intentionally controlled light can help regulate human health and productivity by eliciting various hormonal responses. Tailored LED wavelengths and intensities also can efficiently stimulate plant growth, alter their shapes and increase their nutritional value, opening a new world of scientific and technological possibilities for indoor farming.
People who sleep less than six hours a night may be at increased risk of cardiovascular disease compared with those who sleep between seven and eight hours, suggests a new study published in the Journal of the American College of Cardiology. Poor quality sleep increases the risk of atherosclerosis -- plaque buildup in the arteries throughout the body -- according to the study.
For optimal performance the brain can strike a balance of being alert, but not overly excited, using a circuit mechanism newly teased out by scientists at MIT's Picower Institute for Learning and Memory.
Widely prescribed 'benzodiazepine' sleeping pills suppress the sleeping brain's ability to wake us when it senses a threat. But an alternative class of hypnotics currently under development could allow users to rouse in the event of an earthquake, fire alarm or intruder, according to a new study. Published in Frontiers Behavioral Neuroscience, the research takes millions closer to sleeping safe and sound.
A Medical Research Council funded study published today in the journal Science, has found that astrocytes, previously thought of as just supporting neurons in regulating circadian rhythms, can actually lead the tempo of the body's internal clock and have been shown for the first time to be able to control patterns of daily behavior in mammals.
Researchers at Washington University School of Medicine in St. Louis -- working with mice with sleep problems similar to those experienced by people with the genetic disease neurofibromatosis type 1 (NF1) -- believe the animals will help shed light on insomnia linked to NF1 or other factors.
Researchers at Washington University School of Medicine in St. Louis have uncovered part of the explanation for why poor sleep is linked to Alzheimer's disease. They found that older people who have less slow-wave sleep -- the deep sleep you need to consolidate memories and wake up feeling refreshed -- have higher levels of the brain protein tau. Elevated tau is a sign of Alzheimer's disease and has been linked to brain damage and cognitive decline.
Researchers at the Netherlands Institute for Neuroscience revealed that there are five types of insomnia. Type 1 scores high on many distressing traits such as neuroticism and feeling down or tense. Types 2 and 3 experienced less distress and were distinguished by their high versus low sensitivity to reward. Type 4 and 5 experienced even less distress and differed by the way their sleep responded to stressful life events.
Hospitals often prioritize patient testing and treatment over the restorative virtues of patient sleep. Frequent overnight awakenings, however, can cause complications. The SIESTA study found that a commitment to sleep-friendly routines and changes to the electronic health record system could reduce nighttime disruptions and improve the patient experience.
Taking antidepressants for depression, having post-traumatic stress disorder or anxiety diagnosed by a doctor are risk factors for a disruptive and sometimes violent sleep disorder called rapid eye movement (REM) sleep behavior disorder, according to a study published in the Dec. 26, 2018, online issue of Neurology®, the medical journal of the American Academy of Neurology. The study also found men are more likely to have the disorder.