On the diseases and derangements of the nervous system : in their primary forms and in their modifications by age, sex, constitution, hereditary predisposition, excesses, general disorder, and organic disease / by Marshall Hall.

  • Hall, Marshall, 1790-1857.
Date:
1841
Catalogue details

Licence: Public Domain Mark

Credit: On the diseases and derangements of the nervous system : in their primary forms and in their modifications by age, sex, constitution, hereditary predisposition, excesses, general disorder, and organic disease / by Marshall Hall. Source: Wellcome Collection.

Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.

    68/452 (page 28)
    of coma, or of perverted imagination or judgment, every act of violence, must be referred to the condition, primary or secondary, of the cerebrum or cerebellum. 121. The facts which, in ^practical point of view, are the most important, are those determined by M. Magendie and M. riourens,—that it is impossible, by lacerations or other modes of injury of the cerebrum or cerehellum^ to induce either pain, or contraction in the muscular system. These organs are not endued with sensihilifij, or with the vis nervosa of Haller. They are the seat of a self-acting, automatic, sentient and motive principle—the ^vy;*}, or soul; but they are themselves incapable either of sensation, or of the production of motion. 122. M. Masrendie observes— Examine sur 1'animal vivant, le cerveau presente des proprietes remarquables, et bien eloignees de ce que I'imagination pourrait nous repre- sentor. Qui croirait, par exemple, que la plus grande partie des hemispheres, sinon la totality, est insensible aux piqures, dechiremens, sections, et meme aux cauterisations ? Cost pourtant un fait sur lequel I'experience ne laisse aucun doute. 123. Les lesions de la surface du cervelet montrent aussi que cet organe n'est point sensible*. 124. M. riourens observes, as the conclusion of his ex- periments, Ainsi, 1° les hemispheres cerebraux ne sent point susceptibles d'exciter immediament des contractions musculaires. 125. Haller et Zinnf I'avaient deja reconnu pour les parties superieures; Lorry J pour le corps calleux: je I'ai v^rifie pour tout I'^nsemble des hemispheres, les corps stries et les couches optiques. 126. C'est a tort qu'on a attribue la paralysie des iris a la lesion de ces dernieres parties. On pent les couper, ou les piquer sur tous les points, sans aboHr comme sans pro- voquer la contractilite des iris. 127. Quelques observateurs ont cru exciter des con- tractions et des convulsions, dans les mammiferes, par les • Precis de Physiologie, 1836, t. i, p. 236. t Memoires sur la Nature sensible et irritable des Parties du Corps animal; Lausanne, 1756 ; t. i—ii. X Acad, des Sciences, Mem. des savans strangers, t. iii.