Superior cerebellar peduncle

Last revised by Rohit Sharma on 23 Dec 2024

The superior cerebellar peduncles, also known as the brachium conjunctivum, are paired white matter fiber tracts that connect the cerebellum with the midbrain. The superior cerebellar peduncle contains vital afferent and efferent fibers including cerebellothalamic, cerebellorubral and ventrospinocerebellar tracts.

The superior cerebellar peduncles decussate centrally (decussation of Wernekinck) in the ventral midbrain at the level of the inferior colliculi. Diffusion tensor imaging (DTI) enables depiction of the superior cerebellar peduncle decussation and on the color-coded fractional anisotropy map this is seen as a red dot in the ventral midbrain (conventionally, red denote transversely-oriented fibers).

The thin superior medullary velum is suspended between the two peduncles.

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

Cases and figures

  • Figure 1: cerebellar peduncles (Gray's illustration)
  • Figure 2: cerebellar peduncles (Gray's illustration)
  • Figure 3: decussation (illustration)
  • Figure 4: decussation of SCP on DTI
:

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.