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the connection between the right and left habenular nuclei; the decussation of fibers of the two striae medullares, forming the dorsal portion of the peduncle of the pineal body.
A group of decussating axons of the stria medullaris. The stria medullaris contains axons projecting to the habenula from the septal nuclei, the preoptic hypothalamus, and the anterior thalamic nuclei; those stria medullaris axons that project to the contralateral habenula cross the midline plane via the habenular commissure.
See also: commissure