Subtle pupil dilation and changes in expression have been found to be a new way for medical professionals to detect tinnitus.

Changes in pupil size, shape, and reactivity can sometimes signal underlying mental health conditions, stress, or even neurological disorders. While we are all aware that pupils enlarge when we ...

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. Researchers ...

In their new paper, Mather and Cavanagh provide compelling evidence that these transient changes in pupil size are the underlying cause of the peripheral drift illusion. To test this, four ...

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.