Mary Shelley was very acquainted with the medical sciences of her time. When Mary Shelley wrote the first draft of Frankenstein there was a lot of experimentation with the resuscitation of people. This went into how electrophysiology effects animal tissues. While this was going on her mother (Mary Wollstonecraft) threw herself off a bridge in London. This also came up because it was discovered that some people who have drowned can be revived after appearing dead.
Vetted?
No