February 6, 2013

NEI: Gaining Perspective on How We See in 3-D

This National Eye Institute video demonstrates one of the visual stimuli used in experiments. The moving dots give a powerful sensation of a 3-D cylinder, but you might see it in one of two different ways: with the front surface moving to the left or to the right. Researchers are studying which signals determine the brain state that causes you to see the cylinder move in one direction or the other.