rheobasen.

Brit.

/ˈriːə(ʊ)beɪs/, U.S.

/ˈriəˌbeɪs/

Origin: Formed within English, by compounding; modelled on a French lexical item. Etymons: rheo- comb. form, base n.¹

Etymology: < rheo- comb. form + base n.¹, after French rhéobase (L. Lapicque 1909, in Comptes rendus Soc. de Biol. 67 283).

Physiology.

The lowest strength of electrical current (of infinitely prolonged duration) required to excite a muscle or nerve. Cf. chronaxie n.

ΘΚΠ

the world > life > biology > biological processes > action of nervous system > [noun] > electrical phenomena

neuroelectricity1914

rheobase1917

bioelectricity1925

monophasicity1932

Berger rhythm1934

skin potential1934

brain wave1935

beta rhythm1936

beta waves1936

theta1944

hyperpolarization1946

hyperpolarizing1950

conductance1966

biopower1978

the world > matter > physics > electromagnetic radiation > electricity > electricity in living organisms > [noun] > minimum stimulus

rheobase1917

1917 Jrnl. Radiol. & Electrotherapy 21 380 The rheobase is equal to the strength of current required to excite when the duration is infinite.., and we may consider it as depending upon the absolute excitability of the tissue in question.

1944 Electronic Engin. 17 27/2 In measuring chronaxie a current value is found which, when caused to flow for infinite time, will produce a minimal contraction in the muscle under observation. (For this purpose any period in excess of one second can be referred to as infinity.) This current value is called the Rheobase.

1965 S. Ochs Elem. Neurophysiol. ii. 21 A utilization or utilized time also occurs during the..shorter times of excitation found when using stimulating pulses stronger than rheobase.

1998 Neuroscience 86 301 The nerve injury led to a significant reduction of the rheobase.

Derivatives

ˈrheobasic adj. [after French rhéobasique (1916 or earlier)]

ΘΚΠ

the world > life > biology > biological processes > action of nervous system > [adjective] > electrical phenomena

electromotive1800

neuroelectric1843

bioelectric1849

rheoscopic1851

anelectrotonic1862

monophasic1888

off1903

on1903

bioelectrical1910

neuroelectrical1914

rheobasic1917

myoelectric1955

myoelectrical1970

the world > matter > physics > electromagnetic radiation > electricity > electricity in living organisms > [adjective] > relating to stimulus

rheobasic1917

1917 F. Rothwell tr. J. Tinel Nerve Wounds iii. 56 A healthy muscle, with rapid chronaxie, contracts with the short wave as soon as it reaches the rheobasic threshold.

1965 S. Ochs Elem. Neurophysiol. ii. 20 When a rheobasic current is used, the nerve actually becomes excited a short time after the onset of the step pulse current.

2006 D. I. Stephanova in C. A. Murray Amytrophic Lateral Sclerosis vi. 170 Nodal and internodal rheobasic currents are considerably different for the normal and ALS [= amytrophic lateral sclerosis] cases.

This entry has been updated (OED Third Edition, June 2010; most recently modified version published online March 2022).

单词	rheobase
释义	rheobasen. Brit. /ˈriːə(ʊ)beɪs/, U.S. /ˈriəˌbeɪs/ Origin: Formed within English, by compounding; modelled on a French lexical item. Etymons: rheo- comb. form, base n.¹ Etymology: < rheo- comb. form + base n.¹, after French rhéobase (L. Lapicque 1909, in Comptes rendus Soc. de Biol. 67 283). Physiology. The lowest strength of electrical current (of infinitely prolonged duration) required to excite a muscle or nerve. Cf. chronaxie n. ΘΚΠ the world > life > biology > biological processes > action of nervous system > [noun] > electrical phenomena neuroelectricity1914 rheobase1917 bioelectricity1925 monophasicity1932 Berger rhythm1934 skin potential1934 brain wave1935 beta rhythm1936 beta waves1936 theta1944 hyperpolarization1946 hyperpolarizing1950 conductance1966 biopower1978 the world > matter > physics > electromagnetic radiation > electricity > electricity in living organisms > [noun] > minimum stimulus rheobase1917 1917 Jrnl. Radiol. & Electrotherapy 21 380 The rheobase is equal to the strength of current required to excite when the duration is infinite.., and we may consider it as depending upon the absolute excitability of the tissue in question. 1944 Electronic Engin. 17 27/2 In measuring chronaxie a current value is found which, when caused to flow for infinite time, will produce a minimal contraction in the muscle under observation. (For this purpose any period in excess of one second can be referred to as infinity.) This current value is called the Rheobase. 1965 S. Ochs Elem. Neurophysiol. ii. 21 A utilization or utilized time also occurs during the..shorter times of excitation found when using stimulating pulses stronger than rheobase. 1998 Neuroscience 86 301 The nerve injury led to a significant reduction of the rheobase. Derivatives ˈrheobasic adj. [after French rhéobasique (1916 or earlier)] ΘΚΠ the world > life > biology > biological processes > action of nervous system > [adjective] > electrical phenomena electromotive1800 neuroelectric1843 bioelectric1849 rheoscopic1851 anelectrotonic1862 monophasic1888 off1903 on1903 bioelectrical1910 neuroelectrical1914 rheobasic1917 myoelectric1955 myoelectrical1970 the world > matter > physics > electromagnetic radiation > electricity > electricity in living organisms > [adjective] > relating to stimulus rheobasic1917 1917 F. Rothwell tr. J. Tinel Nerve Wounds iii. 56 A healthy muscle, with rapid chronaxie, contracts with the short wave as soon as it reaches the rheobasic threshold. 1965 S. Ochs Elem. Neurophysiol. ii. 20 When a rheobasic current is used, the nerve actually becomes excited a short time after the onset of the step pulse current. 2006 D. I. Stephanova in C. A. Murray Amytrophic Lateral Sclerosis vi. 170 Nodal and internodal rheobasic currents are considerably different for the normal and ALS [= amytrophic lateral sclerosis] cases. This entry has been updated (OED Third Edition, June 2010; most recently modified version published online March 2022). < n.1917
随便看	silverspots silverspotted silversprig silverstick silverstriped silverstudded silversword silverswordes silverswords silvertail silvertailed silverthroned silvertip silvertips silvertongue silvertongued silvertree silverware silverwares silverwashed silverweed silverweeds silverwhite silverwhite cobalt silverwiry