This room is where prisoners are either chained or un-chained, it depends on who you are... but prisoners can freely use their chakra and such but it wouldnt work anyway since the manifestations are figments of my imagination and are unaffected by anything that a mere shinobi can do. When the imagination manifestations come about, they are tangible, they can kill you and most likelely will. The only way out is down towards the next floor, and the only way inside is via S.T.A.L.K.E.R warping.