chronaxien.
/ˈkrəʊnəksi/ Physiology.
The minimum time required by a constant electric current of twice the threshold intensity to excite a muscle or nerve fibre, used as an index of excitability. Also attributive.
ΘΚΠ
the world > life > biology > biological processes > stimulation > [noun] > minimum stimulus to produce response > time constant for
chronaxie1917
the world > matter > physics > electromagnetic radiation > electricity > electricity in living organisms > [noun] > time taken to excite fibre
chronaxie1917
1917 Sci. Amer. Suppl. LXXXIII. 389/2 To this constant representing a period of time Lapicque gives the name of chronaxia. For a given kind of muscle the chronaxia has an invariable value, about one-tenth that of the useful time.
1922 Nature 5 Jan. 30/2 Chronaxy of the sensitive rachidian nerves of the upper limb in man.
1924 Nature CXIII. 427/1 The need for a review of the work on chronaxie.
1944 Electronic Engin. 17 27 Chronaxie is defined as that period of time for which a current, having twice the rheobasic value, must flow in order to produce the same minimal contraction.
1950 Electronic Engin. 22 88 The response to electrical stimulation of muscle and nerve (chronaxie measurement).
This entry has not yet been fully updated (first published 1972; most recently modified version published online June 2021).
<
n.1917