The olivocerebellar tract, also known as olivocerebellar fibers, are neural fibers which originate at the

olivary nucleus In anatomy, the olivary bodies or simply olives (Latin ''oliva'' and ''olivae'', singular and plural, respectively) are a pair of prominent oval structures in the medulla oblongata, the lower portion of the brainstem. They contain the olivary nucl ...

and pass out through the hilum and

decussate Decussation is used in biological contexts to describe a crossing (due to the shape of the Roman numeral for ten, an uppercase 'X' (), ). In Latin anatomical terms, the form is used, e.g. . Similarly, the anatomical term chiasma is named aft ...

with those from the opposite olive in the raphe nucleus, then as

internal arcuate fibers In neuroanatomy, the internal arcuate fibers or internal arcuate tract are the axons of second-order sensory neurons that compose the gracile and cuneate nuclei of the medulla oblongata. These second-order neurons begin in the gracile and cunea ...

they pass partly through and partly around the opposite olive and enter the

inferior peduncle The upper part of the posterior district of the medulla oblongata is occupied by the inferior cerebellar peduncle, a thick rope-like strand situated between the lower part of the fourth ventricle and the roots of the glossopharyngeal and vagus nerv ...

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

References

External links

* Cerebellar connections {{Neuroanatomy-stub