Spiral illusion 3

since June 11, 2006


"Hypnotic ray 3"

Blue or green concentric rings appear to be spirals.

Copyright Akiyoshi Kitaoka 2007 (June 26)

The spiral illusion of the Zöllner illusion:

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


"Hypnotic ray 2"

Red or purple concentric rings appear to be spirals.

Copyright Akiyoshi Kitaoka 2007 (June 26)

The spiral illusion of the Zöllner illusion:

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


"Hypnotic ray"

Blue or green concentric rings appear to be spirals.

Copyright Akiyoshi Kitaoka 2007 (June 26)

The spiral illusion of the Zöllner illusion:

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


"Manhole spirals"

Concentric rings appear to be spirals.

Copyright Akiyoshi Kitaoka 2007 (June 25)

Baingio (Pinna) produced similar images before.


"Purple turtle spirals"

Concentric rings appear to be spirals. Moreover, each set of rings appears to rotate.

Copyright Akiyoshi Kitaoka 2007 (June 3)


"Space blizzard"

Concentric circles appear to be a spiral.

Copyright Akiyoshi Kitaoka 2006 (December 29)


"Cloud of sand"

Concentric rings made up of squares appear to intertwine interwining.1)

Copyright Akiyoshi .Kitaoka 2006 (July 1)

1) Intertwining Interwining illusion: Pinna, B. and Gregory, R. L. (2002) Public Perceptions: Shifts of edges and deformations of patterns. Perception, 31, 1503-1508. (Figure 8)

(corrected on September 30, 2016)


"Tiger spiral"

(A remake)

Concentric circles appear to be spirals.

Copyright Akiyoshi Kitaoka 2003
redrawn on July 14, 2006


"Golden turtle spirals"

Concentric rings appear to be spirals. Moreover, each set of rings appears to rotate.

Copyright Akiyoshi Kitaoka 2006 (July 1)


"Packed spirals"

Concentric rings appear to be spirals. Moreover, each set of rings appears to rotate.

Copyright Akiyoshi Kitaoka 2006 (June 13)


"Mizutama spirals"

*Mizutama = drops of water

Concentric gray lines appear to be spirals.

Copyright Akiyoshi Kitaoka 2006 (June 11)


Spiral illusion 2

Spiral illusion 1


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