The pupil as a window into the sleeping brain Date: March 5, 2025 Source: ETH Zurich Summary: For the first time, researchers have been able to observe how the pupils react during sleep over a ...

The longer you go without sleep, the more your body and brain start to struggle. Your reactions slow down, emotional ...

Many of us experience a rough night’s sleep from time to time, in fact research shows about a third of us report not getting enough sleep, leading to sleep deprivation. Naturally, people turn to ...

Matthew Impelli is a Newsweek staff writer based in New York. His focus is reporting social issues and crime. In January 2023, Matthew traveled to Moscow, Idaho where he reported on the quadruple ...

Ever open your eyes throughout the night to check the time? "The clock at night is like the enemy of sleep," said Dr. Naomi Kramer, a sleep expert in the Division of Pulmonology and Sleep Medicine ...

Although high-quality sleep has long been linked to better athletic performance, that can be more of an ideal than a reality for many runners. You can still struggle with adequate sleep even when ...

Researchers were able observe eye movements during sleep over a course of several hours for the first time. Pupil size also fluctuates constantly during sleep, and is linked to the level of brain ...