1. Recommended Amount of Sleep for a Healthy Adult: A Joint Consensus Statement of the American Academy of Sleep Medicine and Sleep Research Society
Watson, N. F., Badr, M. S., Belenky, G., et al. — Sleep (2015), 38(6), 843–844
Key Finding / Relevance: Establishes the baseline recommendation of 7+ hours of regular nightly sleep for adults to avoid adverse health outcomes.
2. Brain Basics: Understanding Sleep
National Institute of Neurological Disorders and Stroke (NINDS) — National Institutes of Health (NIH) Publication
Key Finding / Relevance: Authoritative clinical overview of sleep architecture, neurotransmitters, circadian pacemaker biology, and sleep stages.
3. The International Classification of Sleep Disorders — Third Edition (ICSD-3)
American Academy of Sleep Medicine (AASM) — AASM Diagnostic Reference Manual (2014)
Key Finding / Relevance: Defines diagnostic criteria for sleep-wake disorders, normal physiological sleep latency benchmarks, and sleep architecture definitions.
4. Social Jetlag: Misalignment of Biological and Social Time
Wittmann, M., Dinich, J., Merrow, M., & Roenneberg, T. — Chronobiology International (2006), 23(1-2), 497–509
DOI: 10.1080/07420520500545979
Key Finding / Relevance: Demonstrates the metabolic and cognitive consequences of shifting sleep schedules between workdays and free days.
5. Overnight Therapy? The Role of Sleep in Emotional Brain Processing
Walker, M. P., & van Der Helm, E. — Psychological Bulletin (2009), 135(5), 731–748
Key Finding / Relevance: Details the neurological function of Stage REM sleep in resetting adrenergic tone and facilitating emotional memory processing.
6. Caffeine Effects on Sleep Taken 0, 3, or 6 Hours before Going to Bed
Drake, C., Roehrs, T., Shambroom, J., & Roth, T. — Journal of Clinical Sleep Medicine (2013), 9(11), 1195–1200
Key Finding / Relevance: Documents the disruption of sleep latency and deep slow-wave sleep when caffeine is consumed within 6 hours of bedtime.
7. Systematic Trends Across the Night in Human Sleep Cycles
Feinberg, I., & Floyd, T. C. — Psychophysiology (1979), 16(3), 283–291
DOI: 10.1111/j.1469-8986.1979.tb02991.x
Key Finding / Relevance: Foundational quantitative polysomnography documenting ultradian cycle duration variability and stage shifts across the night.
Institutional Guidelines Consulted
- Centers for Disease Control and Prevention (CDC) — Sleep and Sleep Disorders Division.
- National Institutes of Health (NIH) — National Heart, Lung, and Blood Institute (NHLBI).
- American Academy of Sleep Medicine (AASM) — Clinical practice guidelines.
- National Sleep Foundation (NSF) — Consensus duration standards.