Abstract
Problems with sleep are one of the commonest reasons for seeking medical attention. Knowledge gained from basic research into sleep in animals has led to marked advances in the understanding of human sleep, with important diagnostic and therapeutic implications. At the same time, research guided by human sleep disorders is leading to important basic sleep concepts. For example, sleep may not be a global, but rather a local, brain phenomenon. Furthermore, contrary to common assumptions, wakefulness, rapid eye movement (REM) and non-REM sleep are not mutually exclusive states. This striking realization explains a fascinating range of clinical phenomena.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on SpringerLink
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout





Similar content being viewed by others
References
National Commission on Sleep Disorders Research. Report of the National Commission on Sleep Disorders Research (Research DHHS Pub. No. 92. Supplier of Documents, U. S. Government Printing Office, Washington, DC, 1992).
Caples, S. M., Gami, A. S. & Somers, V. K. Obstructive sleep apnea. Ann. Intern. Med. 142, 187–197 (2005).
Guillemiault, C. & Framherz, S. in Principles and Practice of Sleep Medicine (eds Kryger, M. H., Roth, T. & Dement, W. C.) 780–790 (Elsevier Saunders, Philadelphia, 2005).
Nobili, L. et al. Ultradian aspects of sleep in narcolepsy. Neurophysiol. Clin. 26, 51–59 (1996).
Bassetti, C. & Aldrich, M. S. Narcolepsy. Neurologic Clinics 14, 545–571 (1996).
Mignot, E. Genetic and familial aspects of narcolepsy. Neurology 50 (suppl. 1), S16–S22 (1998).
Taheri, S., Zeitzer, J. M. & Mignot, E. The role of hypocretins (orexins) in sleep regulation and narcolepsy. Annu. Rev. Neurosci. 25, 283–313 (2002).
Mignot, E. et al. The role of cerebrospinal fluid hypocretin measurement in the diagnosis of narcolepsy and other hypersomnias. Arch. Neurol. 59, 1553–1562 (2002).
Johns, J., Wu, M.- F. & Siegel, J. M. Systemic administration of hypocretin-1 reduces cataplexy and normalizes sleep and waking durations in narcoleptic dogs. Sleep Res. Online 3, 23–28 (2000).
Bonnet, M. H. & Arand, D. L. Activity, arousal, and the MSLT in patients with insomnia. Sleep 23, 205–212 (2000).
Stepanski, E., Zorick, F., Roehrs, T., Young, D. & Roth, T. Daytime alertness in patients with chronic insomnia compared with asymptomatic control subjects. Sleep 11, 54–60 (1998).
Vgontzas, A. N. et al. Chronic insomnia is associated with nyctohemeral activation of the hypothalamic-pituitary-adrenal axis: clinical implications. J. Endocrinol. Metab. 86, 3787–3794 (2001).
Perlis, M. L., Merica, H., Smith, M. T. & Giles, D. E. Beta EEG activity and insomnia. Sleep Med. Rev. 5, 365–376 (2001).
Smith, M. T. et al. Neuroimaging of NREM sleep in primary insomnia: a Tc-99-HMPAO single photon emission computed tomographic study. Sleep 25, 325–335 (2002).
Lasagna, L. Over-the-counter hypnotics and chronic insomnia in the elderly. J. Clin. Psychopharmacol. 15, 383–386 (1995).
Mendelson, W. B. et al. The treatment of chronic insomnia: drug indications, chronic use and abuse liability. Summary of a 2001 new clinical drug evaluation unit meeting symposium. Sleep Med. Rev. 8, 7–17 (2004).
Schenck, C. H. & Mahowald, M. W. Long-term, nightly benzodiazepine treatment of injurious parasomnias and other disorders of disrupted nocturnal sleep in 170 adults. Am. J. Med. 100, 333–337 (1996).
Hajak, G., Bandelow, B., Zulley, J. & Pittrow, D. ‘As needed’ pharmacotherapy combined with stimulus control treatment in chronic insomnia — assessment of a novel interventional strategy in a primary care setting. Ann. Clin. Psychiatry 14, 1–7 (2002).
