Visual illusions of motion are a ... 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 ...

A groundbreaking study has revealed that our pupils change size in sync with our breathing—a response now dubbed the "pupillary respiratory phase response." ...

Scientists at the Karolinska Institute in Sweden and the University of Groningen in the Netherlands have confirmed that pupil ...