NextSense earbuds monitor brain activity using EEG. The sleep earbuds claim to use EEG for restorative sleep. They cost $399 and are available to preorder. Brain-tracking technology is coming to your ...

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 ...

One key role of sleep involves cerebrospinal fluid, which surrounds and protects the brain. During sleep, CSF helps remove waste that accumulates during waking hours. In a 2019 study, Lewis and her ...

A landmark randomized crossover study in humans by researchers at Applied Cognition links sleep-related glymphatic activity to blood biomarker shifts for amyloid beta and tau.

We all know the feeling, but now we know, what actually happens to us.