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.

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.

References in periodicals archive ?
Given the evidence, it is more reasonable to postulate that the Second Solar Spectrum results from interface polarization and associated condensation reactions, rather than calling for anisotropic radiation, Hanle depolarization, and collisional depolarization.
Evidence for collisional depolarization in MgH lines of the Second Solar Spectrum.
It is important to correct data in such a way as to isolate depolarization due to sample dynamics from instrumental depolarization as far as it is possible.
A related method, which is known as the thermally stimulated depolarization current, or TSDC technique, has come to be regarded as a viable method for studying the relaxation properties of polymers.
What they observed is a persistent "leak" of sodium through the mutant channels causing prolonged depolarization, or increased cellular excitability.
Changes in inward cationic currents might also contribute to EADs, slow response APs during depolarization and transient inward currents (Iti) on repolarization (5).
In 7-8 ms, depolarization traveled to the lateral LV surface and the RV base.