2019年4月22日 · Non-REM sleep includes three different stages. 1 A person cycles through REM sleep and non-REM sleep several times a night. For more detailed information about what happens during sleep and phases of sleep, check out Your Guide to Healthy Sleep , from the National, Heart, Lung, and Blood Institute.

2017年6月19日 · Sleep is a complex biological process that helps people process new information, stay healthy, and re-energize. Periods of sleep and wakefulness are part of how our bodies function. Although you are resting while you sleep, your brain remains highly active. Sleep consists of different stages that repeat several times each night. During sleep, the brain cycles …

2021年8月4日 · Sleep is essential for daily activities, performance, learning, and overall health. Insufficient sleep—getting too little sleep or not enough quality sleep—is a leading cause of accidents, lost productivity, and illness. NICHD supports many areas of research on sleep, including how sleep occurs, how a lack of sleep affects health and behavior, and conditions …

2017年6月12日 · Alcohol prevents people from entering deep sleep (sleep stage 3) and rapid eye movement (REM) sleep. Relax before bed. Try taking a warm bath, reading, or drinking warm herbal tea before falling asleep. You can train yourself to associate these types of restful activities with sleep, particularly if you make them part of your nighttime ritual.

The change in melatonin during the sleep/wake cycle reflects circadian rhythms. During sleep, the hypothalamus also controls changes in body temperature and blood pressure. Because circadian rhythms are controlled by light, people who have some degree of blindness in both eyes may have trouble sleeping.

Health care providers and researchers don't know the exact cause, but there are many theories. More and more research evidence suggests that infants who die from sudden infant death syndrome (SIDS) are born with brain abnormalities or defects. These defects are typically found within a network of nerve cells that rely on a chemical called serotonin that allows one nerve …

2017年1月31日 · SIDS is the sudden, unexplained death of an infant younger than 1 year of age that remains unexplained after a complete investigation. This investigation can include an autopsy, a review of the death scene, and complete family and medical histories.1 A diagnosis of SIDS is made by collecting information, conducting scientific or forensic tests, and talking with …

2007年9月18日 · Friedman TC, Diego G-B, Hardwick D, Akuete CN, Stambuk MK, Dorn LD, Starkman M, Loh YP and Chrousos GP (1994) Diurnal rhythm of plasma delta sleep-inducing peptide in humans: Evidence for positive correlation with body temperature and negative correlation with REM and slow wave sleep. J Clin Endocrinol and Metab 78:1085-1089.

Sleep disorders are a group of more than 70 major sleep problems with symptoms that can include inappropriate sleep, severe sleep deprivation, and periods of stopped breathing. People with sleep disorders usually benefit from treatments and monitoring from a healthcare provider.

2025年1月6日 · Each year, NICHD reflects on selected highlights from the past 12 months that demonstrate how public investment in research drives scientific progress and benefits human health.