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Chronaxies

WebClassically, to electrically excite C-nociceptors, rectangular pulses are used with a duration close to the estimated chronaxie of C-fibres (about 2 ms). Recent results using slow … Webnoun. chron· ax· ie ˈkrō-ˌnak-sē. ˈkrä-. variants or less commonly chronaxy. : the minimum time required for excitation of a structure (such as a neuron) by a constant electric …

Research in Electrical Stimulation Fundamentals

WebJul 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, … WebB Distribution of chronaxies for antidromic activation. Recordings were intracellular for five neurons and extracellular for 29. The thick-line histogram corresponds to chronaxies obtained after ... phin subscription https://kdaainc.com

A comparison of chronaxies for ventricular fibrillation induction ...

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. Webstructures have different chronaxies, stimulus pulse duration is an important control parameter for selec-tive stimulation. For example, the shorter chronaxy of myelinated motor neurons compared with that of unmyelinated fibers of the myocardium allows safe stimulation with short pulses during artificial respira-tion. Web这组词都有“文字,词,语言”的意思,其区别是: lexicon: 指某种语言、某人或某一知识领域的全部词汇。 term: 指有特定意义的词,词语或术语。 vocabulary: 集合名词,指词汇、语汇或词汇量。 word: 普通用词,指语言的最小单位的单词、字,也可指话、整句话或一段话。 tsp1 downregulation

Heterochrony Definition & Meaning Merriam-Webster Medical

Category:Chronaxie - an overview ScienceDirect Topics

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Chronaxies

What is the significance of chronaxie? - Studybuff

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 … WebElectro- cortical activity was recorded from screw electrodes in contact with the dura. Chronaxies were calculated from strength-duration data using the equation: chronaxie = …

Chronaxies

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Webn. 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 … WebChronaxies Total Number of words made out of Chronaxies = 603 Chronaxies is an acceptable word in Scrabble with 22 points.Chronaxies is an accepted word in Word with Friends having 23 points. Chronaxies is a 10 letter long Word starting with C and ending with S. Below are Total 603 words made out of this word. 9 letter Words made out of …

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 … 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]

WebPoésie française. Liens; A Propos ; Poésie; Rechercher un poème; Poèmes; Poètes; Nouveaux poèmes 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 …

WebOct 30, 2008 · A comparison of chronaxies for ventricular fibrillation induction, defibrillation, and cardiac stimulation: unexpected findings and their implications. Thomas Lawo Medical Clinic II (Cardiology), BG University Hospital Bergmannsheil, Bochum, Germany.

Chronaxie 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 ph instruks 2022WebWhat is rheobase and chronaxie? Rheobase is the lowest intensity with indefinite pulse duration which just stimulated muscles or nerves. …. Chronaxie is the tissue … phins to the westWebBackground: 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 … phins t shirtsWebJan 15, 2004 · The chronaxies measured with electrodes positioned near the cell body were, at most, a factor of ∼7 greater than the chronaxies measured with electrodes positioned over the axon (Fig. 2), while the refractory periods measured with electrodes positioned near the cell body were, at most, a factor of ∼10 greater than the refractory … phin standardsWebChronaxies were calculated from strength-duration data using the equation: chronaxie = t log 2 h l It_ Ir where h is the threshold current of a square pulse lasting t msec and /r is the rheobasic current (Abeles 1967a). RESULTS A. Sensitivity of the dieneephalon of the cerveau isold eat to low and high frequency stimulation In seven eerveau ... tsp 2030 fund breakdownWebchro·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] tsp 2022 distribution chartWebalso 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 ).] ph in su