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 ...

Please provide your email address to receive an email when new articles are posted on . Brimonidine tartrate can successfully reduce halo size and pupil size in patients with night-vision symptoms ...

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 published in PLOS ...

One Study Explores Relationship Between Pupil Size And Attention, Reasoning And Memory Could the size of one’s pupils be an indicator of cognitive ability? A newly-published study in the peer reviewed ...

Researchers at Karolinska Institutet in Sweden have discovered a fundamental mechanism that affects the size of the pupil, namely our breathing. The study, published in The Journal of Physiology, ...

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 ...

Pupils are a rich source of social information. Although changes in pupil size are automatic and uncontrollable, they can convey interest, arousal, helpful or harmful intentions, and a variety of ...

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 ...

Visual illusions of motion are a major source of interest in the vision research community. Explaining how a still image can produce an illusory perception of motion is important for a more complete ...