commissural

The dorsal epidermal nerve-tract is continued in front into the ventral wall of the collar nerve-tube, and at the point of junction there is a circular commissural thickening following the posterior rim of the collar and affording a special connexion between the dorsal and ventral nerve-tracts.

Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 2 "Baconthorpe" to "Bankruptcy" Various

_In the cerebellum_ both association and commissural fibers are found.

Physiology and Hygiene for Secondary Schools Francis M. Walters

This center is connected with the one in the opposite side by commissural fibers which course in the optic radiation and the splenium of the corpus callosum.

IX. Neurology. 4e. Composition and Central Connections of the Spinal Nerves 1918

The Fibræ Propriæ of the cerebellum are of two kinds: (1) commissural fibers, which cross the middle line at the anterior and posterior parts of the vermis and connect the opposite halves of the cerebellum; (2) arcuate or association fibers, which connect adjacent laminæ with each other.

IX. Neurology. 4a. The Hind-brain or Rhombencephalon 1918

The tangential fibers consist of (a) the collaterals of the pyramidal and polymorphous cells and of the cells of Martinotti; (b) the branching axons of Golgi’s cells; (c) the collaterals and terminal arborizations of the projection, commissural, or association fibers.

IX. Neurology. 4c. The Fore-brain or Prosencephalon 1918

The hypoglossal nuclei of the two sides are connected by many commissural fibers and also by dendrites of motor cells which extend across the midline to the opposite nucleus.

IX. Neurology. 4e. Composition and Central Connections of the Spinal Nerves 1918

A small portion, lying antero-inferiorly between the corpus callosum and fornix, is not invaded by the commissural fibers; it remains thin, and later a cavity, the cavity of the septum pellucidum, forms in its interior.

IX. Neurology. 2. Development of the Nervous System 1918

The dorsal nucleus (nucleus of the ala cinerea) and the posterior continuation of it into the commissural nucleus of the ala cinerea constitute probably the so-called respiratory and vaso-motor center of the medulla.

IX. Neurology. 4e. Composition and Central Connections of the Spinal Nerves 1918

Hence the gray substance forms the essential constituent of all the ganglionic centers, both those in the isolated ganglia and those aggregated in the brain and medulla spinalis; while the white substance forms the bulk of the commissural portions of the nerve centers and the peripheral nerves.

IX. Neurology. 1. Structure of the Nervous System 1918

About one-fourth of all the fibers of the fimbria are large projection fibers, the other three-fourths consist of fine commissural fibers which pass from the hippocampus of one side through the fimbria and hippocampal commissure (ventral psalterium or lyre), to the fimbria and hippocampus of the opposite side where they penetrate the pyramidal layer and terminate in the stratum radiatum.

IX. Neurology. 4e. Composition and Central Connections of the Spinal Nerves 1918