Morin, C. M., Bastien, C. H., Brink, D. & Brown, T. R. Adverse effects of temazepam in older adults with chronic insomnia. Hum. Pschyopharmacol. Clin. Exper. 18, 75–82 (2003).
Dawson, D. & van den Heuvel, C. J. Integrating the actions of melatonin on human physiology. Ann. Med. 30, 95–102 (1998).
Phillips, B. et al. Epidemiology of restless legs symptoms in adults. Arch. Intern. Med. 160, 2137–2141 (2000).
Trenkwalder, C. et al. Circadian rhythm of periodic limb movements and sensory symptoms of restless legs syndrome. Mov. Dis. 14, 102–110 (1999).
Winkelman, J. et al. ‘Anxietas Tibiarum’. Depression and anxiety disorders in patients with restless legs syndrome. J. Neurol. 252, 67–71 (2005).
Desautels, A. et al. Restless legs syndrome. Confirmation of linkage to chromosome 12q, genetic heterogeneity, and evidence of complexity. Arch. Neurol. 62, 591–596 (2005).
Allen, R. P. & Earley, C. J. Restless legs syndrome: a review of clinical and pathophysiologic features. J. Clin. Neurophysiol. 18, 128–147 (2001).
Bucher, S. F., Seelos, K. C., Oertel, W. H., Reiser, M. & Trenkwalder, C. Cerebral generators involved in the pathogenesis of the restless legs syndrome. Ann. Neurol. 41, 639–645 (1997).
Turjanski, N., Lees, A. J. & Brooks, D. J. Striatal dopaminergic function in restless legs syndrome. Neurology 52, 932–937 (1999).
Tergau, F., Wischer, S. & Paulus, W. Motor system excitability in patients with restless legs syndrome. Neurology 52, 1060–1063 (1999).
Stiasny-Kolster, K., Magerl, W., Oertel, W. H., Moller, J. C. & Treede, R.- D. Static mechanical hyperalgesia without dynamic tactile allodynia in patients with restless legs syndrome. Brain 127, 773–782 (2004).
von Spiczak, S. et al. The role of opioids in restless legs syndrome: an [11C]diprenorphine PET study. Brain 128, 906–917 (2005).
Moore-Ede, M. C., Sulzman, F. M. & Fuller, C. A. The Clocks That Time Us: Physiology of the Circadian Timing System (Harvard Univ. Press, Cambridge, MA, 1982).
Sack, R. L., Lewy, A. J., Blood, M. L., Keith, L. D. & Nakagawa, H. Circadian rhythm abnormalities in totally blind people; incidence and clinical significance. J. Clin. Endocrinol. Metab. 75, 127–134 (1992).
Sack, R. L., Lewy, A. J. & Hughes, R. J. Guidelines for prescribing melatonin for sleep and circadian rhythm disorders. Ann. Med. 30, 115–121 (1998).
Czeisler, C. A., Richardson, G. S. & Coleman, R. M. Chronotherapy: resetting the circadian clocks of patients with delayed sleep phase insomnia. Sleep 4, 1–21 (1981).
Reid, K. J. & Zee, P. C. in Principles and Practice of Sleep Medicine (eds Kryger, M. H., Roth, T. & Dement, W. C.) 691–701 (Elsevier Saunders, Philadelphia, 2005).
Yamadera, H., Takahashi, K. & Okawa, M. A multicenter study of sleep-wake rhythm disorders: clinical features of sleep-wake rhythm disorders. Psychiatr. Clin. Neurosci. 50, 195–201 (1996).
Xu, W. et al. Functional consequences of a CKI-delta mutation causing familial advanced sleep phase syndrome. Nature 434, 640–644 (2005).
Toh, K. L. et al. An hPer2 phosphorylation site mutation in familial advanced sleep phase syndrome. Science 291, 1040–1043 (2001).
Archer, S. N. et al. A length polymorphism in the circadian clock gene Per3 is linked to delayed sleep phase syndrome and extreme diurnal preference. Sleep 26, 413–415 (2003).
Dagan, Y., Yovel, I., Hallis, D., Eisenstein, M. & Raichik, I. Evaluating the role of melatonin in the long-term treatment of delayed sleep phase syndrome (DSPS). Chronobiol. Inter. 15, 181–190 (1998).
