Articles tagged with Sleep Deprivation
A study funded by NIH found that astrocytes, not neurons, contribute to the urge to sleep when wakefulness is prolonged. The release of adenosine from these support cells causes sleep-inducing effects that can be inhibited by caffeine.
A study found that increased on-call workload in medical interns is linked to less sleep, longer shifts, and lower participation in educational activities. The researchers analyzed 1,100 call nights and discovered a significant association between admission workload and shift duration.
Researchers found that losing sleep for part of one night activates cellular pathways producing tissue-damaging inflammation, linked to increased risk of cardiovascular disease and autoimmune disorders. Good sleep habits may ease this risk.
A study published in PLOS Biology suggests that sleep is crucial for brain function, allowing the brain to regroup after a hard day of learning. The research proposes that sleep enables the brain to consolidate new memories and 'forget' random impressions, making it essential for continued learning.
Researchers found that genetically tweaking a part of the brain involved in learning and memory in fruit flies allowed them to stay sharp even after being deprived of sleep. This discovery may lead to new treatments for mental acuity, particularly for people who need to stay awake for extended periods.
A recent animal study found that inadequate sleep in elderly mice exacerbated cellular aging, leading to increased misfolded proteins and cell death. The unfolded protein response was impaired in old mice, failing to properly handle protein synthesis in the endoplasmic reticulum.
A study by Tracy L. Rupp found that extending nightly sleep duration improves alertness and performance during subsequent sleep restriction and facilitates faster recovery. The research suggests that individual differences in resilience to sleep loss are partly a function of modifiable long-term sleep habits.
A study of 1,529 college students found that those involved in extracurricular activities were more likely to experience insomnia, excessive daytime sleepiness, and reduced sleep duration. The study suggests a 'dose-related' association between extra-curricular activity hours and sleep quality.
Neuroscience researchers found that sleep-deprived brains can process simple visuals but struggle with higher-level visual tasks, such as recognizing letters. The study suggests that sleep deprivation can lead to periods of normal functioning followed by severe drops in visual processing and attention.
Researchers from Université de Montréal found that sleep deprivation can trigger sleepwalking in predisposed individuals. The study, published in Annals of Neurology, showed that sleepwalkers who experienced one night of sleep followed by one night of wakefulness had a significant increase in behavioral episodes.
A new study found that sleep deprivation can precipitate sleepwalking in predisposed individuals and may serve as a valuable tool in diagnosing the disorder. The study showed that sleep deprivation significantly increased the proportion of sleepwalkers experiencing complex episodes, facilitating diagnosis.
Researchers found that pigeons increase slow-wave sleep to recover from sleep loss, mirroring human brain function. This discovery sheds light on the role of sleep in animals and may provide insights into human sleep patterns.
A study published in SLEEP found that REM sleep deprivation in rats reduced cell proliferation by 63% compared to non-deprived controls. This suggests a critical role for REM sleep in facilitating brain plasticity and adult neurogenesis.
Researchers at Columbia University Medical Center have discovered a brain region that can be stimulated to reduce cognitive deficits associated with sleep deprivation. The study used repetitive transcranial magnetic stimulation (rTMS) to improve working memory performance in young adults after extended sleep deprivation.
C. elegans displays a sleep-like state called lethargus, which parallels human sleep patterns and is linked to nervous system development, suggesting that sleep facilitates neural growth and adaptation.
A new study published in the journal Sleep found that short sleep duration is associated with an increased risk of developing type 2 diabetes. The study, which followed over 8,992 subjects for eight to ten years, revealed that those who slept less than five hours or more than nine hours per night were more likely to develop diabetes.
A study by Kaiser Permanente and Harvard Medical School found that new mothers who slept five hours or less per day had a threefold higher risk for substantial weight retention (11 pounds or more) at their baby’s first birthday. Getting enough sleep, even just two hours more, may be as important as a healthy diet and exercise for new m...
A new study published at the American Heart Association's Scientific Sessions found that cholesterol-lowering medication simvastatin can disrupt sleep patterns in some individuals. Researchers compared two types of statins and observed a significant adverse effect on sleep quality among those taking simvastatin.
A new study finds that sleep deprivation leads to overactive emotional centers in the brain, causing irrational behavior. The prefrontal lobe is shutdown, making it difficult for people to regulate their emotions.
A study found that sleep deprivation excessively boosts the part of the brain connected to depression, anxiety, and other psychiatric disorders. The amygdala becomes hyperactive in response to negative visual stimuli, shutting down the prefrontal cortex and preventing the release of chemicals needed for calmness.
