Spiral illusion 2

since June 3, 2005


"Orochi spirals"

Concentric disks appear to form spirals.

Copyright Akiyoshi .Kitaoka 2006 (April 28)


"White and blue paramecia"

Concentric arrays of dots appear to form spirals, which shift toward the center by rotating clockwise.

Copyright Akiyoshi .Kitaoka 2005 (December 28)


"Fever spirals"

Concentric rows appear to be spirals.

Copyright Akiyoshi .Kitaoka 2005 (December 28)


"Air mail spirals"

Concentric rows appear to be spirals.

Copyright Akiyoshi .Kitaoka 2000 (February 4)
reproduced on November 2, 2005


"Typhoons come to Japan"

A typhoon (mpeg-1) (from KITAMOTO Asanobu Laboratory in NII)

Concentric circles in each disk appear to form spirals. Moreover, the disks appear to rotate. Furthermore, the disks appear to rotate quickly if you keep blinking.

Copyright Akiyoshi .Kitaoka 2005 (October 10)


"Spiky candies"

Concentric circles in each disk appear to form spirals. Moreover, the disks appear to rotate.

Copyright Akiyoshi .Kitaoka 2005 (September 21)


"A pack of typhoons"

Concentric circles in each disk appear to form spirals. Moreover, the disks appear to rotate.

Copyright Akiyoshi .Kitaoka 2005 (September 20)


"Typhoon twins"

Concentric circles in each disk appear to form spirals. Moreover, the inner part of each disk appears to rotate.

Copyright Akiyoshi .Kitaoka 2005 (September 20)


"Typhoon family"

Concentric circles in each disk appear to form spirals. Moreover, the disks appear to rotate.

Copyright Akiyoshi .Kitaoka 2005 (September 20)


"Old tires"

Concentric circles in each tire appear to form spirals. Moreover, the tires appear to rotate.

Copyright Akiyoshi .Kitaoka 2005 (September 20)


"Peropero-candy"*

*kind of candy

Concentric red streaks of neon color spreading sometimes appear to form spirals.

Copyright Akiyoshi .Kitaoka 2005 (June 3)

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


Spiral illusion I


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