(Q2238010)
Statements
Identifiers
Sitelinks
Wikipedia(6 entries)
- arwiki دورة النوم
- cswiki Spánkový cyklus
- dewiki Schlafzyklus
- enwiki Sleep cycle
- trwiki Uyku döngüsü
- zhwiki 睡眠週期
oscillation between the slow-wave and REM phases of sleep