual neuromuscular block but does not eliminate it.
A brief depolarizing or hyperpolarizing current pulse (50 ms, 50 nA) was injected into the heart muscle at various phases of the rhythmical activity.
However, this depolarizing effect was not at a statistically significant level.
From wave interaction to different systems, including depolarizing media, this reference provides everything needed to serve as both a refresher course and a review of the latest findings.
NMBAs are classified as depolarizing or nondepolarizing agents.
The lengthy chapter on depolarizing media addresses ground plane effects, Faraday rotation, and the problem of rain-induced depolarization waves along an earth-space communication link.
When a 10 ms depolarizing pulse was applied, vesicles in the FRP were depleted.
In this spirit, I encourage you to get hold of futurist Bob johansen's description of 10 leadership skills for the future (including smart mob organizing to act quickly; dilemma flipping to see the world differently; constructive depolarizing to calm tensions and foster positive engagement).
Parallel effects of monoclonal antibodies, depolarizing buffers, and glycolytic inhibitors," The Journal of Immunology, vol.
MscS shows marked voltage-dependent inactivation under depolarizing conditions [13, 19-22].
For the depolarizing [R.sub.input], a +25 pA current injection was made for 800 ms and the voltage change measured.