History of sleep medicine
| Phase 1 | Prehistoric |
|---|---|
| Phase 2 | 1952–1970 Exploring sleep; discovery of REM; journey through the night |
| Phase 3 | 1971–1980 Extending medical practice to include the sleeping patient; understanding the determinants of daytime alertness |
| Phase 4 | 1981–1990 New treatments; expanding and organising sleep medicine; operational and public policy implications |
| Phase 5 | 1991–2000 Bringing the diagnosis and treatment of sleep disorders into the mainstream of society and the health care system |