Braid designed a rough distinction amongst unique levels of hypnosis which he termed the initial and second acutely aware phase of hypnotism, he later changed this with a difference between "sub-hypnotic", "complete hypnotic", and "hypnotic coma" phases. Jean-Martin Charcot produced the same distinction amongst levels named somnambulism, lethargy, and catalepsy. https://goo.gl/maps/5vjUhEDhdeq8xgw98