chronaxie


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Related to chronaxie: rheobase

chronaxie

 [kro´nak-se]
the minimum time at which an electric current must flow at a voltage twice the rheobase to cause a muscle to contract. In a strength-duration curve for muscle stimulation, it is the pulse width at a voltage twice that at the rheobase.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

chro·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.
[G. chronos, time, + axia, value]
Farlex Partner Medical Dictionary © Farlex 2012

chronaxie

also

chronaxy

(krō′năk′sē, krŏn′ăk′-)
n. pl. chronax·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.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

chro·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.
[G.chronos, time, + axia, value]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

chronaxie

The minimum time for which an adequate electric current must be applied to a nerve to produce a contraction of the associated muscle. An adequate current is one that is at least twice the threshold value.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
References in periodicals archive ?
Panels E and F show effects of EOLs (60 [micro]g/mL) and thymol (60 [micro]g/mL; 0.4 mM) on rheobase and chronaxie. Data are reported as means [+ or -] SD.
The chronaxie time had a larger variability, with percent differences ranging from 3 to 137 percent.
The average chronaxie time was 628 [+ or -] 300 ps.
Previous studies have reported chronaxie values or strength-duration time constants of sensory nerves averaging 300-650 ps using current-controlled stimulation from the skin surface [13-14].
Calculating the duration threshold while setting the voltage amplitude higher provided data points further up the curve and may have improved the chronaxie calculation even though qualitatively the curves were still similar.
Chronaxie calculated from current-duration and voltageduration data.