Psychiatry : a clinical treatise on diseases of the fore-brain : based upon a study of its structure, functions, and nutrition. Pt. 1 / by Theodor Meynert ; translated (under authority of the author) by B. Sachs.

Date:: 1885

Credit: Psychiatry : a clinical treatise on diseases of the fore-brain : based upon a study of its structure, functions, and nutrition. Pt. 1 / by Theodor Meynert ; translated (under authority of the author) by B. Sachs. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

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$starts from the upper wall of the anterior vesicle, or, in other words, from the superior and anterior walls of the thalamenccpha- lon, This superior wall does not develop into nerve tissue, but into a membrane from which the plexus chorioidei are developed. The thinning out of this constriction-ring at the fimbria gives lasting evidence of the transition of this ring into the superior membranous wall of the thalamcncephalon. Median Aspect of the Human Brain. Fr., Occ., Tm. Frontal, occipital, and temporal end of the hemisphere. Olf. Olfactory lobe. J5.cr. Sulcus cruciatus. ^.ttrt. Calloso-marginal sulcus. J5.occ. Internal occipital fissure. Sc. Calcarine fissure. JS. <9. ®. $\. Superior occipito-temporal fissure. S. &. i. Inferior occipito-temporal fissure. SI.2 Second temporal longitudinal con- volution. L.3 Median surface of the third frontal longitudinal convolution. Gf. Gyrus^ fornicatus. Qu. Lobus quadratus (prsecuneus, superior parietal lobe). Cun. Cuneus, superior occipital lobe. Gl. Gyrus glossiformis convolution of Burdach’s internal primary fasciculus. Fus. Gyrus fusiformis, convolution of Burdach’s inferior longi- tudinal fasciculus. L.3 L.3 Temporal longitudinal convolutions. Sub. Subiculum. cornu ammonis. Unc. Uncus. A. Amygdala. Fd. Facia dentata Tarini. Al. Alveus. D. Digitations of the cornu ammonis. Th. Section of optic thalamus. M. Section of cerebral medullary substance, d., a. Descending and ascending fornix. Trb. Corpus callosum (trabs cerebri). M. Medullary substance. J. Infundibulum. Ca. Anterior commissure. Sp. Septum pellucidutn. p. Its peduncle. II. Optic nerve. FI. Hypophysis cerebri. The cerebral fissure surrounding the optic thalamus is broadest behind the lowest portions of the descending crus of the fornix (Fig. 13, in front of a.), to permit the passage of the lateral choroidal plexus, and is here termed the foramen Monroi. The ascending crus of the fornix is also dissected out and rendered I$