Saltatory Conduction Race: Myelinated vs Unmyelinated Axon (2D)

Compare how a nerve impulse travels along two axons of identical length in a flat lane view: an unmyelinated axon, where the action potential must be actively regenerated at every point along the membrane, and a myelinated axon, where the impulse leaps between exposed nodes of Ranvier through electrically insulated internodes. Fire a pulse to race them and watch the live timers, then use the lesion-extent and severity controls to strip myelin from part of the fast axon and see conduction velocity fall — or the signal fail to cross a badly demyelinated stretch entirely.