Commentary on the Effect of Electricity on Muscular Motion

Luigi Galvani, an Italian physician and physicist, explored the effects of electricity on animal tissue in the late 18th century. His experiments, detailed in his 1791 publication Commentary on the Effect of Electricity on Muscular Motion, involved stimulating frog leg muscles with electrical means, causing them to contract.1

Galvani theorized that animal tissue possessed an innate "animal electricity" that activated nerves and muscles when stimulated by metal probes. While his theory of "animal electricity" was later disproven, his work correctly identified an electrical stimulus as the cause of muscular contractions. His discoveries spurred further research and contributed to the development of the voltaic pile, an early form of battery. The term "galvanism" and the verb "galvanize" are derived from his work, initially referring to electricity produced by chemical action and later evolving to a figurative sense of spurring action.12