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

Our eyes offer clues about our mental health. Changes in pupil size may signal stress or neurological issues. Mehezabin Dordi ...

Diagnosing neurobiological disorders, such as the autism spectrum disorders, focuses on complex clinical evaluations. But a study published last week (March 6) in eLife shows that an objective measure ...

Changes in the characteristics of your pupils (the shape, size, and reactivity of the pupils) can provide clues about your ...