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If a subject is put in an environment which is seeable oppositely in right & left, the adaptive mechanism of the vestibular oculomotor reflection works and the cerebellum plays important role.
In such a case, in the cerebellar cortex, an input-system is formed of climbing fibers and mossy fibers, neuraxons from Purkinje cells behave as output-systems.
Furthermore, an excitatory synaptic junction of a Purkinje cell with a climbing fiber can be found out in this case.
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