tract(redirected from mesencephalic tract of the trigeminal nerve)
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Related to mesencephalic tract of the trigeminal nerve: Mesencephalic nucleus of trigeminal nerve, spinal nucleus of trigeminal nerve, spinal tract of trigeminal nerve
in the central nervous system, any one of several groups of closely placed nerve fibers having a common morphological structure and common functions. Tracts are divided by function into associative tracts, which unite various sections of the cerebral cortex in the same hemisphere; commisural tracts, which connect both hemispheres and ensure their cooperative activity; and projection tracts, which unite the cerebral cortex with lower brain formations and, through them, with the periphery.