Lectures on localization in diseases of the brain, delivered at the Faculté de médecine, Paris, 1875 . ongation of the optic nerves. II. We will make a little digression upon this point inorder to ascertain what is known about the gray ganglia atthe base of the encephalon, outside of the brain proper, wherethe optic nerves originate. Here it seems proper to examine the exterior architectureof the parts which we are about to consider. After detaching the entire isthmus from the encephalon,leaving attached the, thalami optici, an examination of theposterior face of the preparation thus obtaine
Lectures on localization in diseases of the brain, delivered at the Faculté de médecine, Paris, 1875 . ongation of the optic nerves. II. We will make a little digression upon this point inorder to ascertain what is known about the gray ganglia atthe base of the encephalon, outside of the brain proper, wherethe optic nerves originate. Here it seems proper to examine the exterior architectureof the parts which we are about to consider. After detaching the entire isthmus from the encephalon,leaving attached the, thalami optici, an examination of theposterior face of the preparation thus obtained will discoveras follows : ist, anteriorly, on each side, are the thalami op-tici, which separate the third ventricles ; 2d, posteriorly, the See Gratiolet, Anat. comparee, t. II., p. 181 et suiv. Luys, loc. cit., p. 173. io6 DISEASES OF THE BRAIN. tubercula quadrigemina, both anterior and posterior; 3d,externally, the anterior conjunctive fibres connecting by theirinternal extremities with the anterior tubercula quadrigemina, ^ Ant .root of^ Optic thaJamus. (Corpusatriatum-- Arch, andthree pillars. aond Horn of JbimonibstJiomoflat. acdalions ofGratiolet.(qpticj FiC 32.—Radiations from the thalamus opticus.—(ffuj^enin.) the posterior conjunctive fibres connecting with the posteriortubercula quadrigemina. Then, in the same region, by raisingthe posterior extremity of the thalami optici, or pulvinar,maybe seen, internally, the internal geniculate body, and ex- CEREBRAL PORTION OF THE OPTIC NERVES. IO7 ternally, a gray mass, somewhat more voluminous, which isthe external geniculate body. Behind and above these parts are to be seen the loop ofReil, the processus cerebelli ad testes, the cerebral pedun-cles, the restiform bodies, and the middle cerebral pedun-cles. The internal and external geniculate bodies are notably thefirst two ganglia of gray substance with which the optic nervesenter into rapport on their way to the encephalon. The opticnerves po
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Keywords: ., bookcentury1800, bookdecade1870, bookpublishern, booksubjectbrain