Mahowald, M. W. & Schenck, C. H. Evolving concepts of human state dissociation. Arch. Ital. Biol. 139, 269–300 (2001).
Mahowald, M. W. & Schenck, C. H. in Principles and Practice of Sleep Medicine (eds. Kryger, M. H., Roth, T. & Dement, W. C.) 786–795 (W. B. Saunders, Philadelphia, 2000).
Fisher, C., Kahn, E., Edwards, A. & Davis, D. M. A psychophysiological study of nightmares and night terrors. I. Physiological aspects of the stage 4 night terror. J. Nerv. Ment. Dis. 157, 75–98 (1973).
Fisher, C., Kahn, E., Edwards, A., Davis, D. M. & Fine, J. A psychophysiological study of nightmares and night terrors. III. Mental content and recall of stage 4 night terrors. J. Nerv. Ment. Dis. 158, 174–188 (1974).
Schenck, C. H., Hurwitz, T. D., Bundlie, S. R. & Mahowald, M. W. Sleep-related injury in 100 adult patients: a polysomnographic and clinical report. Am. J. Psychiatr. 146, 1166–1173 (1989).
Guilleminault, C., Moscovitch, A. & Leger, D. Forensic sleep medicine: nocturnal wandering and violence. Sleep 18, 740–748 (1995).
Llorente, M. D., Currier, M. B., Norman, S. & Mellman, T. A. Night terrors in adults: phenomenology and relationship to psychopathology. J. Clin. Psychiatr. 53, 392–394 (1992).
Shapiro, C. M., Trajanovic, N. N. & Fedoroff, J. P. Sexsomnia — a new parasomnia? Can. J. Psychiatr. 48, 311–317 (2003).
Winkelman, J. W., Herzog, D. B. & Fava, M. The prevalence of sleep-related eating disorder in psychiatric and non-psychiatric populations. Psychol. Med. 29, 1461–1466 (1999).
Schenck, C. H. & Mahowald, M. W. Review of nocturnal sleep-related eating disorders. Int. J. Eat. Dis. 15, 343–356 (1994).
Rosenfeld, D. S. & Elhajjar, A. J. Sleepsex: a variant of sleepwalking. Arch. Sex. Behav. 27, 269–278 (1998).
Rosen, G., Mahowald, M. W. & Ferber, R. in Principles and Practice of Sleep Medicine in the Child (eds Ferber, R. & Kryger, M.) 99–106 (W. B. Saunders, Philadelphia, 1995).
Nino-Murcia, G. & Dement, W. C. in Psychopharmacology: the Third Generation of Progress (ed. Meltzer, H. Y.) 873–879 (Raven, New York, 1987).
Ohayon, M., Guilleminault, C. & Priest, R. G. Night terrors, sleepwalking, and confusional arousals in the general population: their frequency and relationship to other sleep and mental disorders. J. Clin. Psychiatr. 60, 268–276 (1999).
Klackenberg, G. Somnambulism in childhood — prevalence, course and behavior correlates. A prospective longitudinal study (6-16 years). Acta Paediatr. Scan. 71, 495–499 (1982).
Kahn, E., Fisher, C. & Edwards, A. in The Mind in Sleep. Psychology and Psychophysiology (eds Ellman, S. D. & Antrobus, J. S.) 437–447 (John Wiley & Sons, New York, 1991).
Mahowald, M. W. & Schenck, C. H. in Principles and Practice of Sleep Medicine (eds Kryger, M. H., Roth, T. & Dement, W. C.) 960–968 (Elsevier/Saunders, Philadelphia, 2005).
Mahowald, M. W. & Cramer-Bornemann, M. A. in Principles and Practice of Sleep Medicine (eds Kryger, M. H., Roth, T. & Dement, W. C.) 889–896 (Elsevier/Saunders, Philadelphia, 2005).
Schenck, C. H. in Encyclopedia of the Neurological Sciences (eds Aminoff, M. J. & Daroff, R. B.) 146–149 (Academic, San Diego, 2003).
Mahowald, M. W. & Schenck, C. H. in Principles and Practice of Sleep Medicine (eds. Kryger, M. H., Roth, T. & Dement, W. C.) 897–916 (Elsevier/Saunders, Philadelphia, 2005).
