Lectures on nervous diseases from the standpoint of cerebral and spinal localization, and the later methods employed in the diagnosis and treatment of these affections . ^peduncular fibres,^^because they help to form the stem of the brain, or the crus cerebri (seeFigs. 1 and 6). A fourth set may be said to comprise those fibres that are associateddirectly with the organs of special sense, the nose, eye, ear, tongue, andskin. Some of these belong to the peduncular group. Finally, a fifth set, known as the fornix, serves to connect the corti-cal cells of the temporal lobe of each cerebral hemisp
Lectures on nervous diseases from the standpoint of cerebral and spinal localization, and the later methods employed in the diagnosis and treatment of these affections . ^peduncular fibres,^^because they help to form the stem of the brain, or the crus cerebri (seeFigs. 1 and 6). A fourth set may be said to comprise those fibres that are associateddirectly with the organs of special sense, the nose, eye, ear, tongue, andskin. Some of these belong to the peduncular group. Finally, a fifth set, known as the fornix, serves to connect the corti-cal cells of the temporal lobe of each cerebral hemisphere with a inass ofcells buried deeply within the corresponding hemisphere, known as theoptic thalamus. The function of these peculiarly arranged fibres is notyet determined with positiveness. We have already discussed the role which the nerve fibres play inconnection with the brain cells. They are the channels of transmission 18 LECTURES ON NERVOUS DISEASES. of nerve impulses. Some curry impressions of a sensory character;hence their currents travel from peripheral parts to the cells of the convey motor impulses from the brain cells to the Fig 6-a Diagram Designed by the Author to Sho^v the Genkral Arrangement ofTHE Fibres OP THE Cekeero-Spinal System. (Modified from ) The shadedporUons represent the collections of gray matter. (In the left side of the diagram, the ^^«-^TrvfiirTof the crus are traced upward from the spinal cord to different portions of theSnm;; on the r^ht side, the ,.otory^^,res are similarly represented ^^i--^^^ =>-^^^in desisnatine the sensory and ca,i!i>//ss!res : the t>ioio>-_^i»-es are lettered in smallvpe The lorticaTlayeMs shown at the periphery of the cerebral section, with commis-si fibred (ifconnaJting homologous regions of the hemispheres and associating hbres{) connecting different convolutions of each hemisphere, , Caudate nucleus ol the THE NERVE FIBRES. 19 CORPUS striatum; L. N., ieniicu/a
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