You have probably heard the saying that the eyes are the windows to the soul, but now it turns out that they are also connected to how we breathe. Scientists have long studied the size of our pupils ...

The pupillary light response helps our eyes see the world around us in various lighting conditions ranging from bright, sunny days to dark, moonlit nights. Like a camera's aperture, this adaptive ...

When people are awake, their pupils regularly change in size. Those changes are meaningful, reflecting shifting attention or vigilance, for example. Now, researchers have found in studies of mice that ...

Arousal is a fundamental part of how our brain keeps us alert, engaged, and responsive to the world around us. It is controlled by networks deep in the brainstem, like the locus coeruleus (LC), which ...

The way the brain regulates pupil size is different from previously thought: fundamentally responsible is the neurotransmitter orexin, as researchers at ETH Zurich have now shown. This discovery could ...

Scientists have discovered a link between pupil size during non-REM sleep and the processing of new and old memories. Understanding how pupil size relates to memory could have significant implications ...

The precision with which people make decisions can be predicted by measuring pupil size before they are presented with any information about the decision, according to a new study. The precision with ...

Our eyes offer clues about our mental health. Changes in pupil size may signal stress or neurological issues. Mehezabin Dordi from Sir HN Reliance Foundation Hospital highlights this connection.

To evaluate the effect of pupil size on higher-order aberrations (HOAs) in high-myopic pseudophakic eyes with posterior staphyloma using KR-1W aberrometer. Nowadays, cataract surgery has changed from ...

Add Yahoo as a preferred source to see more of our stories on Google. You have probably heard the saying that the eyes are the windows to the soul, but now it turns out that they are also connected to ...

When people are awake, their pupils regularly change in size. Those changes are meaningful, reflecting shifting attention or vigilance, for example. Now, researchers reporting in Current Biology on ...