A hormone produced by the brain, orexin, may play a central role in the functioning of the brain's glymphatic system, which clears waste, according to a new study from the University of Oulu.

When Katelynn O’Connell takes her lunch break at work, she follows a routine that sets her apart from other employees. Each day at noon, she unfolds a cot in her small office, turns on a white noise ...

New research has found that people with narcolepsy type 1 exhibit patterns of slow brain pulsations that resemble those seen in healthy sleep. The findings, published in PNAS, suggest that orexin—a ...

Brain clearance involves three types of pulsation: cardiovascular pulsations generated by the heartbeat in the arteries, respiratory pulsations in the veins and cerebrospinal fluid spaces, and slow ...