part of olivocerebellar fiber system pontocerebellar fiber 2018-04-19T11:25:27Z BTO:0006161 BrendaTissueOBO Marion, contact@brenda-enzymes.org The pontocerebellar fibers are the second order neuron fibers of the corticopontocerebellar tracts that cross to the other side of the pons and run within the middle cerebellar peduncles, from the pons to the contralateral cerebellum. ponto-cerebellar fiber