mossy fibre

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One of the two types of afferent neurons conveying signals to the cerebellum, projecting from sites other than the inferior olivary nuclei on to tiny granule cells in the cerebellar cortex, situated immediately under the layer of Purkinje cells with which the granule cells form many synapses, each mossy fibre indirectly exciting many Purkinje cells. US mossy fiber. Compare climbing fibre. [So called because of its appearance]

Subjects: Psychology.

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