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单词 hoffmann phenomenon
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Hoffmann('s) phenomenon
3. Used attributively and in the possessive to designate various signs, etc., discovered or described by Johann Hoffmann, as Hoffmann('s) atrophy = Werdnig–Hoffmann n. ('s) atrophy; Hoffmann('s) sign: (a) increased sensitivity of the sensory nerves to mechanical stimulation; also called Hoffmann('s) phenomenon, Hoffmann('s) symptom; (b) a type of reflex action of the fingers; also called digital reflex, Hoffmann('s) reflex; also elliptical.
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the world > life > biology > biological processes > action of nervous system > [noun] > reflex action > type of
ankle jerk1882
spinal reflex1898
research knee-jerk1899
Hoffmann('s) reflex1900
unconditioned reflex1906
startle reflex1917
startle response1933
the world > health and disease > ill health > a disease > disorders of internal organs > disordered sensation > [noun] > irritability
irritation1686
irritability1769
irritableness1805
worry1897
Hoffmann('s) symptom1900
hyperirritability1913
1900 W. A. N. Dorland Amer. Illustr. Med. Dict. 600/2 Hoffmann's s[ign], increased mechanic irritability of the sensory nerves in tetany.
1908 A. Gordon Dis. Nerv. Syst. xxi. 399 Hoffmann's Sign.—Pressure upon sensory nerve produces marked pain.
1908 A. Church Dis. Nerv. Syst. 916 (heading) Mechanical Hyperirritability (Chvostek's phenomenon, Hoffmann's phenomenon).
1910 W. Osler & T. McCrae Syst. Med. VII. 73 The sensory nerves may also be hypersensitive, and tapping at Valleix's points then calls forth abnormally intense sensations (Hoffmann's symptom).
1916 Jrnl. Nerv. & Mental Dis. 44 51 During a period spent at the Neurological Institute of New York, I was told of a reflex of the fingers which was designated by the term ‘Hoffmann's Sign’.
1933 Jrnl. Nerv. & Mental Dis. 77 598 Of the 26 patients with the post-encephalitic Parkinson syndrome, the Hoffmann reflex was positive in 6 and the Babinski positive in 4.
1939 W. Haymaker tr. R. Bing Textbk. Nerv. Dis. iv. 150 Increased galvanic irritability of sensory nerves, occurring at times in patients with tetany, is known as Hoffmann's phenomenon.
1950 R. N. DeJong Neurol. Exam. xxxvi. 593 The Hoffmann is a positive sign of definite significance, even though it may occur on occasion in the absence of organic disease.
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