Shortening of nerve fibers associated with propagated nerve impulse.
D000200:Action Potentials; D000818:Animals; D055592:Biophysical Phenomena; D001703:Biophysics; D003386:Brachyura; D009068:Movement; D009412:Nerve Fibers / Q000033:anatomy & histology / Q000502:physiology*; D009431:Neural Conduction