One Study Explores Relationship Between Pupil Size And Attention, Reasoning And Memory Could the size of one’s pupils be an indicator of cognitive ability? A newly-published study in the peer reviewed ...

Pupil size in response to light could serve as a biomarker for concussion, according to a study published in Life. “A concussive injury to the brain is associated with changes in the PLR [pupillary ...

Researchers at MIT and Harvard have identified a striking biological pattern behind the mental fog that follows a sleepless night: the exact moments when a sleep-deprived person loses focus coincide ...

A study published in the Clinical Toxicology examined ocular measures as evidence of cannabis-induced impairment and found that pupil size is not predictive of acute cannabis exposure. The findings ...

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, ...