cogwheel phenomenon
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cogwheel rigidity — rigidity of a muscle that gives way in a series of little jerks upon being passively stretched, analogous to the ratcheting movement when a spring loaded rod drops into the successive notches of a cog. Called also cogwheel phenomenon or sign and… … Medical dictionary
phenomenon — 1. A symptom; an occurrence of any sort, whether ordinary or extraordinary, in relation to a disease. 2. Any unusual fact or occurrence. [G. phainomenon, fr. phaino, to cause to appear] adhesion p. a p. manifested by the adherence of antigen… … Medical dictionary
Negro phenomenon — cogwheel rigidity … Medical dictionary
Negro phenomenon (sign) — Ne·gro phenomenon (sign) (naґgro) [Camillo Negro, Italian neurologist, 1861–1927] see cogwheel rigidity, under rigidity … Medical dictionary
Hypertonia — This article is about increased activity and resistance in muscles. For increased blood pressure, see Hypertension. Hypertonia Classification and external resources ICD 10 P94.1 ICD 9 … Wikipedia
Signs and symptoms of Parkinson's disease — Illustration of the Parkinson disease by Sir William Richard Gowers from A Manual of Diseases of the Nervous System in 1886 showing the characteristic posture of PD patients Signs and symptoms of Parkinson s disease are varied. Parkinson s… … Wikipedia
Rail transport — Railroad and Railway both redirect here. For other uses, see Railroad (disambiguation). Rail transport is the conveyance of passengers and goods by means of wheeled vehicles specially designed to run along railways or railroads. Rail transport is … Wikipedia
Switzerland — /swit seuhr leuhnd/, n. a republic in central Europe. 7,248,984; 15,944 sq. mi. (41,294 sq. km). Cap.: Bern. French, Suisse. German, Schweiz. Italian, Svizzera. Latin, Helvetia. * * * Switzerland Introduction Switzerland Background: Switzerland s … Universalium
Speed of light — The speed of light in the vacuum of free space is an important physical constant usually denoted by the letter c . [NIST and BIPM practice is to use c 0 for the speed of light in vacuum in accord with international standard ISO 31 5. See… … Wikipedia
Wilson's disease — Classification and external resources A Kayser Fleischer ring (the brown ring on the edge of the iris) is common in Wilson s disease, especially when neurological symptoms are present ICD … Wikipedia