The EU-funded sleep research project has investigated the effects of partial sleep loss on human health, finding that individuals' ability to perform complex tasks decreases with restricted sleep. The study also revealed changes in the immunological system, including increased C-reactive protein levels.
Research published in BMC Neuroscience found that genetic genes controlling the body clock also regulate the need for sleep, linking sleep to energy metabolism. The study used mice with different genetic make-ups to explore this connection, revealing changes in gene expression associated with sleep deprivation and recovery.
A study by Danish researchers found that acute sleep deprivation leads to increased urinary output and more salt in urine, particularly in men. The findings also showed a reduced nighttime dip in blood pressure, lower levels of sodium-regulating hormones, and excessive excretion of osmoles.
A recent study by Northwestern University researchers found that animals who are partially sleep deprived over consecutive days no longer attempt to catch up on sleep, despite an accumulating sleep deficit. This suggests that chronic partial sleep loss negatively affects the body's ability to compensate for lost sleep.
A study by Cheri Mah of Stanford University found that athletes who got extra sleep showed significant improvements in sprint time and shooting percentages. They also reported increased energy, improved mood, and reduced fatigue during practices and games.
Research shows that students with medical-related majors report worse global Pittsburgh Sleep Quality Index scores, indicating poorer sleep quality compared to humanities majors. Additionally, STEM majors experience longer sleep deprivation and higher rates of sleep medication use.
Research at St. Lawrence University found that pulling all-nighters leads to lower grade-point averages among college students. The study of 111 students indicates inadequate sleep quality and quantity negatively impact academic performance.
A recent study reveals that USMC members suffer from chronic sleep deprivation due to combined physical exertion and threat of enemy fire. This can impair their vigilance and decision-making, posing a risk to themselves and others.
A study of 1,362 Chinese adolescents found that sleep deprivation was significantly associated with increased risk of smoking and drinking. Sleeping less than eight hours at night, nightmares, and difficulty initiating sleep were key factors linked to these behaviors.
Research suggests that children's brain responses can accurately predict the impact of sleep loss on their ability to pay attention during the day. A study found that brain activity accounted for 44% of predicting visual attention scores after one week of reduced sleep.
A study of 289 night shift nurses found 56% were sleep deprived, leading to increased error rates and safety risks. Experts recommend 7-8 hours of sleep per night for optimal health and performance.
Airport baggage screeners may struggle to detect low-prevalence targets during sleep deprivation, impairing their performance. A study found that as time awake increases, errors rise while speed of detection accelerates, suggesting decision-stage impairments.
A study presented at SLEEP 2007 found that even a single night of sleep deprivation affects drivers' ability to coordinate eye movements with steering. The results suggest that sleep deprivation can lead to acute and chronic reductions in eye-steering coordination, potentially increasing the risk of accidents.
Researchers found that sleep-deprived individuals can only process a small number of objects at a time, leading to memory decline. The brain's visual areas are also impaired, making it difficult to focus attention.
Researchers found that BiP levels increase after prolonged wakefulness and decline during recovery sleep, affecting the need for additional rest. The study suggests that protective mechanisms against cellular stress may be attenuated after sleep deprivation, requiring animals to sleep more to recover.
A study published in SLEEP found that sleep deprivation can adversely affect decision-making at a gambling table by elevating the expectation of gains and making light of losses. Brain imaging revealed selectively more active anticipation of reward in the nucleus accumbens, while attenuated response to losses in the insula.
A new study published in the journal Sleep found that sleep disturbance increases spontaneous pain in women. The study, conducted by Michael T. Smith and colleagues, used polysomnography to assess 32 healthy females and found that fragmented sleep profiles led to impaired natural pain control mechanisms.
Researchers found that people with a specific variation of the PERIOD3 gene, which regulates morning and evening activity levels, experience poor attention and working memory during early morning hours when kept awake. Those with this gene variant spend more time in slow-wave sleep when allowed to sleep normally.
A study published in SLEEP found that sleep deprivation significantly affects the ability to integrate emotion and cognition for guiding moral judgments. Continuous wakefulness has a particularly debilitating effect on judgment and decision-making processes.
A new study published in the journal SLEEP found that sleepy driver near-misses may be dangerous precursors to actual accidents. The study analyzed 35,217 individuals and reported that near-miss accidents associated with sleepiness were common, occurring in 18.3% of the sample.
