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 ...

A compelling study has found pupils respond in the same way to the number of objects in one’s field of vision as they do to light. Experiments revealed pupils dilate in response to images with larger ...

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 ...

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 ...

ABERDEEN PROVING GROUND, Md. --A team of Army and academic researchers are investigating how eye-pupil size changes can indicate a person’s cognitive state as a means to enable teaming with autonomous ...

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 ...

A study published in the Clinical Toxicology examined ocular measures as evidence of cannabis-induced impairment and found that pupil size is not predictive of acute cannabis exposure. The findings ...

Please provide your email address to receive an email when new articles are posted on . Pupil size reduction remained consistent through day 8. More eyes improved from day 1 to day 8. These results ...

UNDATED (WKRC) - Pupil size is related to intelligence. That's according to a study published in Scientific American, with work conducted at the laboratory at the Georgia Institute of Technology.

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 ...