Superior cerebellar peduncle
|Superior cerebellar peduncle|
Dissection showing the projection fibers of the cerebellum. (Superior peduncle labeled at center top.)
|Latin||pedunculus cerebellaris superior|
|NeuroLex ID||Superior cerebellar peduncles|
|Anatomical terms of neuroanatomy|
The superior cerebellar peduncles (brachia conjunctiva), two in number, emerge from the upper and medial part of the white matter of the hemispheres and are placed under cover of the upper part of the cerebellum.
Below, they form the upper lateral boundaries of the fourth ventricle, but as they ascend they converge on the dorsal aspect of the ventricle and thus assist in forming its roof.
The decussation of superior cerebellar peduncle is the portion of the superior cerebellar peduncle which crosses into the midbrain. This decussation comprises the cerebellothalamic tract or dentatothalamic tract and the cerebellorubral tract which arises from the globose and emboliform nuclei to the contralateral red nucleus to become the rubrospinal tract.
The ventral spinocerebellar tract enters the cerebellum through the superior cerebellar peduncles, which otherwise mostly contain efferent fibres.
- Atlas image: n2a7p6 at the University of Michigan Health System
- Atlas image: n2a7p4 at the University of Michigan Health System
- NIF Search - Decussation of superior cerebellar peduncle via the Neuroscience Information Framework