The cumulative effect of repeated sleep deprivation can lead to more permanent changes in eye area structure. Over time, consistently tired individuals may notice that their eye puffiness becomes ...

Sleep deprivation not only affects how you feel the next day, ... But missing out on the recommended 7 to 9 hours of shut-eye nightly does more than make you feel groggy and grumpy.

A newly identified brain circuit in mice may explain why we sleep longer and deeper after being sleep deprived – and lead to ...

We know that sleep is an essential pillar of our mental and physical health – but what happens if we miss a night?

Uncontrollable eye movements, ... Can memory loss from sleep deprivation be reversed? It's difficult to recover all memory if you’re sleep deprived for even a couple of days.

Sleeping deeply into the afternoon after an all-nighter or a late night out is one way the body repays its sleep debt. The ...

How do animals bounce back from sleep deprivation? Scientists found a subset of neurons in the mouse thalamus that repay this ...

We all miss out on sleep now and then, but if you’re consistently losing out on shut-eye, it could lead to a health problem called sleep deprivation. Sleep deprivation means you’re not getting ...

Rapid eye movement, or REM, sleep was discovered in 1953—more than 15 years after stages 1 through 4 had been mapped—by Eugene Aserinsky and Nathaniel Kleitman at the University of Chicago.