Zigzag Way Illusion (Anh Pham edition)

In this illusion, there are two motions:
1. the blue rectangle moves in straight way
2. the background with black and white color rotates in one direction


if you look directly at the blue rectangle, you will persive it move straight and does not change its color. When you look at the red square, you will persive it moves in a zigzag way (the direction of the rectangle depends on the current rotation angle of the background) and its color changed brighter when moving in black areas and darker when moving in grey areas.


The motion of the rectangle and the background create two sources of imformation.
when we look at the display foveally, we can discern multiple features simultaneously but its quite different when we look at the display peripherally. It is hard for our visual system to analyse sources of imformation exactly.
The motion of the background is global motion and the motion of the blue rectangle is internal motion. It could be the global motion affects to the internal motion because the global motion has a stronger affection than the internal motion to the peripheral visual system.

Color Image Aftereffect

Motion aftereffect-color particles

Rail Speed Illusion

This illusion have been killing many people every year when crossing rail-way because it appear the bigger objects move slower then smaller objects.

Rotation with peripheral visual system

Breathing Windows

Rotating illusion

Reversing Flower

Anh Pham Optical Illusion 2010

Rolling Candle

The stick is not rolling but you perceive it rolls. Anh Pham Optical Illusion 2010.

Pedal way

If you stare at the square then the circle will move like pedals (rolling itslef and around center). Anh Pham Optical Illusion 2010

Curved Square

When the circle appears, then you perceive the square's side are curved ha ha, check it out!

Color afterimage

Stare at the pink square at least 5 seconds, the area that it covers change to light green and to red square is blue. Anh Pham optical illusion 2010.

Moving Squares Illusion

In this illusion only the background is changed but it appears the square is changing too.

Magic Eyes

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Only the yellow circle moves, but it appear the eyes look at different directions. Anh Pham Optical Illusion 2010.