Several studies suggest that sleep deprivation is linked to impaired clinical performance, though others show that young doctors can rise to the occasion and solve clinical problems. Medical interns and residents work long hours they have reduced time to sleep, and what sleep they get is often interrupted by medical calls. Whatever the cause, sleep deprivation has predictable consequences, including daytime somnolence, depression and irritability, impaired concentration and judgment, and diminished performance both on the job and off. Shift work is one example of a situation in which people who are capable of sleeping well are unable to get the sleep they need. Insomnia deprives men of restorative sleep, but there are many other causes of sleep deprivation. Sleep requirements change during the course of a lifetime most children need more sleep, most older adults, less. Still, most middle-aged people function best on seven to nine hours of sleep, while others need up to 11 hours. There is no "normal" amount of sleep what matters is how well, not how long you sleep. The two states continue to alternate, with four to six 90- to 110-minute cycles occurring during the course of a typical night's sleep. The sympathetic nervous system is active, stimulating production of adrenaline, the "stress hormone." Most men develop penile erections during REM sleep.Īfter about 30 to 45 minutes, sleep shifts back from REM to the non-REM pattern. Although the body is entirely relaxed, the heart rate and blood pressure fluctuate from low to high the heart pumps less blood to the body but more to the brain. But the brain is turned on dreaming occurs only during REM sleep. Breathing is very slow and may even pause briefly. In contrast, the limb muscles are completely limp and immobile. Although the eyes remain closed, they move rapidly in all directions. The muscles are relaxed, but body movements do occur.Īfter about 45 to 60 minutes, sleep shifts into its REM phase. The circulation slows, too, as the heart rate and blood pressure fall. During non-REM sleep, the mind slows down. They enter non-REM sleep first, moving gradually from light sleep (Stage 1) to deep sleep (Stage 4). Good sleepers fall asleep quickly, usually in less than 15 minutes. Sleep is divided into two major phases, rapid eye movement (REM) sleep and non-rapid eye movement (non-REM) sleep. But although it's restful, sleep is actually quite complex and busy in its own right. Sleep is essential for health, providing rest and restoration for mind and body. Fortunately, lifestyle changes and behavioral treatment can help many sufferers, and medication is available for those who need it. A lucky few get relief from counting sheep, watching late-night movies, or sipping warm milk (or something stronger) - but most people with insomnia need more assistance. But for many men, it's a nightly struggle. This site was originally launched on August 1, 2021, and is maintained by the Harvard Medical School Division of Sleep Medicine.For a complete list of the personnel involved in the creation of this site, please visit the Credits page.Nearly everyone has spent at least one night lying in bed wishing for sleep. The site's content has been reviewed by members of the DSM faculty. Additionally, there are interviews with experts who provide additional background information on some of the science underlying why we have cycles of sleep and wakefulness, and how to diagnose and treat insomnia. All of the material on this site has been prepared under the direction of the editor-in-chief of the DSM's Sleep and Health Education Program, Dr. Their comments reflect their individual experiences and should not be considered medical advice. On this website, you’ll find information on the symptoms of insomia, the theories about why insomnia occurs, tips for improving sleep, and ways insomnia is diagnosed and treated. Video profiles of patients highlight the impact insomnia has had on their lives and the benefits of diagnosis and treatment. Although it is intended for a lay audience, nonspecialist medical professionals may find it useful. This module provides information on insomnia for people with insomnia, their family, friends, colleagues, and teachers. The DSM is doing this in the hopes that clear, accurate information will help individuals improve their sleep, a vital component of human health. The project seeks to translate medical and scientific research on sleep in accessible and useful ways for a general audience. Insomnia is the fifth in a series of websites produced by the Harvard Medical School Division of Sleep Medicine (DSM).
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |