Decussation of superior cerebellar peduncle

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Brain: Decussation of superior cerebellar peduncle

Transverse section of mid-brain at level of inferior colliculi. (Decussation not labeled, but region is visible.)
NeuroNames	hier-518

The decussation of superior cerebellar peduncle is the portion of the superior cerebellar peduncle which crosses into the midbrain.

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Tectum (Dorsal)

Peduncle (Ventral)

Peduncle tegmentum	Periaqueductal gray (Cerebral aqueduct, Dorsal raphe nucleus) Ventral tegmentum • Pedunculopontine nucleus • Red nucleus (Rubrospinal tract, Rubro-olivary tract) • MLF (riMLF) • lemnisci (Medial, Lateral) cranial nuclei: GSA (V: Mesencephalic) - GSE (III: Oculomotor, IV: Trochlear) - GVE (III: Edinger-Westphal) Interstitial cell of Cajal Superior cerebellar peduncles (Decussation of superior cerebellar peduncle)

Peduncle base	Substantia nigra (Pars compacta, Pars reticulata) Cerebral crus: Corticospinal tract - Corticobulbar tract - Corticopontine tract/Frontopontine fibers/Temporopontine fibers Interpeduncular fossa