Effects of different sleep restriction protocols on sleep architecture and daytime vigilance in healthy men.
TLDR
The study showed that cumulative declines in daytime vigilance resulted from loss of total sleep time, rather than from specific stages, and underscored the reversibility of SR effects with greater amounts of sleep.Abstract:
Sleep is regulated by complex biological systems and environmental influences, neither of which is fully clarified. This study demonstrates differential effects of partial sleep deprivation (SD) on sleep architecture and psychomotor vigilance task (PVT) performance using two different protocols (sequentially) that each restricted daily sleep to 3 hours in healthy adult men. The protocols differed only in the period of sleep restriction; in one, sleep was restricted to a 3-hour block from 12:00 AM to 3:00 AM, and in the other, sleep was restricted to a block from 3:00 AM to 6:00 AM. Subjects in the earlier sleep restriction period showed a significantly lower percentage of rapid-eye-movement (REM) sleep after 4 days (17.0 vs. 25.7 %) and a longer latency to the onset of REM sleep (L-REM) after 1 day (78.8 vs. 45.5 min) than they did in the later sleep restriction period. Reaction times on PVT performance were also better (i.e. shorter) in the earlier SR period on day 4 (249.8 vs. 272 ms). These data support the view that earlier-night sleep may be more beneficial for daytime vigilance than later-night sleep. The study also showed that cumulative declines in daytime vigilance resulted from loss of total sleep time, rather than from specific stages, and underscored the reversibility of SR effects with greater amounts of sleep.read more
Citations
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Chronic Sleep Restriction Induces Cognitive Deficits and Cortical Beta-Amyloid Deposition in Mice via BACE1-Antisense Activation.
TL;DR: This work determined in wild‐type mice the impact of CSR, on cognitive performance, beta‐amyloid (Aβ) peptides, and its feed‐forward regulators regarding AD pathogenesis.
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The effects of partial sleep restriction and altered sleep timing on appetite and food reward
Jessica McNeil,Geneviève Forest,Luzia Jaeger Hintze,Jean-François Brunet,Graham Finlayson,John E. Blundell,Éric Doucet +6 more
TL;DR: It is suggested that appetite sensations and food reward are increased following PSR with an advanced wake-time, rather than delayed bedtime, vs. control sessions, and this did not translate into increased EI during a test meal.
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Cumulative neurobehavioral and physiological effects of chronic caffeine intake: individual differences and implications for the use of caffeinated energy products
TL;DR: The scientific evidence for sleep loss, circadian phase, sleep inertia, and the time-on-task effect as causes of low energy is discussed and research assessing the efficacy of caffeine to counteract decreased alertness and increased fatigue in such situations is summarized.
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Impaired Driving Performance Associated with Effect of Time Duration in Patients with Primary Insomnia
Joy Perrier,Françoise Bertran,Sullivan Marie,Colette Couque,Jan Bulla,Pierre Denise,Marie-Laure Bocca +6 more
TL;DR: Findings revealed that primary insomnia is associated with a performance decrement during a simulated monotonous driving task and it appears advisable for clinicians to warn patients about their impaired driving performance that could lead to an increased risk of driving accidents.
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The effects of sleep restriction and altered sleep timing on energy intake and energy expenditure.
Jessica McNeil,Éric Doucet,Jean-François Brunet,Luzia Jaeger Hintze,Isabelle Chaumont,Emilie Langlois,Riley Maitland,Alexandre Riopel,Geneviève Forest +8 more
TL;DR: It is suggested that the timing of a sleep restriction period impacts energy balance parameters, and durations were associated with greater EI between sleep restriction sessions.
References
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A Manual of Standardized Terminology, Techniques and Scoring System for Sleep Stages of Human Subjects.
TL;DR: Techniques of recording, scoring, and doubtful records are carefully considered, and Recommendations for abbreviations, types of pictorial representation, order of polygraphic tracings are suggested.
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The Cumulative Cost of Additional Wakefulness: Dose-Response Effects on Neurobehavioral Functions and Sleep Physiology From Chronic Sleep Restriction and Total Sleep Deprivation
TL;DR: It appears that even relatively moderate sleep restriction can seriously impair waking neurobehavioral functions in healthy adults, and sleep debt is perhaps best understood as resulting in additional wakefulness that has a neurobiological "cost" which accumulates over time.