This is pretty interesting to me. I am not a lawyer so I don't know how relevant this is. It's interesting though.
In Ashcraft v. Tennessee (1944), there are some footnotes and references to other cases which have eerie references to, among other things, secret detentions and interrogations that led to the dismissal of the person's 'confession' (scare quotes in the original footnotes) and they also note that sleep deprivation is a very common form of torture.