Explore the neuroscience of sleep and discover how the brain regulates sleep cycles and dreams.
After a sleepless night, attention falters without warning. These subtle failures reflect a brain oscillating between wakefulness and rest, despite the appearance of being awake. Sleeping too little is not just a persistent feeling of fatigue. Even after the first shortened night, sustained attention becomes unstable, reaction times slow, and brief episodes of disconnection occur,…
Sleep may not depend on neurons alone. Recent studies suggest that other, long-overlooked cells may help regulate its mechanisms. Long regarded as mere support cells, astrocytes are now emerging as key players in the orchestration of sleep. Recent studies reveal that these glial cells do far more than accompany neurons they actively regulate sleep cycles,…
In summer, heat doesn’t just tire the body, it also alters our state of consciousness. In summer, heat doesn’t just lull the body, it also dulls our alertness. In the midst of an afternoon, lying in the shade or sitting still, you may notice your thoughts begin to drift. Eyes half-closed, sounds fade away, and…
A cold light in the dark and sleep slips away. Screens don’t just distract us; they actively deceive the brain. Midnight. In the stillness of a darkened room, the cold glow of a smartphone draws the gaze of a tired eye. As eyelids grow heavy, fingers continue their silent dance across the screen, responding to…
We thought sleep meant shutting off. But in the dark, the brain stays active dreaming and reshaping our experiences. In the dim light of a Chicago laboratory, a young girl was sleeping peacefully. Her name was Ester Kleitman, and although she had no idea, she was about to help her father make one of the…
Sleep doesn’t just store memories, it helps “digest” them. When it’s missing, traumatic images return sharper and the mind stays on edge. Sleep, the nightly journey we undertake without a second thought, is more than just a refuge for a tired body. It functions like a silent architect, building, classifying, and sometimes demolishing our memories….