Compendium of regional diagnosis in affectations of the brain and spinal cord / Translated by F.S. Arnold.

  • Bing, Robert.
Date:
1913
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Licence: In copyright

Credit: Compendium of regional diagnosis in affectations of the brain and spinal cord / Translated by F.S. Arnold. Source: Wellcome Collection.

Provider: This material has been provided by UCL Library Services. The original may be consulted at UCL (University College London)

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    Among the association tracts which connect separate areas of the cerebral cortex with one another, the so-called com- missural tracts take a special place, inasmuch as they co- ordinate the action of symmetrically placed areas of the two hemispheres. The largest commissural complex is the corpus callosum; the anterior commissure, however, also forms an important transverse connection. Among the neuron systems which, apart from the cortico- cortical connections, enter into relation with the cerebral cortex, the following deserve mention : Fig. 60. Rindervfeld Motor, Sensory, and Special Sense Areas in the Mesial Cortex. ||||il!li!-illHl| = Motor area. I I = Sensory area. = Special sense area. V = visual, 0. = olfactory area. 1. Corticofugal. — (l) Cortico-Nuclear—i.e., the supra- nuclear fibres of the motor cranial and spinal nerves. The latter = the cortico-spinal tracts. (2) Cortico-Suhcortical.—These fibres pass, in part directly, in part through intercalated centres, to the subcortical centres, the thalamus, the red nucleus of the tegmentum, the roof of the mid-brain, the cerebellum, etc. Their con- necting neuron systems are, among others, the subcortico-