This post might be in the wrong subforum, I wasn't sure where to put it, sorry. Quoting another website: For me this two paragraphs contradict. The first saying that the myelin increase the speed of the impulses, and the second says that "myelination helps prevent the electrical current from leaving the axon.", which sound contradictory to me. Viewing it from the physics side, how does an increase in resistance and a decrease in capacitance accelerate (or slows down) the speed of the impulses?