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3 Απρ 2023 · The mechanism through which sleep is generated and maintained is more of a balance between two systems located within the brain: the homeostatic processes, which are functionally the body’s “need for sleep” center, and the circadian rhythm which is an internal clock for the sleep-wake cycle.
This chapter provides an overview of basic sleep physiology and describes the characteristics of REM and NREM sleep. Sleep and circadian-generating systems are also reviewed. The chapter ends with a discussion about how sleep patterns change over an individual’s life span.
Chapter 2 of this report describes the basic biology and physiology of sleep and circadian rhythms. Chapter 3 introduces the primary sleep disorders and their associated health burdens, and Chapter 4 describes their impact on an individual’s performance and associated economic impact.
Sleep is required for normal physiology; death occurs if there is long-term sleep deprivation . The multiple changes that occur during sleep are important for the entire body, not just for the brain. Surprisingly, “the” function of sleep is unknown. As Dr. Alan Rechtschaffen famously said: “If sleep doesn’t serve an absolutely vital ...
15 Αυγ 2018 · Black and red lines illustrate typical sleep cycles for control and sleep-deprived groups, respectively. Yellow bar indicates period of sleep deprivation. The next day, the sleep-deprived group sleeps more (i.e., rebounds) compared with the control.
18 Μαΐ 2017 · Sleep deprivation triggers a set of bidirectional changes in brain activity and connectivity, depending on the specific cognitive or affective behaviours engaged.
18 Οκτ 2024 · This article provides a concise overview of the anatomy, neurochemistry, and physiology of normal sleep and sleep homeostasis, with an eye toward the interface between sleep and metabolism. Other articles in this issue will more directly address aspects of sleep in relation to diabetes.
