University of Tsukuba researchers have found that 60 minutes of vigorous exercise improved objective measures of sleep, particularly by reducing the amount of time it takes to fall asleep and by enhancing the stability and power of slow waves during non-rapid eye movement sleep. However, the participants did not report a subjective increase in sleep quality. Thus, exercise may improve sleep quality even if it does not feel like it has a beneficial effect.
For something we spend one-third of our lives doing, we still understand remarkably little about how sleep works -- for example, why can some people sleep deeply through any disturbance, while others regularly toss and turn for hours each night? And why do we all seem to need a different amount of sleep to feel rested?
Addressing sleep symptoms during menopause may reduce susceptibility to weight gain, according to a small study presented virtually at ENDO 2021, the Endocrine Society's annual meeting.
Among women who develop diabetes during pregnancy, night owls have a higher risk of complications for mother and baby than early birds do, according to a study whose results will be presented at ENDO 2021, the Endocrine Society's annual meeting.
Veterans with PTSD who practiced the Transcendental Meditation technique showed significant reductions in PTSD symptom severity, according to a new study published in Journal of Traumatic Stress. Fifty percent of the meditating veterans no longer met criteria for PTSD after three months compared to only 10 percent of controls. The randomized controlled study also showed significant reductions in veterans' symptoms of depression and anxiety, and sleep difficulties.
Those who have have persistent trouble sleeping may be at higher risk for developing what's known as complicated grief after the loss of a loved one, a new study co-authored by a University of Arizona researcher finds.
Sound sleep plays a critical role in healing traumatic brain injury, a new study of military veterans suggests.
Animals that hibernate in the wild rarely do so in zoos and sanctuaries, with their climate controls and year-round access to food. But now our closest hibernating relative has gone into true, deep hibernation in captivity for the first time at the Duke Lemur Center. Studying dwarf lemur torpor may help humans safely enter and emerge from suspended states, such as when cardiac surgeons cool patients to slow their hearts for life-saving surgery.
Researchers reveal the path of information received by the hippocampus. Using optogenetics during large-scale recordings of rat subiculum, they discovered that the subiculum distributes information from the hippocampus to 4 downstream regions of the brain. They observed that the theta and sharp-wave/ripples in the subiculum controlled information transmission with millisecond precision according to the target region. This provides the foundation for a comprehensive understanding of the hippocampal memory system.
Researchers have found an explanation for why Alzheimer's drugs have limited effectiveness and why patients get much worse after going off of them.