Neurons can only efficiently fix genetic injuries when the animals are asleep.

Some individuals sleep just minutes a day. And keeping flies awake does not have untoward effects on longevity.

When people prefer to go to bed is linked to hundreds of variations in their genes.

Sleeping on a rhythmically swaying surface helps synchronize sleep oscillations in the human brain, a study finds.

People who have suffered traumatic brain injury had slower reaction times and more false starts after disrupted sleep than well-rested controls, according to a study presented at the Society for Neuroscience meeting.

A protein in skeletal muscles helps mice recover from sleep deprivation.

Two studies identify a signaling pathway that contributes to the fish’s sleeplessness.

Pupil constriction during sleep may protect the murine brain from being awakened by sudden flashes of light.

Brain-derived neurotrophic factor affects onset and duration of REM in the animals, but not other phases of sleep.