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the triangular subcallosal plate of commissural fibers resulting from the converging of the right and left fornix bundles that exchange numerous fibers and that curve back in the contralateral fornix to end in the hippocampus of the opposite side.
Etymology: Gk, hippokampos, seahorse; L, commissura, a joint
a thin triangular sheet of transverse fibers that connects the medial edges of the posterior pillars of the fornix in the brain.
A thin sheet of axons from the fornix that cross the midline plane under the posterior sector of the corpus callosum and interconnect homologous fields of the right and left hippocampi.Synonym: commissure of fornix
See also: commissure