Why do I talk in my sleep? A sleep psychologist explains
"Why do people speak while they are sleeping?—Mubina, age 15, Uzbekistan"
Sep 14, 2026
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Musculoskeletal and Neural Physiological Phenomena: News and Research on Sleep, REM
MeSH tree: G11.561.803.754.671
High anxiety may alter the brain's sleep switch in preteens
Some preteens have no trouble getting a full night's rest. Those experiencing anxiety often lie awake. The reason for both may be related to a pea-sized gland in the middle of their brains.
Sep 9, 2026
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Sleep could help identify people at risk of developing Alzheimer's disease at an earlier stage
What if certain signs of the disease were to manifest subtly during sleep, long before the first memory problems appear? This is the line of inquiry being explored by a team of researchers at ULiège.
Aug 11, 2026
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Grid cells turn the brain's searchlight from broad scanning to target-focused search
For 20 years, the grid cell was the closest thing neuroscience had to a fixed point. May-Britt Moser and Edvard Moser found them in the rat brain in 2005, work that nine years later would carry them to the king's table in ...
Aug 6, 2026
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When more blood does not mean more neuronal energy during REM sleep
REM sleep is already called "paradoxical sleep." The body is largely still, yet the brain is highly active. In humans, this is also the stage most closely associated with vivid dreaming. Our study, published in Communications ...
Dreams drain energy: The REM sleep paradox
The brain demands a lot of energy compared with other organs. However, it can also make do when energy supplies are scarce, flexibly processing information using what is available. How the brain resourcefully allocates this ...
Jul 28, 2026
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Brighter days linked to better sleep, study finds
A new study led by University of Manchester scientists has revealed that brighter, more consistent daytime light exposure could be key to earlier bedtimes, better-quality sleep and deeper rest. The research throws new light ...
Jul 10, 2026
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Coordinated brainstem slow waves may determine when it's time for REM sleep
Sleep is one of the most widely studied states of consciousness, known to play a role in physical recovery, the processing of memories and the regulation of immune functions. During sleep, the brain transitions between light ...
Why you wake up so tired after vivid dreams
Some mornings when you wake up, your head is fuzzy, your body is heavy, and you don't feel rested. It felt like you were dreaming all night. But did all that dreaming actually wear you out? Let's look at what the science ...
May 27, 2026
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How the sleeping brain simulates the world during REM sleep
In his wildest dreams, HHMI Investigator Massimo Scanziani never imagined he'd study sleep. But, when a postdoc in the lab suggested studying eye movements in sleeping animals, Scanziani's curiosity was awakened.
May 26, 2026
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