Depolarization

(redirected from depolarisation)
Also found in: Dictionary, Thesaurus, Medical, Wikipedia.
Related to depolarisation: repolarisation

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 ?
The digoxin binding to sodium potassium ATPase of the archaeal membrane generates a paroxysmal depolarisation shift and an electromagnetic field of 10-7 Hz oscillations.
Comparison of cardiac magnetic field distribution during depolarisation and repolarisation.
Depolarisation has created a third type of IFA known as a multi-tied adviser who can sell products on behalf of a number of different companies, without covering the whole market.
Depolarisation has muddied the waters but there is still no doubt in my mind that independent advice is best.
Depolarisation as a shake-up in the intermediary sector.
Membrane depolarisation enhances myelination during postnatal development, and can promote the differentiation of ES-OL cells.
Mice had prolonged ventricular depolarisation, an electrical conduction anomaly that could lead to heart rhythm abnormalities.
Barclays is leading the pack in the development of a total multi-tie proposition, while others are waiting to see how depolarisation will impact the market
Sergei Kirov, a neuroscientist in the Medical College of Georgia Schools of Medicine and Graduate Studies, has revealed that it is called anoxic depolarisation, and it primarily results from the brain getting insufficient blood and oxygen after a stroke.