sentences:  In 1780, he discovered that the muscles of dead frogs' legs twitched when struck by an electrical spark.This was one of the first forays into the study of bioelectricity, a field that still studies the electrical patterns and signals from tissues such as the nerves and muscles.Galvani's wife Lucia Galeazzi Galvani encouraged his independent research, and served as a counsellor, collaborator and guide for his experiments until her death.