Inhaltsangabe
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1917 Excerpt: ...The most superficial of these fibres constitute a band, called the ansa lenticularis, which enters the nucleus lenticularis, where it terminates. The remaining fibres pass outwards beneath the nucleus lenticularis to the cortex of the temporal lobe and island of Reil. Besides the thalamocortical fibres there are corticothalamic fibres, which pass from the various parts of the cerebral cortex into the optic thalamus, where they terminate in arborizations around the thalamic cells. Development.--The optic thalamus is developed as a thickening of the lateral wall of the thalamencephalon or diencephalon.' Subthalamic Tegmental Region.--This region represents the upward prolongation of the tegmental fibres of the crus cerebri beneath the posterior portion of the optic thalamus. The parts to be noted are as follows: upward prolongations of the red nucleus and substantia nigra of the tegmentum of the crus cerebri; the mesial fillet; the fibres of the superior peduncle of the cerebellum; and the corpus subthalamicum, or nucleus of Luys. The red nucleus and the substantia nigra gradually disappear, and are no longer visible at the level of the corpus albicans. The mesial fillet lies on the superficial and outer aspects of the red nucleus. The fibres of the superior peduncle of the cerebellum partly terminate in connection with the cells of the red nucleus, but many of them, surround it in the form of a capsule. Beyond the red nucleus the mesial fillet, fibres of the superior cerebellar peduncle, and fibres which issue from the red nucleus enter the inferior surface of the optic thalamus, and terminate in connection with the thalamic cells. Some of these fibres may pass through the optic thalamus into the internal capsule, and thence to the cortex of the Rolandic reg...
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Reseña del editor
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1917 Excerpt: ...The most superficial of these fibres constitute a band, called the ansa lenticularis, which enters the nucleus lenticularis, where it terminates. The remaining fibres pass outwards beneath the nucleus lenticularis to the cortex of the temporal lobe and island of Reil. Besides the thalamocortical fibres there are corticothalamic fibres, which pass from the various parts of the cerebral cortex into the optic thalamus, where they terminate in arborizations around the thalamic cells. Development.--The optic thalamus is developed as a thickening of the lateral wall of the thalamencephalon or diencephalon.' Subthalamic Tegmental Region.--This region represents the upward prolongation of the tegmental fibres of the crus cerebri beneath the posterior portion of the optic thalamus. The parts to be noted are as follows: upward prolongations of the red nucleus and substantia nigra of the tegmentum of the crus cerebri; the mesial fillet; the fibres of the superior peduncle of the cerebellum; and the corpus subthalamicum, or nucleus of Luys. The red nucleus and the substantia nigra gradually disappear, and are no longer visible at the level of the corpus albicans. The mesial fillet lies on the superficial and outer aspects of the red nucleus. The fibres of the superior peduncle of the cerebellum partly terminate in connection with the cells of the red nucleus, but many of them, surround it in the form of a capsule. Beyond the red nucleus the mesial fillet, fibres of the superior cerebellar peduncle, and fibres which issue from the red nucleus enter the inferior surface of the optic thalamus, and terminate in connection with the thalamic cells. Some of these fibres may pass through the optic thalamus into the internal capsule, and thence to the cortex of the Rolandic reg...
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