The Sleep Files: Altered States
- Tahun: 1998
- Negara: United Kingdom
- Genre: Documentary
- Studio: Twenty Twenty Television, Discovery Communications
- Kata kunci:
- Pengarah: Joseph Bullman
- Pelakon: Nigel Anthony, Rosalind Cartwright, Denise Corke, Michel Corke, Penny Corke, Floyd S. Cornelison, Jr., M.D.
