Answer
Hypnotic anaesthesia, a significant contribution by James Braid, involved inducing a trance-like state to alleviate pain during surgery. Braid's work in the mid-19th century laid the foundation for the development of hypnosis as a therapeutic technique. By demonstrating the power of suggestion and the mind's ability to influence physical sensations, Braid's research paved the way for advancements in anaesthesia and the understanding of the mind-body connection.