Inferior cerebellar peduncle
Scheme showing the connections of the several parts of the brain. (Inferior peduncle labeled at bottom right.)
Inferior cerebellar peduncle shown with the two other cerebellar peduncles
Details
Identifiers
Latin	pedunculus cerebellaris inferior
NeuroNames	781
NeuroLex ID	birnlex_1691
TA98	A14.1.04.013 A14.1.07.413
TA2	5850
FMA	72615
Anatomical terms of neuroanatomy [edit on Wikidata]

Theinferior cerebellar peduncle is formed by fibers of therestiform body that join with fibers from the much smallerjuxtarestiform body.^[1] The inferior cerebellar peduncle is the smallest of the threecerebellar peduncles.

The upper part of the posterior district of themedulla oblongata is occupied by the inferior cerebellar peduncle, a thick rope-like strand situated between the lower part of thefourth ventricle and the roots of theglossopharyngeal andvagus nerves.

Each inferior cerebellar peduncle connects thespinal cord and medulla oblongata with thecerebellum, and comprises thejuxtarestiform body and restiform body.

Important fibers running through the inferior cerebellar peduncle include thedorsal spinocerebellar tract and axons from theinferior olivary nucleus, among others.

The inferior cerebellar peduncle carries many types of input and output fibers that are mainly concerned with integratingproprioceptive sensory input with motor vestibular functions such asbalance andposture maintenance. It consists of fibers from the fourspinocerebellar tracts that enter the cerebellum:

• Posterior spinocerebellar tract: unconsciousproprioceptive information from the lower part of trunk and lower limb. This tract originates at the ipsilateralClarke's nucleus (T1-L1) and travels upward to reach the inferior cerebellar peduncle and synapses within thespinocerebellum (also known as the paleocerebellum).
• Cuneocerebellar tract: unconscious proprioceptive information from the upper limb and neck. This tract originates at the ipsilateral accessory cuneate nucleus and travels through the inferior cerebellar peduncle to reach the spinocerebellum part of the cerebellum.
• Trigeminocerebellar tract: unconscious proprioceptive information from the face.
• Olivocerebellar tract: "error signal" in movement originates from the cerebral cortex and spinal cord. This tract originates at contralateral inferior olivary nucleus and enters the cerebellum as aclimbing fiber.
• Vestibulocerebellar tract: vestibular information projects onto thevestibulocerebellum (also known as the archicerebellum).

This peduncle also carries information leaving cerebellum: from thePurkinje cells to the vestibular nuclei in the dorsalbrainstem located at the junction between thepons andmedulla oblongata.

• Cerebral peduncle
• Juxtarestiform body
• Middle cerebellar peduncles
• Superior cerebellar peduncles

• 
  Dissection of brain-stem. Dorsal view.
• 
  Diagram showing the course of the arcuate fibers.
• 
  Cross section of lower pons showing part of the inferior cerebellar peduncle (#8) labeled at the upper left.
• 
  Cerebellum. Inferior surface.

This article incorporates text in thepublic domain frompage 775 of the 20th edition ofGray's Anatomy(1918)

• Atlas image: n2a5p2 at the University of Michigan Health System
• Atlas image: n2a7p4 at the University of Michigan Health System
• Illustration and text: cere/text/p1/icp.htm at the University of Wisconsin-Madison Medical school

• Wikipedia articles incorporating text from the 20th edition of Gray's Anatomy (1918)
• Brainstem
• Cerebellar connections

• Articles with short description
• Short description matches Wikidata