A new study reveals that pupil size fluctuates constantly during sleep, reflecting changes in brain activation levels.

We move thanks to coordination among many skeletal muscle fibers, all twitching and pulling in sync. While some muscles align ...

Scientists have long studied the size of our pupils to understand attention, emotion and even medical conditions. But now, new research has surprisingly revealed that they change size in sync with our ...

A TEENAGER diagnosed with an aggressive brain tumour and given 12 to 18 months to live spotted the first sign of the deadly disease in her eye. Joscelyne Kerr, 19, was finishing school in 2023 ...

The difference in pupil size between inhalation and exhalation was large enough to theoretically affect vision. The study also showed that the function is intact in people born without the ...

For the first time, researchers have been able to observe how the pupils react during sleep over a period of several hours. A look under the eyelids showed them that more happens in the brain during ...

For the first time, researchers have been able to observe how the pupils react during sleep over a period of several hours. A ...

The difference in pupil size between inhalation and exhalation was large enough to theoretically affect vision. The study also showed that the function is intact in people born without the ...

ETH Zurich researchers found that pupil size changes during sleep, indicating shifts in brain activity. This could help ...

The Education Department is a quarter-trillion-dollar bureaucracy that strangles the states with red tape. The way to fix it is to get government out of the way.