The restorative effects of sleep on the brain are well known, but what happens at the neural level remains a fascinating mystery. A groundbreaking study led by researchers from Rice University, ...

A sleep doctor breaks down how much deep sleep we need by age, plus the 6 signs you're not getting enough ...

A new study shows that even a moderate dose of caffeine alters brain activity during sleep, increasing complexity and nudging neural systems toward a high-efficiency processing state, especially in ...

New research reveals that neurons in the preoptic hypothalamus—the region of the brain that regulates sleep and body temperature—are rhythmically activated during non-rapid eye movement sleep (NREM).

What happens in the brain and body during NREM and REM sleep As you sleep, your brain cycles through four stages of sleep. The first three are considered non-rapid eye movement (NREM) sleep, also ...

Deep sleep refers to slow-wave sleep — a stage in the sleep cycle when brain waves slow down. Getting enough deep sleep is crucial for numerous bodily functions. But how to increase deep sleep isn’t ...