Electrical stimulation

This invention demonstrated that the muscles of dissected frog legs twitched when struck by a spark from a Leyden jar, suggesting that muscles were activated by electrical impulses. This foundational experiment led to significant insights into bioelectric phenomena in living tissues and laid the foundation for electrophysiology.
 Luigi Galvani Italy 1780 Electrical stimulation

This invention demonstrated that the muscles of dissected frog legs twitched when struck by a spark from a Leyden jar, suggesting that muscles were activated by electrical impulses. This foundational experiment led to significant insights into bioelectric phenomena in living tissues and laid the foundation for electrophysiology.