Commissural fiber | |
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![]() Coronal cross-section of brain showing the corpus callosum at top and the anterior commissure below | |
Details | |
Identifiers | |
Latin | fibra commissuralis, fibrae commissurales telencephali |
NeuroNames | 1220 |
TA98 | A14.1.00.017 A14.1.09.569 |
TA2 | 5603 |
FMA | 75249 |
Anatomical terms of neuroanatomy |
The commissural fibers or transverse fibers are axons that connect the two hemispheres of the brain. Huge numbers of commissural fibers make up the commissural tracts in the brain, the largest of which is the corpus callosum.
In contrast to commissural fibers, association fibers form association tracts that connect regions within the same hemisphere of the brain, and projection fibers connect each region to other parts of the brain or to the spinal cord.[1]
The nerve fibres which make up the white matter of the cerebral hemispheres are categorized on the basis of their course and connections. They are association fibres, which link different cortical areas in the same hemisphere; commissural fibres, which link corresponding cortical areas in the two hemispheres; or projection fibres, which connect the cerebral cortex with the corpus striatum, diencephalon, brain stem and the spinal cord.