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Olivocerebellar tract

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Olivocerebellar tract
Transverse section of medulla oblongata below the middle of the olive. (Cerebello-olivary fibers visible at center right.)
Details
Identifiers
Latintractus olivocerebellaris
NeuroNames804
NeuroLex IDbirnlex_1579
TA98A14.1.04.118
TA25853
FMA72638
Anatomical terms of neuroanatomy[edit on Wikidata]

The olivocerebellar tract, also known as olivocerebellar fibers, are neural fibers which originate at the olivary nucleus and pass out through the hilum and decussate with those from the opposite olive in the raphe nucleus, then as internal arcuate fibers they pass partly through and partly around the opposite olive and enter the inferior peduncle to be distributed to the cerebellar hemisphere of the opposite side from which they arise.

They terminate directly on Purkinje cells as the climbing fiber input system.

References

Public domain This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

  1. Eccles J.C, Llinas R, and Sasaki. Excitation of cerebellar Purkinje cells by the climbing fibers. Nature 203: 245-246, 1964

External links

Anatomy of the medulla
Grey matter
Cranial nuclei
afferent:
efferent:
Dorsal
Ventral
White matter
Dorsal
Ventral
Surface
Front
Back
Grey
Anatomy of the cerebellum
Surface
Lobes
Medial/lateral
Grey matter
Deep cerebellar nuclei
Cerebellar cortex
White matter
Internal
Peduncles
Brain and spinal cord: neural tracts and fasciculi
Sensory
DCML
:
:
:
Anterolateral/
pain
Fast/lateral

2° (Spinomesencephalic tractSuperior colliculus of Midbrain tectum)

Slow/medial
Motor
Pyramidal
Extrapyramidal
flexion:
flexion:
extension:
extension:
Basal ganglia
direct:1° (Motor cortexStriatum) → 2° (GPi) → 3° (Lenticular fasciculus/Ansa lenticularisThalamic fasciculusVL of Thalamus) → 4° (Thalamocortical radiationsSupplementary motor area) → 5° (Motor cortex)
indirect:1° (Motor cortexStriatum) → 2° (GPe) → 3° (Subthalamic fasciculusSubthalamic nucleus) → 4° (Subthalamic fasciculusGPi) → 5° (Lenticular fasciculus/Ansa lenticularisThalamic fasciculusVL of Thalamus) → 6° (Thalamocortical radiationsSupplementary motor area) → 7° (Motor cortex)
nigrostriatal pathway:
Cerebellar
Afferent
Efferent
Bidirectional:
Spinocerebellar
Unconscious
proprioception
Reflex arc
Portal:


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