. A treatise on nervous and mental diseases, for students and practitioners of medicine. The three peduncles of the cerebellum. From IIirkchkkld and Corpora quadrigemina. 5. Superior cerebellar peduncles. 7. Middle ;. Inferior peduncles or restiform bodies. 1. Rhoinboidal fossa of the fourth Striae acousticae. 4. Columns of Goll. fi. Lemniscus. 42 INTRODUCTORY, it must be borne in miud, was not himself very positive aboutthem. In this diagram it will be seen that the different corticalregions have commissural fibres, so-called arciform fibres, whichare ana
. A treatise on nervous and mental diseases, for students and practitioners of medicine. The three peduncles of the cerebellum. From IIirkchkkld and Corpora quadrigemina. 5. Superior cerebellar peduncles. 7. Middle ;. Inferior peduncles or restiform bodies. 1. Rhoinboidal fossa of the fourth Striae acousticae. 4. Columns of Goll. fi. Lemniscus. 42 INTRODUCTORY, it must be borne in miud, was not himself very positive aboutthem. In this diagram it will be seen that the different corticalregions have commissural fibres, so-called arciform fibres, whichare analogous to the commissural fibres of the hemispheres. Thesecerebellar commissural fibres are called the dentritic tracts. Theircourse is very indistinct except at the point of decussation. Ex-ternal to the ciliary body is a mass of fibres resembling wool,and hence it is called the fleece. The superior peduncles enterthe ciliary body and break up into a network of intra-ciliary fibres,which is connected either directly or through ganglion cells with Fig. Diagram of cerebellar nerve fibres, explaining the origin of the cerebellar peduncles. the fleece, and from this intra-ciliary network fibres pass to thesuperior peduncles, and through them to the cortex of the cere-bellum. The superior peduncles are thus supposed to be composedmostly of intra-ciliary fibres, extra-ciliary fibres, and fibres fromthe cerebellar hemispheres. The restiform bodies have their chieforigin in the fleece, and are therefore mainly extra-ciliary fibres of the restiform bodies from the spinal cord, chieflyin the central portion, pass partly to the cortex of the vermis, andpartly around the corpus dentatum from without inward over tothe central portion of the vermis, where they are lost between the twonuclei globosi. Another band of fibres arises near the nucleus glo-bosus, passes to the outer wall of the fourth ventricle on the inwardside of the posterior peduncles, the most anterior fibres
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