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 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 ...

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 ...

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

AI may be able to predict a person’s risk of developing over a hundred serious medical conditions from data collected over ...