(n.) A power in nature, a manifestation of energy, exhibiting itself when in disturbed equilibrium or in activity by a circuit movement, the fact of direction in which involves polarity, or opposition of properties in opposite directions; also, by attraction for many substances, by a law involving attraction between surfaces of unlike polarity, and repulsion between those of like; by exhibiting accumulated polar tension when the circuit is broken; and by producing heat, light, concussion, and often chemical changes when the circuit passes between the poles or through any imperfectly conducting substance or space. It is generally brought into action by any disturbance of molecular equilibrium, whether from a chemical, physical, or mechanical, cause.
(n.) The science which unfolds the phenomena and laws of electricity; electrical science.
(n.) Fig.: Electrifying energy or characteristic.
Example Sentences:
(1) The dependence of fluorescence polarization of stained nerve fibres on the angle between the fibre axis and electrical vector of exciting light (azimuth characteristics) has been considered.
(2) Cellular radial expansion was apparently unaffected by exposure to electric fields.
(3) The purpose of the present study was to analyze the effects of cromakalim (BRL 34915), a potent drug from a new class of drugs characterized as "K+ channel openers", on the electrical activity of human skeletal muscle.
(4) Noradrenaline (NA) was released from sympathetic nerve endings in the tissue by electrical stimulation of the mesenteric nerves or by the indirect sympathomimetic agent tyramine.
(5) The automatic half of both the motor which advances the trepan as well as the second motor which rotates the trepan is triggered by the sudden change in electrical resistance between the trepan and the patient's internal body fluid, at the final stage of penetration.
(6) All of the serotonergic antagonists studied had additional effects on the response of the coronary artery to electrical stimulation or to norepinephrine.
(7) Hyperosmolar buffer slightly increased the sensitivity and maximal response to methacholine as well as the cholinergic twitch to electric field stimulation.
(8) The electrical stimulation of the tail associated to a restraint condition of the rat produces a significant increase of immunoreactive DYN in cervical, thoracic and lumbar segments of spinal cord, therefore indicating a correlative, if not causal, relationship between the spinal dynorphinergic system and aversive stimuli.
(9) Electrical stimulation of afferent pathways at intensities just below threshold for eliciting action potentials resulted in a dramatic decrease in JSCP threshold.
(10) Average temperature changes observed were less than 1 degree C. The present study demonstrates that the electrically evoked response in mammalian brain can be altered by ultrasound in a non-thermal, non-cavitational mode, and that such effects are potentially reversible.
(11) Quantitative esophageal sensibility, therefore is concluded to be particularly suited to evaluation by electric stimulation.
(12) The new trabecular bone closely resembled that typically seen at electrically active implants.
(13) A second group was chronically implanted without electrical stimulation in one leg and implanted with cyclical electrical stimulation applied through the electrode in the other leg.
(14) The intermandibularis is probably present only in electric rays.
(15) Masking experiments are demonstrated for electrical frequency-modulated tone bursts from 1,000 to 10,000 cps and from 10,000 to 1,000 cps with superimposed clicks.
(16) Photograph: AP Reasons for wavering • State relies on coal-fired electricity • Poor prospects for wind power • Conservative Democrat • Represents conservative district in conservative state and was elected on narrow margins Campaign support from fossil fuel interests in 2008 • $93,743 G K Butterfield (North Carolina) GK Butterfield, North Carolina.
(17) It is suggested that intra-endothelial conduction of electrical signals from capillaries to the resistance vessels may be involved in the local regulation of blood flow in the intact heart.
(18) In the anesthetized cat, the posterior canal nerve (PCN) was stimulated by electric pulses and synaptic responses were recorded intracellularly in the three antagonistic pairs of extraocular motoneurons.
(19) Among the epileptic patients investigated by the stereotactic E. E. G. (Talairach) whose electrodes were introduced at or around the auditory cortex (Area 41, 42), the topography of the auditory responses by the electrical bipolar stimulation and that of the auditory evoked potential by the bilateral click sound stimulation were studied in relation to the ac--pc line (Talairach).
(20) It is suggested that contractile responses to electrical stimulation in isolated sheep urethral smooth muscle are mediated by the sympathetic nervous system, mainly through release of noradrenaline stimulating postjunctional alpha 1-adrenoceptors.
Electrogenesis
Definition:
(n.) Same as Electrogeny.
Example Sentences:
(1) An analysis of potential distribution thus gives a better understanding of the electrogenesis of late potentials as well as their detection on the chest.
(2) The effect of norepinephrine, histamine, serotonin and potassium chloride on electrogenesis and contraction was studied on innervated and denervated smooth muscles of cat's nictitating membrane.
(3) The long-lived individuals have shown a delayed intensity of age-related changes in the brain electrogenesis.
(4) A model of resting membrane electrogenesis in skeletal muscles of prepupal Calliphora erythrocephala was formulated.
(5) The two types of K+ channels contribute outward current during the plateau and promote the repolarization of the action potential, and the slowly de-activating K+ current may also be involved in the electrogenesis of automaticity observed in some of these cells.
(6) The purpose of this study was to progress in the understanding of the electrogenesis of attention-related wave forms in order to highlight some of the underlying attentional processes.
(7) Tetrodotoxin (10(-6) M), a Na+-channel blocker, applied in the bathing medium for 20 min produced only minor changes, if any, in the resonance, although gross impairment of Na+-spike electrogenesis was apparent in most of the neurons.
(8) Because early experiments using axonal preparations required very high concentrations of ethanol to produce ionic current alterations, researchers turned their attention away from specific effects on electrogenesis and looked for effects at the synapse.
(9) This work describes the change in an active electrogenesis of the command neurons responsible for defensive closure of a snail's pneumostome during elaborating, extinction and restoration of a classical conditioned defensive reflex to a tactile stimulus.
(10) These results were construed to support a two-component hypothesis for cardiac electrogenesis.
(11) The selective effect on Na activation, which is reversible, confirms the view that the movements of Na and K during spike electrogenesis occur at structurally different sites on the membrane.
(12) Action potential propagation in neonatal rat optic nerve is completely blocked by 5 nM saxitoxin, indicating that action potential electrogenesis is mediated by channels that correspond to high-affinity saxitoxin-binding sites.
(13) The anaphylactic shock of the rabbit is characterized by an acute right ventricular overload, accompanied by severe alterations of cardiac electrogenesis.
(14) These data define the electrogenesis of Em in cardiac and portal venous muscle of SHR and their controls and provide a test of the hypothesis that altered Em electrogenesis contributes to increased arterial norepinephrine sensitivity seen in hypertension.
(15) EEG tracings from conscious restrained rabbits were analyzed by inspection and amplitude integration (electrogenesis).
(16) It is concluded that distinct ionic mechanisms give rise to the initial electrogenesis and the d.a.p.
(17) The immediate detection of these parameters permits evaluation of any worsening or improvement of cerebral electrogenesis, as well as of the inter-hemispheric asymmetries at their onset.
(18) The inhibition of slow response electrogenesis caused by extracellular potassium is an important phenomenon to consider in trying to understand the origin of certain cardiac arrhythmias.
(19) Increasing the extracellular Ca2+ concentration reverses the aminoglycoside-induced blockade of the Ca(2+)-dependent electrogenesis of the muscle fibers.
(20) Starting with the key role of calcium in excitation-contraction coupling, the implications of calcium uptake disturbances in muscle electrogenesis are discussed.