In 1983, Berkeley poet and journalist Mark O'Brien wrote an article about sexual surrogates — women and men trained to help people with disabilities learn to use their bodies to give themselves and others erotic pleasure.
For O'Brien, the subject wasn't academic. After a bout of childhood polio, he had spent much of his life in an iron lung. He could talk, and tap out words on a typewriter holding a stick in his mouth. He could feel things below the neck. But he couldn't move his muscles.