Columbia Encyclopedia

Search results

277 results found

psychological test

(Encyclopedia)psychological test, any of a variety of testing procedures for measuring psychological traits and behavior, or for studying some specialized aspect of ability. Several forms of testing have arisen fro...

MacEwen, Sir William

(Encyclopedia)MacEwen, Sir William məkyo͞oˈən [key], 1848–1924, Scottish surgeon. A professor of surgery at the Univ. of Glasgow, he was noted for his work on bone grafting, on the radical cure of hernia, and...

migraine

(Encyclopedia)migraine mīˈgrān [key], headache characterized by recurrent attacks of severe pain, usually on one side of the head. It may be preceded by flashes or spots before the eyes or a ringing in the ears,...

nervous system

(Encyclopedia)CE5 Nerve cell CE5 Nervous system nervous system, network of specialized tissue that controls actions and reactions of the body and its adjustment to the environment. Virtually all members of ...

Calverley, Charles Stuart

(Encyclopedia)Calverley, Charles Stuart, 1831–84, English poet and translator. Expelled from Oxford for a youthful prank, he earned academic honors at Cambridge. He became famous for the wit and erudition of his ...

Hartley, David

(Encyclopedia)Hartley, David, 1705–57, English physician and philosopher, founder of associational psychology. In his Observations on Man (2 vol., 1749) he stated that all mental phenomena are due to sensations a...

Dandy, Walter Edward

(Encyclopedia)Dandy, Walter Edward, 1886–1946, American neurosurgeon. Having studied with Harvey Cushing at Johns Hopkins, Dandy soon made himself a notable figure in the developing specialty of neurosurgery. His...

antianxiety drug

(Encyclopedia)antianxiety drug, drug administered for the relief of anxiety. Although their action is not fully understood, most antianxiety medications appear to affect the action of neurotransmitters in the brain...

cerebral palsy

(Encyclopedia)cerebral palsy sərēˈbrəl pôlˈzē [key], disability caused by brain damage before or during birth or in the first years, resulting in a loss of voluntary muscular control and coordination. Althou...

ataxia

(Encyclopedia)ataxia ətăkˈsēə [key], lack of coordination of the voluntary muscles resulting in irregular movements of the body. Ataxia can be brought on by an injury, infection, or degenerative disease of the...