climbing fiber

noun

Definition of climbing fiber

anatomy
: any of the afferent nerve fibers arising from neurons in the inferior olive that ascend to the cerebellar cortex to synapse with Purkinje cells The olive sends so-called climbing fibers up to the cerebellum where they wrap around Purkinje cells like vines around a tree, exerting a powerful influence on them …— Ingrid Wickelgren, Science, 11 Sept. 1998 Individual Purkinje neurons receive synaptic input from only a single climbing fiber, whereas each climbing fiber contacts 1-10 Purkinje neurons.— Eric R. Kandel et al., Principles of Neural Science, 4th Edition, 2000

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First Known Use of climbing fiber

1950, in the meaning defined above

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The first known use of climbing fiber was in 1950

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Dictionary Entries Near climbing fiber

climbing fern

climbing fiber

climbing fig

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Cite this Entry

“Climbing fiber.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/climbing%20fiber. Accessed 5 Aug. 2021.

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