Numbering six in total, may refer to:

Superior cerebellar peduncle - primary output of the cerebellum with mostly fibers carrying information to the midbrain.

Middle cerebellar peduncle

Inferior cerebellar peduncle - receives proprioceptive information from the ipsilateral side of the body

Mass lesions of the inferior, middle, and superior cerebellar peduncles (cerebellar peduncle complex [CPC]) present numerous surgical pitfalls when resection or debulking is warranted. Success has been achieved through multiple approaches, but complications can be severe.

see lateral transcerebellar approach