A recent study by University of Missouri-Columbia professor Daniel Vinson found that patients who reported feeling sleepy were less likely to be injured. This contradicts the commonly accepted theory that sleep deprivation increases injury risk, suggesting a possible link between daytime sleepiness and reduced physical activity.
Researchers have identified amylase, an enzyme in saliva, as a biochemical marker linked to sleep loss. Flies subjected to prolonged sleep deprivation showed increased amylase levels, similar to humans who were kept awake for extended periods. The discovery aims to develop diagnostic tools and improve understanding of sleep disorders.
Psychological and behavioral therapies are considered an effective treatment for insomnia, producing reliable changes in several sleep parameters. The studies found that treatments such as cognitive behavioral therapy and relaxation conditions were effective for primary insomnia, with benefits well sustained over time.
Shorter nightly sleep in childhood may be a contributing factor to the growing obesity epidemic. Research suggests that insufficient sleep can disrupt normal metabolism and increase the risk of obesity, insulin resistance, and cardiovascular disease.
A new study at the Université de Montréal found that caffeine taken before a night shift or studying significantly hurts recovery sleep the next day. Caffeine makes daytime sleep episodes too shallow to override the biological clock, reducing sleep efficiency and duration.
Researcher Dr. Sean Drummond studied the effects of sleep deprivation on decision making, attention, and working memory performance. After 64 hours without sleep, volunteers' brains were unable to recruit help, highlighting the need for better understanding of sleep deprivation's consequences.
A new study published in the American Journal of Epidemiology found that middle-aged adults spend an average of 6.1 hours asleep per night, despite spending 7.5 hours in bed. The study also revealed significant racial and socioeconomic disparities in sleep duration, with African-American men sleeping only 5.1 hours a night.
A new IOM report emphasizes the significant impact of sleep disorders on public health, citing links to cardiovascular disease, obesity, and diabetes. The National Heart, Lung, and Blood Institute supports research and education initiatives to address these issues.
A new guide for junior doctors suggests that napping as short as 20-45 minutes can provide positive benefits for shift workers. This guidance aims to improve the survival and recovery of medical professionals working night shifts, ensuring better patient care.
A new CU-Boulder study found that morning grogginess can cause diminished short-term memory, counting skills, and cognitive abilities. Cognitive deficiencies following 24 hours of sleep deprivation have previously been shown to be comparable to the effects of alcohol intoxication.
The EU-funded sleep restriction project aims to characterize the effects of sleep loss on performance, mood, and quality of life. Researchers from five countries are working together to provide funding for doctoral and post-doctoral researchers and a high-level research training program.
A study of 34 young pediatric residents found that working long hours and overnight shifts impairs their attention, judgment, and driving abilities. The researchers compared the effects of heavy work shifts with those of consuming three to four alcoholic drinks, revealing similar impairments in both cases.
A new drug, CX717, has been shown to reverse the negative effects of sleep deprivation on brain activity and performance in monkeys. The drug targets AMPA receptors involved in cell-to-cell communication, restoring normal brain patterns and improving cognitive function.
Research suggests high school start times deprive teens of sleep, affecting cognitive performance and mood. Students perform better in the afternoon, but early morning classes report being wearier and less alert.
Scientists at the University of Wisconsin-Madison have identified a key gene involved in regulating sleep duration, which could lead to new approaches to treating sleep irregularities. The study found that mutations in this gene affect the amount of sleep individuals need and can even impact life span.
A new study reveals that sleep loss significantly increases cardiovascular disease risk in alcoholics, disrupting heart rate and sympathetic catecholamine levels. Behavioral treatments may help alleviate sleep abnormalities and related physiological issues.
A new study suggests that insufficient sleep may be a contributing factor to weight gain and the development of metabolic syndrome. This condition increases the risk of serious diseases such as diabetes and cardiovascular disease.
Research subjects who slept only four hours a night experienced an 18% decrease in leptin and a 28% increase in ghrelin, leading to a 24% increase in appetite. The study also found that sleep-deprived individuals tend to crave more sugary and salty foods.
Researchers discovered that migrating birds sleep less during migration periods and still perform normally. However, they experience impaired performance when not migrating, similar to humans with sleep disorders. The study provides an intriguing model for studying mechanisms of seasonal mood disorders.
A multi-institutional study reveals that medical residents experience significant adverse effects from sleep loss and fatigue on their cognitive abilities, relationships with patients and staff, and daily life. The study highlights the need for more education and countermeasures to address this critical issue in resident well-being.