A recent study in rats suggests that during the rapid eye movement (REM) phase of sleep, the brain uses repeating chains of rapid electrical waves to organize and replay memories in a highly specific ...

Sleep is often described as the body’s recovery period, but for the brain, it is more like a nightly cleaning cycle. During deep rest, cerebrospinal fluid (CSF) circulates through brain tissue, ...

When we focus, switch tasks, or face tough mental challenges, the brain starts to sync its internal rhythms, especially in the midfrontal region. A new study has found that smarter individuals show ...