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Related to chronaxie: rheobase


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-European roots).]


(ˈkrəʊnæksɪ) or


(Physiology) physiol the minimum time required for excitation of a nerve or muscle when the stimulus is double the minimum (threshold) necessary to elicit a basic response. Compare rheobase
[C20: from French, from chrono- + Greek axia worth, from axios worthy, of equal weight]


or chro•nax•y

(ˈkroʊ næk si, ˈkrɒn æk-)

the minimum time that an electric current of twice the threshold strength must flow in order to excite a muscle or nerve tissue.
[1915–20; < French, =chron- chron- + -axie < Greek axía worth, value]
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References in periodicals archive ?
The authors of [42] numerically calculated the minimum current density peak in the cortex that elicits motor activation from which they estimated the rheobase current and the chronaxie time to determine the strength-duration curve.
Electrophysiological parameters measured in extracellular recording were rheobase, chronaxie, peak-to-peak amplitude (PPA), and conduction velocity of CAP components.
The authors found no important alteration in various parameters such as CAP area, rheobase and chronaxie; however, they reported an increase in the NCV in the group that was treated with selenium compared with the control group.
In contrast, other preclinical studies have demonstrated no beneficial effects of chronaxie-based ES (frequency: 20 Hz; pulse duration: twice the chronaxie value; 3 s on, 6 s off) on nerve crush-induced muscle fiber atrophy and muscle excitability [11].
A strength-duration threshold curve along with its rheobase and chronaxie values was constructed from the threshold points.
Sensations, such a pressure, heat, tickle, can all be produced by varying the chronaxie, an electrical pulse varyin g in length of time.