| A thin, transversely oriented ribbon of fibers, the medial lemniscus, ascends from the lower brainstem into the midbrain tegmentum where it occupies a ventrolateral position. |
| The bulky superior cerebellar peduncles cross each other to form the decussation of the superior cerebellar peduncles, located within the midbrain tegmentum. |
| Ascending from the medulla and curving dorsolaterally into the tegmentum of the midbrain is the medial lemniscus, on its way to the thalamus. |
| These four pairs of lemnisci proceed rostrally into the tegmentum of the midbrain. |
| This decussation occurs in the midbrain tegmentum at the level of the inferior colliculi. |
| Two non-sensory control regions were examined, the optic tectum and the mesencephalic tegmentum. |
