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nodes of Ranvier

(Encyclopedia)nodes of Ranvier: see nervous system. ...

norepinephrine

(Encyclopedia)norepinephrine nôrˌĕpīnĕfˈrən [key], a neurotransmitter in the catecholamine family that mediates chemical communication in the sympathetic nervous system, a branch of the autonomic nervous sys...

spastic paralysis

(Encyclopedia)spastic paralysis, form of paralysis in which the part of the nervous system that controls coordinated movement of the voluntary muscles is disabled. In spastic paralysis the nerves controlling muscle...

Jelliffe, Smith Ely

(Encyclopedia)Jelliffe, Smith Ely jĕˈlĭf [key], 1866–1945, American neurologist and psychiatrist, b. New York City, M.D. Columbia, 1889. He was consultant at Manhattan State Hospital and at Kings Park State Ho...

neuron

(Encyclopedia)neuron, specialized cell in animals that, as a unit of the nervous system, carries information by receiving and transmitting electrical impulses. ...

dendrite

(Encyclopedia)dendrite: see nervous system; synapse. ...

axon

(Encyclopedia)axon: see nervous system; synapse. ...

Mitchell, Silas Weir

(Encyclopedia)Mitchell, Silas Weir, 1829–1914, American physician and author, b. Philadelphia, M.D. Jefferson Medical College, 1850, studied in Paris. A pioneer in the application of psychology to medicine, he wo...

neuralgia

(Encyclopedia)neuralgia no͝orălˈjə, nyo͝o– [key], acute paroxysmal pain along a peripheral sensory nerve. Unlike neuritis, there is no inflammation or degeneration of nerve tissue. Neuralgia occurs commonly ...

Adrian, Edgar Douglas Adrian, Baron

(Encyclopedia)Adrian, Edgar Douglas Adrian, Baron, 1889–1977, English physiologist, M.D. Trinity College, Cambridge, 1915. He was research professor (1929–37) of the Royal Society and professor of physiology (1...