Superior cerebellar peduncles

The superior cerebellar peduncles (SCP) is a paired white matter fiber tract that connects the cerebellum with the midbrain. The SCP contains vital afferent and efferent fibers including cerebellothalamic, cerebellorubral and ventrospinocerebellar tracts.

SCP decussate centrally in the ventral midbrain at the level of the inferior colliculi. Diffusion tensor imaging (DTI) enable depiction of the SCP decussation and on the colour coded fractional anisotropy (FA) map this is seen as a red dot in the ventral midbrain (conventionally, red denote transversely oriented fibers).

The superior cerebellar peduncles receive their arterial blood supply through branches of the superior cerebellar artery.

Clinically SCP decussation is relevant in congenital anomalies of the posterior fossa in particular in Joubert Syndrome where the SCP decussation is absent.

Neuroanatomy
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Article information

rID: 45542
Section: Anatomy
Synonyms or Alternate Spellings:
  • Superior cerebellar peduncle

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Cases and figures

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    Figure 1: decussation of SCP on DTI
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