climbing fibers

climb·ing fi·bers

nerve fibers in the cerebellar cortex that synapse on smooth branchlets of Purkinje cell dendrites.
References in periodicals archive ?
The Scripps group finds that in normal rats an intoxicating dose of alcohol increases the activity of one major source of input to Purkinje cells, the nerve processes called climbing fibers.
The climbing fibers arise from cells in the area of the brain stem called the inferior olive complex.