New research shows that during moments of lost focus after poor sleep, the brain releases a wave of cerebrospinal fluid (CSF)—the same cleansing process that normally occurs during deep sleep.

As AI—and the ethical debate surrounding it—accelerates, scientists argue that understanding consciousness is now more urgent ...

In the new study, researchers demonstrated that the human brain falls asleep abruptly, rather than gradually, with a "tipping point" marking the transition from wakefulness into sleep. They were then ...