Diseases of the nervous system : a text-book of neurology and psychiatry . the hand and tendencies to tremor of the hand on 1 Thesis, Stuttgart, 1902. 2 Arch. f. Psych., xlvii. ^ Deut. Zeitschrift f. Nervenheilkunde, vols, xxi, xxii, xxiii. LOCAL SYMPTOMS—CENTRAL CONVOLUTIONS 503 the tumor side. In a third of the cases, epileptiform attacks, oftenJacksonian, occur, from pressure on the motor area. Central Convolutions.—^The functions chiefly involved are thoseof the voluntary muscular activity, hence paresis, paralysis, of this region are never latent. Irritative phenomena, spasm
Diseases of the nervous system : a text-book of neurology and psychiatry . the hand and tendencies to tremor of the hand on 1 Thesis, Stuttgart, 1902. 2 Arch. f. Psych., xlvii. ^ Deut. Zeitschrift f. Nervenheilkunde, vols, xxi, xxii, xxiii. LOCAL SYMPTOMS—CENTRAL CONVOLUTIONS 503 the tumor side. In a third of the cases, epileptiform attacks, oftenJacksonian, occur, from pressure on the motor area. Central Convolutions.—^The functions chiefly involved are thoseof the voluntary muscular activity, hence paresis, paralysis, of this region are never latent. Irritative phenomena, spasms,convulsions, speak for cortical locations; paralysis for deeper-seatedlesions involving the pyramidal paths from the motor areas. Smalltumors, cortically located, cause isolated Jacksonian attacks; themore extended the tumor the more widespread the muscular involve-ment; even small tumors, however, may cause widespread Jacksonianor grand mal symptoms. Often the first observed motion accompaniedby tingling affords a clue as to the more definite localization of the. Fig. 246.—Depression in brain after removal of a frontal tumor. (Goodhart.) tumor; again an orderly and uniform progression in the developmentof a Jacksonian attack is valuable in localization. Monoplegias^ and monopareses are not infrequent from small lesions,and in the beginning of the tumor growth. Th€ slow extension of theparesis or paralysis is of diagnostic moment. Advancing hemiplegiais often accompanied by the vasomotor phenomena seen in hemor-rhage—especially in deep-seated lesions. The usual signs of an organicparalysis {q. v.) are present. Psychical symptoms of general nature are not infrequent. Occa-sionally large tumors will cause a Korsakow syndrome. Katatonic 1 Bergmark, Monoplegia, Brain, 1910. 504 TUMORS OF THE BRAIN symptoms may also appear. Sensory phenomena are frequent inpostcentral convolution tumors. The phenomena have been exten-sively described on p. 479, when speaking of sensory c
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