Chronaxies
Webchro·nax·ie. also chro·nax·y (krō′năk′sē, krŏn′ăk′-) n. pl. chro·nax·ies. The minimum interval of time necessary to electrically stimulate a muscle or nerve fiber, using twice the minimum current needed to elicit a threshold response. [French : Greek khronos, time + Greek axiā, value (from axios, worthy; see ag- in Indo ... WebChronaxie values are dependent on the type and size of the neuronal elements where the action potential is initiated. Axon chronaxies are generally in the range of 30–200 μs for …
Chronaxies
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WebThe chronaxie for orthodromic activation was similar to that for axonal activation, but was 40 times smaller than the chronaxie for direct cell body activation. This suggests that, … WebNov 26, 2024 · The nociceptive withdrawal reflex (NWR) is used to investigate nociception in horses. The NWR threshold is a classical model endpoint. The aims of this study were to determine NWR tolerance and to compare threshold and tolerance reflexes in horses. In 12 horses, the NWR was evoked through electrical stimulation of the digital nerve and …
Webchronaxie (plural chronaxies) The minimum time over which an electric current must be applied in order to stimulate a muscle fiber or nerve cell. See also . rheobase; … Webchro·nax·ie ( krō'nak-sē ), A measurement of excitability of nervous or muscular tissue; the shortest duration of an effective electrical stimulus having a strength equal to twice the minimum strength required for excitation. Synonym (s): chronaxia, chronaxis, chronaxy [G. chronos, time, + axia, value]
Webchro·nax·ie ( krō'nak-sē ), A measurement of excitability of nervous or muscular tissue; the shortest duration of an effective electrical stimulus having a strength equal to twice the … WebPoésie française. Liens; A Propos ; Poésie; Rechercher un poème; Poèmes; Poètes; Nouveaux poèmes
WebChronaxie definition: The minimum time necessary to excite a tissue, such as that of muscle or nerve cells, with an electric current of twice the rheobase.
WebApr 14, 2024 · Assessing chronaxies of the target neural population allows for parametric optimizations that improve sensitivity [12, 19] and selectivity [10, 11, 20]. For instance, stimulating with phase durations close to chronaxie is an efficient way to minimize stimulation charge [ 13 , 19 ] Moreover, chronaxies vary across myelinated and … green exotic carsWebA comparison of chronaxies for ventricular fibrillation induction, defibrillation, and cardiac stimulation: unexpected findings and their implications It may be reasonable to study whether LEC pulses from 0.25 ms to 0.30 ms in duration and up to 250 V in amplitude would increase therapeutic yield in VT termination without VF induction in humans. green exotic bootsWebJul 17, 2015 · The short chronaxies we obtained for the axons, on the order of 100 microseconds, are more characteristic of myelinated neurons, where a whole range of chronaxies has been observed, depending on the axon geometry and degree of myelination At the slowest extreme, the chronaxies are on the order of a millisecond, … fluid microsoft teamsChronaxie is the tissue-excitability parameter that permits choice of the optimum stimulus pulse duration for stimulation of any excitable tissue. Chronaxie (c) is the Lapicque descriptor of the stimulus pulse duration for a current of twice rheobasic (b) strength, which is the threshold current for an infinitely long … See more Chronaxie is the minimum time required for an electric current double the strength of the rheobase to stimulate a muscle or a neuron. Rheobase is the lowest intensity with indefinite pulse duration which just stimulated muscles … See more The terms chronaxie and rheobase were first coined in Louis Lapicque’s famous paper on Définition expérimentale de l’excitabilité that was published in 1909. The above I(d) … See more The main value of chronaxie is comparing excitability across different experiments and measurements using the same standard, thus making data comparisons easier. Electrical stimulation based on chronaxie could regulate myoD gene expression in … See more • Bursting • Calcium channels • Epithelial sodium channel • Ion channels See more An electrode is inserted into the muscle of interest, which is then stimulated using surface current. Chronaxie values increase resulting from hyperventilation can be ascribed to a … See more Chronaxie is increased in the tetany of hypoparathyroidism. It must be remembered, however, that it is the rheobase which corresponds to the x.c.c. of electrical … See more Acute intoxication of rats with aldrin decreases chronaxie, whereas chronic exposure to this chlorinated hydrocarbon insecticide has the reverse effect. Chronic exposure of rats to the closely related epoxide, dieldrin, has been suggested to reduce their … See more fluid milk processingWebalso chro·nax·y (krō′năk′sē, krŏn′ăk′-) n. pl. chro·nax·ies. The minimum interval of time necessary to electrically stimulate a muscle or nerve fiber, using twice the minimum current needed to elicit a threshold response. [French : Greek khronos, time + Greek axiā, value (from axios, worthy; see ag- in Indo-European roots ).] green expanses in suburbs crosswordWebBackground: Strength-duration curves for permanent His bundle (HB) pacing are potentially important for pacemaker programming. Objectives: We aimed to calculate strength-duration curves and chronaxies of the HB and of the adjacent right ventricular (RV) working myocardium and to analyze zones of selective HB capture and battery current drain … green exotic fruitWebn. pl. chro·nax·ies. The minimum interval of time necessary to electrically stimulate a muscle or nerve fiber, using twice the minimum current needed to elicit a … fluid momentum men\u0027s mountain bike