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 ...

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 ...

Movie demonstrating the increase in accommodative eye vergence and pupil constriction when the fixating eye (left side of image, right eye of subject) is exposed to -5D defocus. The occluded eye ...

The association between perceived glossiness and pupillary response has previously been elucidated through a collaborative effort involving the Cognitive Neurotechnology Unit and the Visual Perception ...

Opioids can cause small pupils, but so can several other things. If you’re concerned that someone is misusing opioids, there are other signs to look for. Share on Pinterest Chelsea Victoria/Stocksy ...

New findings suggest that measuring changes in how pupils react to light could help predict recovery from depression and personalize transcranial magnetic stimulation (TMS) treatment of major ...

New pupillometry research reveals how post-traumatic stress disorder (PTSD) may affect both branches of the autonomic nervous system. By measuring how someone's pupils dilate and constrict in response ...

Tsukuba, Japan—Although increased fatigue from physical exercise arises from various exercise-induced factors, it is assumed that the lack of dynamic physical exertion in esports would lead to a ...