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

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

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

Scientists have long studied the size of our pupils to understand attention, emotion and even medical conditions. But now, ...

Bringing AI to the eye Measuring how the pupil reacts is the first step ... pathology takes days to complete. Heart monitoring can provide a continuous, real-time measure of internal state ...

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 ...

Nocturnal animals tend to have proportionally bigger eyes than humans do. They also tend to have pupils that open more widely in low light. So, at the outset, nocturnal eyes gather more light than ...