Scientists are providing a fuller understanding of the essential role that sleep plays in brain health, identifying an abrupt transition at about 2.4 years of age when its primary purpose shifts from ...

REM sleep is a stage of sleep when your heart rate increases, your blood pressure elevates, and your brain processes emotions ...

Researchers at USC have created the first method to noninvasively measure microscopic blood vessel pulses in the human brain.

Scientists have found that oceanic manta rays routinely make extreme dives of more than 1,200 meters – three-quarters of a ...

The burden of cognitive decline is growing, affecting many people worldwide and placing a substantial strain on health-care ...