The cuckoos show what is called saltatory or transilient wing moults. The pathophysiology of saltatory pattern is not well-known. The length of axons' myelinated segments is important to the success of saltatory conduction. The myelination enables an especially rapid mode of electrical impulse propagation called saltatory conduction. This strategy is considered saltatory, or pause-and-travel search. This process, termed saltatory conduction, is featured in a majority of physiology textbooks. This arrangement permits saltatory conduction of action potentials with repropagation at the nodes of Ranvier. Some diseases degrade myelin and impair saltatory conduction, reducing the conduction velocity of action potentials.