Medically reviewed by Diana Apetauerova, MD Pupils, the dark circles in your eyes, are usually equal in size. Unequal pupils (anisocoria) may be a sign of a medical issue. Certain medications placed ...

A downward trend on the vertical axis signifies pupil constriction, indicating a reduction in pupil size over time. When observing an image rated as possessing low glossiness (top right ...

Pupil contraction during non-REM sleep consolidates new memories Pupil dilation helps integrate older memories without interference Insights can improve memory research and artificial intelligence ...

The science of pupillometry takes a common intuition — that you can tell a lot about someone when you look them in the eye — and makes it concrete, measurable, and extraordinarily useful.

Pupils size during the sleep can tell the memories you are experiencing. A new study has investigated the link between pupil dilation/contraction and memory processing during sleep. The study ...

Attitude and Pupil Size Dilation and constriction of the pupils reflect not only changes in light intensity but also ongoing mental activity. The response is a measure of interest, emotion ...