OPTICAL ILUSSIONS

There are two common optical illusions: physiological illusions and cognitive illusions.

• Physiological illusions include afterimages, which come after looking at a bright light or at something intently for a bit. This is a result of the eye or brain's extended exposure to a stimulus.

• Cognitive illusions are when the brains sees something that is not accurate with the facts of reality, usually when it is trying to fill in a blank in reality.