The latest works

"A chameleon"

The "eyes" of a chameleon appear to rotate.

Copyright A.Kitaoka 2004 (March 23)

"Into the space"

The surround appears to rotate clockwise.

Copyright A.Kitaoka 2004 (March 19)

BMP file for your wallpaper

"Rotating spiral snakes"

Snakes appear to rotate (peripheral drift illusion*1). Gray concentric circles appear to be a spiral (spiral illusion*2).

Copyright A.Kitaoka 2004 (March 9, 2004)

*1 e.g. Kitaoka, A. and Ashida, H. (2003) Phenomenal characteristics of the peripheral drift illusion. VISION, 15, 261-262.

*2 e.g. Kitaoka, A., Pinna, B., and Brelstaff, G. (2001). New variations of spiral illusions. Perception, 30, 637-646.

"Rotating snakes 3"

Rings of snakes appear to rotate.

Copyright A.Kitaoka 2004 (February 25, 2004)

"Throwing cast nets"

Circles appear to expand.

Copyright A.Kitaoka 2004 (February 12, 2004)

castnets.cdr (CorelDRAW)


*"Donguri" means acorns, "ko" means a container, and "domburakokko" means the sound of floats on a flow of water.

Rows appear to move leftward or rightward.

Copyright A.Kitaoka 2004 (January 23, 2004)


*"Donguri" means acorns and "girarin" means scintillation

Rings appear to rotate as well as the figure scintillates.

Copyright A.Kitaoka 2004 (January 22, 2004)

"Packed cans"

The upper and lower rows appear to move leftward while the middle row appears to slide rightward.

Copyright A.Kitaoka 2004 (January 6, 2004)

"Spreading maccha"*

*"maccha" means kind of Japanese green tea

Each of four pieces of green mist appears to expand.

Copyright A.Kitaoka 2003 (December 18, 2003)


Flowers appear to expand.

Copyright A.Kitaoka 2003 (December 15, 2003)

"Hearts and tears"

Hearts appear to ascend while tears appear to descend.

Copyright A.Kitaoka 2003 (November 8, 2003)

Caution: The figure shown below might feel you sick ! Do not make a link to this image.


"Spirals of fluorescent color"

Red appears to be fluorescent color and scintillate. Moreover, red appears to be pink or orange in the center.

Copyright A.Kitaoka 2003 (October 17, 2003)


"Rotating snakes"

Circular snakes appear to rotate 'spontaneously'.

Copyright A.Kitaoka 2003 (September 2, 2003)

Explanation (PDF file)

"Radioactive rainbow"

Radial but slightly curved, illusory rainbow appears to scintillate.

(Colored dots in the middle of black stripes are not error of GIF files)

Copyright A.Kitaoka 2003 (August 9, 2003)

Before July 2003

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