When the dark circle in the center of your eye is larger than normal Dilated pupils (mydriasis) can happen for many reasons, such as a normal response to light, medication or drug use, eye exams ...

Summary: Researchers have discovered that pupil size during non-REM sleep correlates with memory consolidation. When pupils ...

is a condition in which the pupil in one of your eyes spontaneously dilates. It can stay dilated for just a few minutes or can go for days before returning to its normal size, Mackay says.

REM sleep may help the brain manage memory replay and consolidation. Cornell University researchers found that contracted pupils are linked to replaying recent memories, while dilated pupils are ...

New Delhi, Pupil size during sleep whether contracted or dilated could be key to understanding how the brain forms long-lasting memories, according to a study in mice, findings from which could ...