How coffee affects a sleeping brain
Caffeine is not only found in coffee, but also in tea, chocolate, energy drinks and many soft drinks, making it one of the most widely consumed psychoactive substances in the world.
May 28, 2025
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Psychological Phenomena: News and Research on Sleep, REM
MeSH tree: F02.830.855.796.671
Snooze alarms disrupt key sleep stages: Most people still use them despite expert advice
Sleep experts recommend against snoozing after a wake-up alarm, but a study led by researchers at Mass General Brigham shows the practice is common, with more than 50% of sleep sessions logged ending in a snooze alarm and ...
May 19, 2025
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Sleep apnea during REM sleep linked to memory-related brain changes
Obstructive sleep apnea, a condition that causes lower oxygen levels during sleep, is linked to degeneration of brain regions associated with memory through damage to the brain's small blood vessels, according to a study ...
May 7, 2025
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Recommendations on wearable sleep trackers aim to empower consumers and clinicians, and foster industry partnership
Millions worldwide who turn to wearable devices for sleep insights are set to benefit from recommendations on the use of wearable consumer health trackers (CHTs) for sleep measurement released by the World Sleep Society. ...
Apr 25, 2025
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Advancing understanding of lucid dreaming in humans
Lucid dreaming is a surreal phenomenon in which people are consciously aware that they are in a dream. Çağatay Demirel, from Donders Center for Cognitive Neuroimaging, Radboud University Medical Center, and colleagues shed ...
Apr 21, 2025
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Study links lower proportions of certain sleep stages to brain changes associated with Alzheimer's disease
New research reveals that lower proportions of specific sleep stages are associated with reduced brain volume in regions vulnerable to the development of Alzheimer's disease over time.
Mar 31, 2025
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Fueling sleep: Researchers show key metabolic link to restful nights
Scientists have long recognized the brain's need for energy, but new research from the University of Kentucky's Sanders-Brown Center on Aging has now illuminated how the brain's energy utilization significantly influences ...
Mar 27, 2025
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New research suggests delayed REM sleep may signal Alzheimer's onset in older adults
Scientists have recently shown that both the quality and the amount of sleep we get may influence our risk of developing Alzheimer's disease.
Jan 27, 2025
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Alcohol may help you fall asleep faster, but it leads to a worse night's rest overall—here's why
Alcohol is often used as a sleep aid—with some people crediting a "nightcap" with helping them fall asleep more easily. But while it might be nice to unwind after a long day with a glass of wine or a beer, alcohol may not ...
Jan 20, 2025
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Sleep's secret power: Blocking unwanted memories
The link between poor sleep and mental health problems could be related to deficits in brain regions that keep unwanted thoughts out of mind, according to research from the University of East Anglia (UEA).
Jan 2, 2025
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