Here is a snippet:
A U.S. military officer warned Pentagon officials that an American detainee was being driven nearly insane by months of punishing isolation and sensory deprivation in a U.S. military brig, according to documents obtained by the American Civil Liberties Union and provided to The Associated Press...
They were deprived of natural light for months and for years were forbidden even minor distractions such as a soccer ball or a dictionary.
"I will continue to do what I can to help this individual maintain his sanity, but in my opinion we're working with borrowed time," an unidentified Navy brig official wrote of prisoner Yaser Esam Hamdi in 2002. "I would like to have some form of an incentive program in place to reward him for his continued good behavior, but more so, to keep him from whacking out on me."