2012: “It’s like you’re no longer there”, says a Canadian teen about being placed in a trance she couldn’t wake up from. 1844: Harriet Martineau turns to mesmerism, a hypnosis-like medical treatment, to ease the pain of uterine tumors.

2012: “It’s like you’re no longer there”, says a Canadian teen about being placed in a trance she couldn’t wake up from.

1844: Harriet Martineau turns to mesmerism, a hypnosis-like medical treatment, to ease the pain of uterine tumors.