During REM sleep, your heart rate increases, your blood pressure elevates, and your eyes move. REM sleep may also be the time when your brain processes emotions and solidifies memories.

Sometimes, during light sleep or REM sleep in dogs, the nictitating membrane can be visible, further contributing to the ...

When you’re in a period of REM sleep, your eyes will rapidly move from side to ... noise by closing any windows that may ...

Rapid-eye-movement (REM) sleep is associated with more sympathetic activation than is NONREM sleep 1,2. So far, there are no data regarding vascular tone during REM and NONREM sleep in humans.

Waking up after eight hours of sleep should feel refreshing. Yet, many people open their eyes feeling just as exhausted as ...

The goal was to learn what happens in the brain during non-REM (non-rapid eye movement) sleep, a stage known for ... hopes the findings will open new doors. “We are proposing that the brain ...

Not spending enough time in the two deep stages of sleep — slow-wave and rapid eye movement, or REM, sleep — may hasten the deterioration of parts of the brain associated with Alzheimer’s ...