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Going without sleep for too long kills animals but scientists haven’t known why. Newly published work suggests that the answer lies in an unexpected part of the body.
An organized tide of brain waves, blood and spinal fluid pulsing through a sleeping brain may flush away neural toxins that cause Alzheimer’s and other diseases.
While we sleep, one kind of slow brain wave helps to reinforce memories, but a competing wave weakens them.
The identification of SNIPPs, a set of proteins found primarily at the brain’s synapses, brings science closer to understanding why we need to sleep.
The circadian clock is in nearly every cell, and researchers have untangled many of its secrets. But sleep has been harder to pin down.
Powerful new experiments have uncovered some of the molecular underpinnings of sleep.