The human eye can see a lot, but according to scientists our eyes are missing out on some really cool details - like how a person's skin color flickers slightly with each heart beat.

Encoded with permission for digital streaming by Infobase on May 25, 2014. Learn360 is distributed by Infobase for Films for the Humanities & Sciences, Cambridge Educational, Meridian Education, and Shopware.

Hidden Motion In Everyday Life (2:00).