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 ...

Cognition How Changes in Pupil Size Produce a Visual Illusion The peripheral drift illusion is determined by pupil size changes. Posted March 28, 2025 | Reviewed by Monica Vilhauer Ph.D.

Iris brightness and pupil size affect people's perceptions, according to a new study. elnariz - stock.adobe.com Feast your eyes on the iris. Sure, being blessed with a choice eye color is cool.

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 ...

The iris is a structure behind the transparent cornea of the eye. It has a circular opening called the pupil that changes size in response to the light level. Your pupils are usually the same size ...

When the orexin neurons in the brain are stimulated, pupils expand, new research in mice shows. Orexin is central to the regulation of pupil size. When the orexin system is switched off, the ...

Both the last programme for government and the current one included commitments to reducing the primary school pupil-teacher ...

The researchers are now investigating whether changes in pupil size during breathing also affect vision. Previous research shows that smaller pupils make it easier to see details, while larger ...

Cornell University researchers have found the pupil is key to understanding how, and when, the brain forms strong, long-lasting memories. By studying mice equipped with brain electrodes and tiny ...