File:Diseases of the nervous system - a text-book of neurology and psychiatry (1915) (14759734336).jpg

Identifier: diseasesofnervo00jell (find matches)
Title: Diseases of the nervous system : a text-book of neurology and psychiatry
Year: 1915 (1910s)
Authors: Jelliffe, Smith Ely, 1866-1945 White, William A. (William Alanson), 1870-1937
Subjects: Mental Disorders Nervous System Diseases
Publisher: Philadelphia : Lea & Febiger
Contributing Library: Columbia University Libraries
Digitizing Sponsor: Open Knowledge Commons

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inally the optic radiations ending in thecalcarine region of the cortex make up the primary, secondary andtertiary incoming neurones of this pathway. (See Fig. 86.) The intricate symptomatology is dependent upon, and will bediscussed in accordance with, these anatomical divisions. The chiefsigns to be considered are night blindness, color blindness, dimness ofvision, blindness in one or both eyes, temporary or complete, scotomata,temporary or permanent hemianopsia, hemichromatopsia, hemiopia,mind blindness or optical agnosia, photophobia, hallucinations andillusions of sight, hysterical blindness, malingering of blindness,unilateral or bilateral. Retinitis.—Involvement of the first neurone is termed a retinitis.It may result from the extension of an inflammation or may be due Bailey, P., Flauberts Epilejisy, Proceedings of Charaka Society, New York, vol. iii.2 Clark, L. P., The Epilepsy of Dostoiewsky, Medical Record, New York, 1915. 184 SENSORI-MOTOR NEUROLOGY^CRANIAL NERVES Cortex
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Fig. 70.—Diagrammatic scheme of optic paths and chief connections at four levels.A, level of II and III nerves; B, level of IV nerve; C, level of VI and VII nerves,tegmentum of pons; D, spinal cord. Neurone 1. Receptors in rods and cones of retinaare not indicated in the diagram. Neurone 2. 2a, axones passing to pulvinar of sameside; 2b, axones passing to corpus quadrigeminum same side; 2c, axones passing toexternal geniculate of same side, all from temporal side of retina; from nasal side 2a,axones crossing in chiasm going to opposite external geniculate; 2/, axones crossingin chiasm to go to opposite anterior corpus quadrigeminum; 2g, axones crossing inchiasm to opposite pulvinar. Papillomacular bundle fibers partly crossed, partlyuncrossed (see Fig. 75). Neurone 3. Pulvinar axones to occipital cortex; 36, externalgeniculate axones to occipital lobes; 3e, d, e, corpora quadrigemina fibers, middle layerdecussating (Meynert) to median longitudinal fasciculus and forming tractus tect

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