An optical illusion called 'reverse-phi motion' helps explain how we view moving objects
Monday, September 12, 2011 - 17:00
in Biology & Nature
(PhysOrg.com) -- Flies like watching computer screens as much as the next animal. Set them on a trackball in front of a monitor, and they'll follow the action if the images in front of them move in one direction, the flies will try to move the same way.