SOSWS - Revision history

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← Older revision		Revision as of 07:40, 26 January 2021
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	Sleep-onset SWS (SOSWS) is a ~~short~~ [[wikipedia:Slow-wave_sleep\|slow-wave-sleep]] latency, or an ~~abnormally rapid transition~~ from wakefulness to SWS, ~~almost fully skipping~~ the period of [[wikipedia:Non-rapid_eye_movement_sleep\|light sleep]] that normally characterizes the beginning of the sleep ~~period~~.		'''Sleep-onset SWS''', or '''SOSWS''', is a phenomenon in which [[wikipedia:Slow-wave_sleep\|slow-wave-sleep]] onset latency is greatly reduced, wherein an individual transitions rapidly from wakefulness to SWS, shortening the period of [[wikipedia:Non-rapid_eye_movement_sleep\|light sleep]] that normally characterizes the beginning of the sleep cycle.

	== Mechanism ==		== Mechanism ==
	After ~~periods~~ of [[wikipedia:Sleep_deprivation\|sleep deprivation]], ~~and slow-wave-sleep deprivation in particular~~, ~~a significant shortening of [[Scheduling overview#Sleep stages\|NREM3]]~~ and ~~NREM4 latencies is usually expected~~.<ref name="swsd" /> Similarly to [[SOREM\|sleep onset REM]]<ref name="aasm" />, SWS latency ~~is <~~15 minutes ~~in this case~~.		After a sustained period of [[wikipedia:Sleep_deprivation\|sleep deprivation]], especially of SWS, SWS becomes prioritised by the body and its onset latency greatly reduces.<ref name="swsd" /> Similarly to [[SOREM\|sleep-onset REM]]<ref name="aasm" />, SWS latency can reduce to less than 10 to 15 minutes.

	== Application to polyphasic sleep ==		== Application to polyphasic sleep ==
	~~Generally~~ polyphasic sleep schedules, which contain at least 3 full [[wikipedia:Sleep_cycle\|sleep cycles]] in [[~~Cores~~\|core(-s)]], rarely cause significant SWS loss. SOSWS is more common for extreme schedules, such as the [[Nap only\|nap-only]] line. This mechanism causes entering SWS almost immediately, which ~~allows to get~~ SWS-filled [[naps]].		Most polyphasic sleep schedules, which contain at least 3 full [[wikipedia:Sleep_cycle\|sleep cycles]] in [[Core\|core(s)]], rarely cause significant SWS loss. SOSWS is more common for extreme schedules, such as the [[Nap only\|nap-only]] schedule line. This mechanism causes entering SWS almost immediately, which produces SWS-filled [[Nap\|naps]] on these schedules. Under such circumstances, these naps can become extremely difficult to wake up from, even more so then REM-filled naps after [[REM rebound]]. This represents one of the main obstacles in [[Uberman#Adaptation\|adapting to a nap-only schedule]].

	== References ==		== References ==

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	<ref name="aasm">American Academy of Sleep Medicine. Central disorders of hypersomnolence. In: The International Classification of Sleep Disorders – Third Edition (ICSD-3) Online Version. Darien, IL: American Academy of Sleep Medicine; 2014</ref>		<ref name="aasm">American Academy of Sleep Medicine. Central disorders of hypersomnolence. In: The International Classification of Sleep Disorders – Third Edition (ICSD-3) Online Version. Darien, IL: American Academy of Sleep Medicine; 2014</ref>
	}}		}}

			[[Category:Adaptation to Polyphasic Sleep]]
			{{TNT\|Template:Adaptation to Polyphasic Sleep}}

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	== Mechanism ==		== Mechanism ==
	After periods of [[wikipedia:Sleep_deprivation\|sleep deprivation]], and slow-wave-sleep deprivation in particular, a significant shortening of [[Scheduling overview#Sleep stages\|NREM3]] and NREM4 latencies is usually expected.<1> Similarly to [[SOREM\|sleep onset REM]]<2>, SWS latency is <15 minutes in this case.		After periods of [[wikipedia:Sleep_deprivation\|sleep deprivation]], and slow-wave-sleep deprivation in particular, a significant shortening of [[Scheduling overview#Sleep stages\|NREM3]] and NREM4 latencies is usually expected.<ref name="swsd" /> Similarly to [[SOREM\|sleep onset REM]]<ref name="aasm" />, SWS latency is <15 minutes in this case.

	== Application to polyphasic sleep ==		== Application to polyphasic sleep ==
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	== References ==		== References ==
			{{reflist\|refs=
			<ref name="swsd">{{cite journal \|vauthors=Ferrara M, De Gennaro L, Bertini M \|date=1999 \|title=Selective slow-wave sleep (SWS) deprivation and SWS rebound: do we need a fixed SWS amount per night \|journal=Sleep research online \|volume=2 \|issue=1 \|pages=15-19}}</ref>
			<ref name="aasm">American Academy of Sleep Medicine. Central disorders of hypersomnolence. In: The International Classification of Sleep Disorders – Third Edition (ICSD-3) Online Version. Darien, IL: American Academy of Sleep Medicine; 2014</ref>
			}}

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2020-12-22T22:31:12Z

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Sleep-onset SWS (SOSWS) is a short [[wikipedia:Slow-wave_sleep|slow-wave-sleep]] latency, or an abnormally rapid transition from wakefulness to SWS, almost fully skipping the period of [[wikipedia:Non-rapid_eye_movement_sleep|light sleep]] that normally characterizes the beginning of the sleep period.

== Mechanism ==
After periods of [[wikipedia:Sleep_deprivation|sleep deprivation]], and slow-wave-sleep deprivation in particular, a significant shortening of [[Scheduling overview#Sleep stages|NREM3]] and NREM4 latencies is usually expected.<1> Similarly to [[SOREM|sleep onset REM]]<2>, SWS latency is <15 minutes in this case.

== Application to polyphasic sleep ==
Generally polyphasic sleep schedules, which contain at least 3 full [[wikipedia:Sleep_cycle|sleep cycles]] in [[Cores|core(-s)]], rarely cause significant SWS loss. SOSWS is more common for extreme schedules, such as the [[Nap only|nap-only]] line. This mechanism causes entering SWS almost immediately, which allows to get SWS-filled [[naps]].

== References ==