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.

The award in Physiology or Medicine goes to chronobiologists Jeffrey Hall, Michael Rosbash, and Michael Young.