electrogenic


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potential

 [po-ten´shal]
existing and ready for action, but not active.
electric tension or pressure.
action potential see action potential.
after-potential the period following termination of the spike potential.
auditory evoked potential in electroencephalography, changes in waves in response to sound; see also brainstem auditory evoked potential.
brainstem auditory evoked potential that portion of the auditory evoked potential that comes from the brainstem; abnormalities can be analyzed to evaluate comas, to support diagnosis of multiple sclerosis, and to detect early posterior fossa tumors.
cognitive event--related p's a diagnostic study that uses electroencephalographic equipment and a computer dedicated to analyze brain wave P300; this wave is a measure of the brain's active cognitive processing of information. The patient is instructed to complete a task that requires attention and information processing. A recording of brain wave activity as well as information related to cognitive function is produced.
diastolic potential the transmembrane potential of the cell during electrical diastole.
maximal diastolic potential the most negative level attained during the cardiac cycle by the cell membrane of a fiber that does not have a constant resting potential, occurring at the end of phase 3 of the action potential. In pacemaker cells this is a point of hyperpolarization.
membrane potential the electric potential that exists on the two sides of a membrane or across the wall of a cell.
resting potential (resting membrane potential) the difference in potential across the membrane of a cell when it is at rest, i.e., fully repolarized. In cardiac physiology this occurs during electrical diastole in pacemaker cells and continuously in nonpacemaker cells.
spike potential the initial, very large change in potential of the membrane of an excitable cell during excitation.
threshold potential the transmembrane potential that must be achieved before a membrane channel can open; it differs among the various cardiac membrane channels.
potential (omaha) in the omaha system, a problem modifier on the third level of the problem classification scheme, defined as the presence of health patterns, behaviors, or risk factors that may preclude optimal health even though specific signs and symptoms are absent.
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References in periodicals archive ?
Isolation and characterization of a novel electrogenic bacterium, dietzia sp.
It should be noted that electrogenic activity cannot be pointed as the sole responsible for the removal of organic matter, since it has been shown that near 30% of COD removal is not due to electrogenic phenomena but to parallel metabolic processes that use nitrate and sulphate as electron acceptors and that are very common in domestic wastewater (46).
Known electrogenic bacteria Shewanella (Shewanellaceae) were found on the anodes of both MFCs (Figures 2(c) and 2(d)).
Electroneutral sodium absorption and electrogenic anion secretion across murine small intestine are regulated in parallel.
[sup][12],[19],[22] It has been demonstrated that Na [sup]+ -dependent bicarbonate transport include five members of the SLC4 family, including two electrogenic NBC (NBCe1/SLC4A4 and NBCe2/SLC4A5), 1 electroneutral Na [sup]+-HCO[sub]3 [sup]− cotransporter (NBCn1/SLC4A7) and 2 Na [sup]+ -dependent Cl[sup]− /HCO[sub]3 [sup]− exchangers (NCBE/SLC4A10 and NDCBE/SLC4A8).
An effective carry of a charge and colonization of the anode by steady electrogenic microbial association were provided by carbon electrode material with the big specific area usage.
It is necessary for the activation of many enzymes, as a cellular osmoticum for rapidly expanding cells, and as a counter cation for anion accumulation and electrogenic transport processes (White and Karley,2010).
Being reversed, electrogenic transporters usually change the direction of the net ion flow.
Offenhaausser, "Adhesion and survival of electrogenic cells on gold nanopillar array electrodes," International Journal of Nano and Biomaterials, vol.
This transport mechanism is electrogenic and establishes an acid pH gradient and a positive transmembrane potential within these intracellular compartments (Philippe et al., 2002; Harvey and Wieczorek, 1997).
The joint venture company's technology utilises naturally occurring bacteria in an electrogenic bioreactor, to treat wastewater.
Sodium channels are electrogenic; that is, they produce tiny electrical signals and help by contributing to nociceptor firing.