The Sleep Files: Altered States
- वर्ष: 1998
- देश: United Kingdom
- शैली: Documentary
- स्टुडिओ: Twenty Twenty Television, Discovery Communications
- कीवर्ड:
- संचालक: Joseph Bullman
- कास्ट: Nigel Anthony, Rosalind Cartwright, Denise Corke, Michel Corke, Penny Corke, Floyd S. Cornelison, Jr., M.D.
