Articles tagged with Sleep
A six-year study of over 1 million adults found that those who slept 6-7 hours a night had a lower death rate compared to those who slept 8 hours or more. The study, led by UCSD professor Daniel F. Kripke, could not explain the causes behind this association.
Narcolepsy is a lifelong problem characterized by sudden sleep episodes and muscle paralysis triggered by strong emotions. A new study aims to understand the role of hypocretin cells in controlling sleep and arousal, with potential breakthroughs for future treatments.
Patients treated with nocturnal breathing support for sleep apnoea experience a significant reduction in blood pressure, as well as improved quality of life and reduced excessive daytime sleepiness. The study confirms that therapeutic nCPAP treatment produces a clinically important lowering of blood pressure.
Researchers investigated gas exchange between infants and their environment while sleeping facedown on soft bedding. They found that hypoxemia, not hypercarbia, is the more important factor contributing to SIDS deaths, suggesting a new approach to prevention.
A NASA-funded study found that people's internal clocks have difficulty adapting to non-24 hour days, leading to increased risk of fatigue and sleepiness. The study, conducted at the National Space Biomedical Research Institute, evaluated participants' melatonin levels in response to varying day lengths.
A geophysicist proposes that life on Earth may have originated from microorganisms that could survive in high-temperature environments, such as deep beneath the surface. This theory is supported by evidence of ancient organisms thriving in extreme conditions and laboratory experiments showing that microbes can survive in space.
A genetic test targeting cattle could help control sleeping sickness by detecting the SRA gene, which allows T b rhodesiense to survive in human serum. The test has potential for targeted control of T b rhodesiense in livestock reservoirs, reducing public health burden.
Scientists discover that the 'Sleeping Beauty' transposon can deliver gene sequences to correct congenital blood and immune system disorders prenatally. Jakub Tolar's presentation also shows bone marrow stem cells engraft and differentiate into brain and liver cells after in utero transfer.
Researchers investigated the influence of gender on upper airway structure and function, finding no gender differences in resistance and Pcrit. These findings contradict previous assumptions and suggest a possible explanation for the male predominance of OSA, potentially related to neurochemical control or other factors.
Researchers found that astronauts' endogenous circadian pacemaker (ECP) loses its influence after about 90 days in space, leading to reduced sleep quality and duration. This could jeopardize performance on longer missions like those to Mars.
Yale researchers found that diphenhydramine, a commonly prescribed sedative, increases the risk of delirium symptoms in older hospitalized patients. The study suggests that using diphenhydramine as a routine sleeping aid should be discouraged in older hospitalized patients due to potential harm
A recent outbreak of sleeping sickness in eastern Uganda may be attributed to livestock movement from another part of the country where the disease is endemic. The study found that over 50% of cattle traded at the market originated from areas with the disease, and that distance to the market was a significant risk factor for sleeping s...
Researchers have found that aging rats exhibit fragmented behavioral rhythms, taking naps when they should be active. The study suggests that the suprachiasmatic nucleus (SCN) cells, responsible for regulating circadian rhythms, may be losing their ability to mark time as individuals age.
A study by Harvard Medical School researchers found that sleeping the first night improves task performance and memory consolidation. Despite two additional nights of sleep, those who stayed up all night initially showed no improvement.
Researchers found that sleeping songbirds' neurons fire patterns identical to song production, rehearsing the neuronal activity patterns of song generation. This suggests that sleep helps birds learn songs by replaying and strengthening the pattern during undisturbed sleep.
A study by Scott Coffey found that cocaine withdrawal symptoms are relatively mild and decrease steadily over time, with improvements in depression, anxiety, and energy levels.
A recent study found that physician recommendations and media messages significantly influenced caregivers' decisions to place infants on their backs for sleep. Between 1994 and 1998, the percentage of white infants sleeping on their backs increased from 27% to 58%, while black infant back sleep rates rose from 17% to 31%. The study su...
A Mayo Clinic study found that blood pressure levels differ equally between day and night, potentially increasing the risk of heart disease and stroke. The researchers monitored 240 healthy people for 20 consecutive hours, revealing significant variations in blood pressure during sleep.
Researchers found that the heart's fluctuations in beats are strongly correlated with sleep, showing a fractal pattern on both short and long timescales. This suggests a hitherto unsuspected role for sleep in regulating the heartbeat.
A study led by Charles A. Czeisler found that healthy older adults tend to wake up earlier due to restricted sleep hours relative to their circadian period, similar to younger individuals. The study suggests that age does not inherently shorten the human circadian period.
A study of 510 preschool children found that those sleeping less than 10 hours a day are at risk for increased behavioral problems, such as oppositional behavior and aggression. The relationship between sleep and behavior problems is complex, with possible interaction effects between variables like temperament and parenting.
Researchers found that melatonin reacts with peroxynitrite-derived free radicals, forming compounds similar to brain signaling chemicals. These metabolites could impact aspects of behavior, such as mood, with unclear consequences for human health.
NASA gave astronauts melatonin to improve sleep, but found no benefit; instead, electrodes seemed to help them relax and sleep better. Astronauts' duties likely cause insomnia, and monitoring equipment helps them see sleep as part of their mission.
A team of scientists has discovered a genetic mechanism controlling the inner workings of the biological clock, which also drives bodily rhythms such as temperature, blood pressure, hormones, and sleep-wake cycles. The findings may lead to more efficacious treatments for diseases like heart attacks and asthma.
Researchers found strong neurological activity in zebra finch brain region involved in singing during sleep, suggesting a role in consolidating learned songs. The finding runs counter to the motor theory, proposing that birds subconsciously mimic sounds they hear while awake.
Researchers Norman H. Sleep and Cindy J. Ebinger find that a single giant plume of magma rose from Earth's mantle 45 million years ago, shaping Africa's striking geological features such as Mount Kilimanjaro and the Ethiopian plateau.
Research found that young people under 45 with sleep apnea require aggressive treatment to reduce hypertension and cardiovascular issues. The study, published in the American Journal of Respiratory and Critical Care Medicine, included subjects aged 20-100 years old.
Researchers attribute the increase in SIDS deaths to colder months and overbundling, while experts recommend placing babies on their backs to sleep, using firm mattresses and removing soft materials. Early prenatal care, breastfeeding, and smoke-free zones also reduce SIDS risk.
A UPMC study found that people think more slowly at night due to increased information-processing requirements. After losing a night of sleep, participants showed a slowing in the speed of information processing during the day.
Patients with a history of depression often deny or attribute early warning signs, such as fatigue and stress, to external factors. Early intervention is crucial to prevent or minimize relapse, and recognizing these signs can provide control over emerging depressions.
A water-based pillow significantly improved quality of sleep and modestly reduced morning pain intensity compared to standard and roll pillows. The pillow contained a pouch of water, adjustable for firmness, and supported neck muscles and structures damaged by injury or disease.
Arctic ground squirrels experience long periods of torpor punctuated by costly rewarming periods. Hibernation is about finding rest, not conserving energy, according to zoophysiologist Brian Barnes.