ノンレム睡眠 すいみんじゃありませんでした
nonremusuiminjārimasendeshita

Noun
Desu Copula

The polite, past negative form of ノンレム睡眠

1. Was not non-REM sleep.; Was not in non-REM sleep.

Past/Perfective
Negative
Polite
Terminal Form