Working memory plays a pivotal role in our day-to-day functions. It's an essential brain skill that helps us manage and ...

For over a century, scientists believed that light, focus distance, and cognitive effort were the main forces behind changes in pupil size. But a new discovery adds breathing to that list.

Every time you move your eyes or blink, your pupils "reset", leading to small changes in their size over the course of a second or two. In their new paper, Mather and Cavanagh provide compelling ...

The study reveals that our pupils constantly change size while we’re unconscious, indicating different levels of brain activation—the brain’s response to stimuli. With further research ...

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 ...

A person’s pupils may be of different sizes (anisocoria) for several reasons, including physical trauma, response to light, and infection. The condition may also be present from birth.

A stage of sleep – reflected in the size of our pupils – is important to committing recent memories to the brain, which could be manipulated to improve cognitive function and even identify ...

The study, published in the journal Nature on Wednesday, says that pupil size is key to understanding how, and when, the brain forms strong, long-lasting memories. Researchers at Cornell ...

ITHACA, N.Y. – 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 ...

Interestingly, one outward sign of arousal in the brain is pupil size. Scientists have long known that pupil size can reflect brain arousal levels, but Meissner et al. (2024) took this further by ...

Primary schools in England where pupil numbers have fallen sharply are not reducing class sizes, a report has suggested. Schools are prioritising cutting the number of classes instead as they may ...