Principles of Physiological Psychology Volume 1

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1904 edition. Excerpt: ...number: the prepeduncles, which start from the cerebellar nidus, and may be traced partly into the prosencephalic ganglia, partly to the cerebral cortex (e); and the fibres of the medipeduncles (bb'), which run direct from the cerebellar cortex to the cerebrum. These latter enter, first, into the grey nidi of the pons, and are by them brought into connexion, in some measure, with the brain ganglia, but most extensively with the cerebral cortex, and in that principally with the frontal region. The system is completed by the paths of connexion between nidal structures and cortex (rr) which belong exclusively to the cerebellum. scs 3 Fig. 71. Schema of the paths of conduction through pons and cerebellum. Cb Cerebellar cortex. N Dentatum of the cerebellum. P Grey masses of the pons. O Olive. gn Nidi of the slender funicles. en Nidi of the cuneate funicles. p1 Ventral column of the pyramids (uncrossed). p2 Lateral column of the pyramids (crossed), vv' Remains of the ventral columns, ss' Remains of the lateral columns, g Slender funicles or columns of Goll. C Cuneate funicles. g', c' Central continuations of these funicles. g1 Lemniscal path. / Conduction from olive to cerebellar nidus, cs Direct cerebellar path of the lateral columns, r Conduction from cerebellar nidus to cerebellar cortex, bb' Path of the medipeduncles. e' Path of the prepeduncles. kl Pyramidal decussation. k2 Lemniscal decussation. The general relations of these incoming and outgoing paths suggest that the cerebellum brings into connexion with one another conductions of different functional significance. This inference finds further support in the peculiar structure of the cerebellar cortex. The characteristic constituents of this region are, as we saw above (Fig. 15, p....