Boeve, B. F. et al. Synuceinopathy pathology often underlies REM sleep behavior disorder and dementia or parkinsonism. Neurology 61, 40–45 (2003).
Eisensehr, I. et al. Reduced striatal dopamine transporters in idiopathic rapid eye movement sleep behavior disorder. Comparison with Parkinson's disease and controls. Brain 123, 1155–1160 (2000).
Eisensehr, I. et al. Increased muscle activity during rapid eye movement sleep correlates with decrease of striatal presynaptic dopamine transporters. IPT and IBZM SPECT imaging in subclinical and clinically manifest idiopathic REM sleep behavior disorder, Parkinson's disease, and controls. Sleep 26, 507–512 (2003).
Albin, R. L. et al. Decreased striatal dopaminergic innervation in REM sleep behavior disorder. Neurology 55, 1410–1412 (2000).
Shirakawa, S.- I. et al. Study of image findings in rapid eye movement sleep behavioral disorder. Psychiatr. Clin. Neurosci. 56, 291–292 (2002).
Fantini, M. L. et al. Slowing of electroencephalogram in rapid eye movement sleep behavior disorder. Ann. Neurol. 53, 774–780 (2003).
Miyamoto, M. et al. Brainstem function in rapid eye movement sleep behavior disorder: the evaluation of brainstem function by proton MR spectroscopy (1H-MRS). Psychiatr. Clin. Neurosci. 54, 350–351 (2000).
Gilman, S. et al. REM sleep behavior disorder is related to striatal monoaminergic deficit in MSA. Neurology 61, 29–34 (2003).
Schenck, C. H. & Mahowald, M. W. Motor dyscontrol in narcolepsy: rapid-eye-movement (REM) sleep without atonia and REM sleep behavior disorder. Ann. Neurol. 32, 3–10 (1992).
Schenck, C. H. & Mahowald, M. W. Polysomnographic, neurologic, psychiatric, and clinical outcome report on 70 consecutive cases with REM sleep behavior disorder (RBD): sustained clonazepam efficacy in 89.5% of 57 treated patients. Cleveland Clin. J. Med. 57 (Suppl.), S9–S23 (1990).
Petersen, A. et al. Orexin loss in Huntington's disease. Hum. Mol. Genet. 14, 39–47 (2005).
Morton, A. J. et al. Disintegration of the sleep-wake cycle and circadian timing in Huntington's disease. J. Neurosci. 25, 1573–163 (2005).
Wisor, J. P. et al. Sleep and circadian abnormalities in a transgenic mouse model of Alzheimer's disease: a role for cholinergic transmission. Neuroscience 131, 375–385 (2005).
Dauvilliers, Y., Maret, S. & Tafti, M. Genetics of normal and pathological sleep. Sleep Med. Rev. 9, 91–100 (2005).
Huber, R. et al. Sleep homeostasis in Drosophila melanogaster. Sleep 27, 628–639 (2004).
Hendricks, J. C. & Sehgal, A. Why a fly? Using Drosophila to understand the genetics of circadian rhythms and sleep. Sleep 27, 334–342 (2004).
Cirelli, C. et al. Reduced sleep in Drosophila Shaker mutants. Nature 434, 1087–1092 (2005).
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Competing interests
The authors declare competing financial interests: Mark W. Mahowald - Research/Grant Support: Takeda, Cephalon, Lorex, Neurocrine, GalaxoKlineSmith, Pharmacia, Pfizer, Boehringer Ingelham, Aventis .
Additional information
Author Information Reprints and permissions information is available at npg.nature.com/reprintsandpermissions.
Supplementary information
Supplementary Movie
Abnormal REM sleep behaviours documented in older men with 'REM sleep behaviour disorder'during sleep laboratory video-polysomnographic monitoring at the Minnesota Regional Sleep Disorders Center. (MPG 5362 kb)
Rights and permissions
About this article
Cite this article
Mahowald, M., Schenck, C. Insights from studying human sleep disorders. Nature 437, 1279–1285 (2005). https://doi.org/10.1038/nature04287
Published:
Issue Date:
DOI: https://doi.org/10.1038/nature04287