Definition: a compact bundle of fibers arising in the habenula and passing anteriorly (ventrally) to the interpeduncular nucleus at the base of the midbrain; some of its fibers bypass this nucleus and terminate in the raphe nuclei of the caudal mesencephalic tegmentum.
Synonym(s): fasciculus retroflexusTA, habenulointerpeduncular tract, habenulopeduncular tractTA, tractus habenulointerpeduncularisTA, fasciculus of Meynert, habenulopeduncular tract, retroflex bundle of Meynert
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