The Sleep Files: Altered States
- Taon: 1998
- Bansa: United Kingdom
- Genre: Documentary
- Studio: Twenty Twenty Television, Discovery Communications
- Keyword:
- Direktor: Joseph Bullman
- Cast: Nigel Anthony, Rosalind Cartwright, Denise Corke, Michel Corke, Penny Corke, Floyd S. Cornelison, Jr., M.D.
