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Wake after sleep onset (WASO) refers to periods of wakefulness occurring after defined sleep onset. This parameter measures wakefulness, excluding the wakefulness occurring before sleep onset. WASO time is a better reflection of sleep fragmentation.<1>
Wake after sleep onset (WASO) refers to periods of wakefulness occurring after defined sleep onset. This parameter measures wakefulness, excluding the wakefulness occurring before sleep onset. WASO time is a better reflection of sleep fragmentation.<1>
== Conditions ==
On [[monophasic]], WASO is a common issue. Those, who often wake up at night, may find polyphasic schedules with a higher segmentation more natural. This includes [[dual core]], [[tri core]] schedules, as well as [[QC0]]. Other schedules with only short [[cores]] and [[naps]], such as [[E3]], are also possible. [[Nap only]] schedules can fit in extreme cases as well (e.g. inability to stay asleep for more than ~20 minutes at a time).
On polyphasic, WASO often is a sign of the [[repartitioning]] and ongoing adaptation. It is supposed to disappear mostly after being adapted.
Waking up during sleep frequently may be a sign of the low sleep quality, at well as a sign of different sleep disorders, such as [[wikipedia:Sleep_apnea|sleep apnea]].
== References ==
== References ==
1: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4246141/
1: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4246141/
