单词 | electrogenic |
释义 | electrogenicadj. 1. Medicine. Resulting from electrical stimulation. ΚΠ 1847 M. Hall in Lancet 12 June 612/2 If a mild voltaic current be made to pass through the denuded and insulated spinal marrow, or lumbar nerves, in the frog, for ten or twenty minutes, and then be withdrawn, the lower limbs are thrown into a state of tetanoid spasm. This condition of the nervous centre or muscular nerve I have designated the electrogenic. 1848 M. Hall in Retrospect Med. 18 84 The electrogenic condition of the spinal marrow itself is the type of the class of certain convulsive affections which arise from arachnitis at the base of the brain, spinal arachnitis, &c. 1949 Jrnl. Compar. & Physiol. Psychol. 42 502 Recent clinical experience with modern electroconvulsive treatment has also indicated some possible relationships between the repetitive induction of electrogenic convulsions and alterations in menstrual and other physiological functions. 1969 Brain 92 324 Tonic spasm was not restricted to the hind-quarters, as was usually the case with the electrogenic seizures. 2006 Epilepsy Res. 68 Suppl. No. 1 S7/1 (caption) Data derived from a study in the Mouse Phenome Database, showing the relative sensitivity to electrogenic seizures. 2. a. Producing electricity; of or relating to the production of electricity, esp. in living tissues; Zoology (of an organ, tissue, etc.) generating an electrical impulse or discharge; (of a fish) having such an organ or tissue. ΘΚΠ the world > animals > fish > [adjective] > that produce electricity electrogenic1848 the world > health and disease > healing > medical treatment > treatment by electricity > [adjective] > types of electrical treatment electrogenic1848 cataphoretic1889 diathermic1910 iontophoretic1919 short wave1935 electroconvulsive1943 1848 G. Bird Elements Nat. Philos. (ed. 3) xx. 278 Whatever may be the ultimate destination of this large quantity of electricity, it is at least remarkable, that a muscle should be really an electrogenic apparatus. 1888 Proc. Physical Soc. 10 92 The exact reversibility of these processes indicates the constancy of the partition of ‘free’ and ‘bound’, or electrogenic and thermogenic energy. 1890 F. P. Foster Med. Dict. II. 1414/1 Electrogenic,..productive of electricity (said of animal tissues in general, and particularly of the electrical apparatus of certain fishes). 1935 Discovery Nov. 327/2 The organ as a whole resembles a beehive, for the electrogenic units or elements are grouped in batteries of prismatic form. 1965 B. E. Freeman tr. A. Vandel Biospeleol. xxvii. 446 The electrogenic fish creates around itself..an equipotential electric field. 2002 Jrnl. Physiol. 96 485/2 In Synodontis the EOD [= electric organ discharge] could be biphasic..instead of the linear arrays of electrogenic cells more typical of electrogenic fish. b. Physiology. Producing an electrochemical potential gradient across a cell membrane; of, relating to, or designating such a potential gradient. ΘΚΠ the world > life > biology > biological processes > action of nervous system > [adjective] > electrical phenomena > producing electricity electrodermal1935 electrogenic1962 1962 W. S. Rehm in Amer. Jrnl. Physiol. 203 63/2 A separate site theory according to which the Cl− and H+ ions are transported by separate processes in the membrane and in which it is postulated that each active process is electrogenic..offers a satisfactory explanation for a large number of observations. 1969 Jrnl. Physiol. 201 496 It has already been shown in a variety of nerve and muscle preparations that the sodium pump can be ‘electrogenic’, that is, it can act as a current source in the cell membrane. 1984 J. F. Lamb et al. Essent. Physiol. (ed. 2) i. 23 It also seems possible that such pumps can produce a potential directly—the electrogenic potential. 1989 B. Alberts et al. Molecular Biol. Cell (ed. 2) vi. 306 Since the Na+-K+ ATPase drives three positively charged ions out of the cell for every two it pumps in, it is ‘electrogenic’; that is, it drives a net current across the membrane. 2005 Compar. Biochem. & Physiol. A. 142 367/2 CA [= carbonic anhydrase] participates in electrogenic ion transport when the gill epithelium is submitted to hypo-osmotic stress. Derivatives eˌlectrogeˈnicity n. the property or fact of being electrogenic; the degree to which something is electrogenic. ΘΚΠ the world > life > biology > biological processes > action of nervous system > [noun] > electrical phenomena > production of electricity electrogenesis1890 electrogenicity1967 1967 Jrnl. Gen. Physiol. 50 739 Two manners of looking at transport systems may be adopted in discussions of electrogenicity. 1969 Proc. Soc. Exper. Biol. & Med. 130 1048 (title) A confirmation of electrogenicity of frog gastric mucosa by using methoxyflurane. 2007 Molecular & Cellular Cardiol. 42 293/1 A direct effect of acidosis, presumably due to a change in the electrogenicity of the NCX [= Na+/Ca2+ exchange] protein, seems to be a plausible explanation. This entry has been updated (OED Third Edition, June 2008; most recently modified version published online March 2022). < adj.1847 |
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