Researchers at Karolinska Institutet in Sweden have discovered a fundamental mechanism that affects the size of the pupil, namely our breathing.

The autonomic nervous system, which controls involuntary bodily functions, regulates both breathing and pupil response. Abnormalities in this system can signal neurological disorders.

The autonomic nervous system, which controls involuntary bodily functions, regulates both breathing and pupil response. Abnormalities in this system can signal neurological disorders.

We tend to think of the pupil as a simple structure but, in fact, it is constantly in flux.The pupil is regulated by the autonomic nervous system and is constantly responding to the ever-changing ...

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 ...

Tests of pupil function, as an indicator of how well the automatic nervous system is working, may help predict how likely young diabetics are to develop "microvascular disease" -- that is disease ...

A new peer-reviewed study shows that even one occurrence of an abnormal NPi® differential can be an early indicator of neurological injury.

With "true" polycoria, each pupil functions independently, constricting or dilating on its own when reacting to light.