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Development of the finer structure and fiber connections of the globus pallidus, corpus of Luys and substantia nigra, in the pig

✍ Scribed by Ralph F. Shaner

Publisher
John Wiley and Sons
Year
1936
Tongue
English
Weight
889 KB
Volume
64
Category
Article
ISSN
0021-9967

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✦ Synopsis

The three nuclei which are the subjects of this paper form a functional group which has been much studied in normal and pathological adult brains, with conflicting results. They do not seem to have been studied in embryonic material impregnated by silver methods. I have studied two parallel series of pig embryos ranging from 11 mm. to birth; the one series stained by various cytological stains, the other impregnated by the Cajal method. The results show nothing very novel, but they do help resolve some of the confusion that has issued from adult work, and afford a basis for experimental approach that may clarify matters further.

DEVELOPMENT OF THE NUCLEI

Globus pallidus

That ventrolateral expansion of the telencephalon which is usually labeled 'corpus striatum' really includes the pyriform area, the septa1 nuclei, and other smaller centers. The areas to be occupied by the globus pallidus and other larger centers are first marked out by fiber bundles. Beginning in a 16-mm. embryo a strio-thalamic bundle penetrates the center of the striatal mass (fig. 1). Reinforced by cortical fibers it be-213

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