any of the axons of the granule cells which make up the cerebellar cortex's most exterior layer.
PARALLEL FIBER: "The parallel fiber appears distorted, but I need to get more scans before I can be sure."
Cite this page: N., Sam M.S., "PARALLEL FIBER," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/parallel-fiber/ (accessed March 21, 2023).