Colliculogeniculate

Some of the cells of the inferior colliculi send commissural fibers to the opposite colliculus; others send colliculogeniculate fibers (inferior brachium) to the medial geniculate body of the thalamus; some to the superior colliculus (acustico-optic fibers) and some to the cerebellum (tectocerebellar fibers).

Source: wiktionary

These may correspond to the thin colliculogeniculate endings previously described in the cat ventral nucleus (Morest 1975: Fig. 7, top) and, perhaps, to the phalangiform axons seen in the dorsal division (W iner and Morest 1984).

Source: wiktionary

These data suggest that at birth the colliculogeniculate projection is more mature than the corticogeniculate projection but less developed than the retinogeniculate pathway.

Source: wiktionary