Overview
The physiology of sleep is the study of the biological processes that generate, regulate, and sustain sleep and of the functions sleep performs for the body and brain. Sleep is an active, reversible state organized into recurring cycles of non-rapid-eye-movement and rapid-eye-movement stages, each with characteristic patterns of brain electrical activity, muscle tone, and autonomic function. Its timing and architecture are governed by two interacting systems: a homeostatic drive that builds with wakefulness and dissipates during sleep, and the circadian clock, which aligns sleep–wake timing to the day–night cycle largely through light. A network of brainstem, hypothalamic, and thalamic centers, together with neurotransmitter and neuromodulator systems, orchestrates transitions between waking and sleep stages; signaling systems such as the endocannabinoid system are implicated in circadian regulation and sleep modulation. Physiologically, sleep supports restoration and energy conservation, regulation of hormones and metabolism, immune function, and central nervous system processes including memory consolidation and clearance of metabolic by-products. Respiratory, cardiovascular, and thermoregulatory control all shift during sleep, and breathing patterns are especially sensitive to sleep state. Understanding normal sleep physiology provides the foundation for recognizing sleep disorders, interpreting measures of sleep quality, and appreciating how disrupted or insufficient sleep affects physical and cognitive health across the lifespan in both children and adults.
Research published in this journal
5 peer-reviewed articles, ranked by relevance. Each links to its DOI.
A Review and Update on the Biochemical Basis of Conscious Breathing (Pranayama)
A Comparative Study of the Impact of Himalayan Singing Bowls and Supine Silence on Stress Index and Heart Rate Variability
Obstructive Sleep Apnea Treatment with Epap Nasal Devices: Physiological Principles and Limitations
Hypertension in Hypoxia
How this research is being cited
The 5 articles above have been cited 40 times in the scholarly literature. Citation data via OpenAlex and Crossref, updated Jun 2026.
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2026 · Frontiers in Cognition
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2025 · Integrative Medicine Research
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2025 · Healthcare
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2025 · Integrative Medicine Research
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Fei-Wen Lin et al. · 2025 · Healthcare
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2024 · Sensors
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2024 · Open Book Publishers
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2024 ·
A sample of recent works citing this journal's research on Physiology of Sleep, linking to each citing work.