Increased velocity of conduction in a nerve is oured by

In unmyelinated fibers, electrical impulses (action potentials) travel as continuous waves, but, in myelinated fibers, they "hop" or propagate by saltatory conduction. ... Myelin decreases capacitance and increases electrical resistance across the axonal membrane (the axolemma) Ref: guyton and hall textbook of medical physiology 12 edition page number:57,58,59