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

A recent study observed sleeping participants' pupils during sleep, using a new method that could have implications for ...

Scientists have discovered that our pupils continue to change size while we sleep, revealing unexpected fluctuations in brain ...

They also tend to have pupils that open more widely in low light. So, at the outset, nocturnal eyes gather more light than human eyes do. After the light passes through the pupil, it is focused by ...

When evolution skeptics want to attack Darwin's theory, they often point to the human eye ... the separate parts of the eye -- the lens, the retina, the pupil, and so forth -- since none of ...

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

The condition may also be present from birth. Pupils, or the black parts at the center of the eyes, change size to regulate the amount of light entering the eye. Pupils are large in the dark to ...

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

Human eyes are actually spheres. The part that we can see is only just the front. That coloured circle is called the iris and the black spot in the middle is the pupil. This is the part of the eye ...

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 ...