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 ...

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 ...

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 ...

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 ...

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 ...

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.

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 ...

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 ...

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 ...

Uncomplicated in-the-bag IOL implantation does not appear to influence postoperative pupil size and shift, according to a study by researchers in Turkey. Gungor Sobaci, MD, and colleagues investigated ...