Popple illusion or phase-shift illusion 錯視のカタログ


Popple, A. V. and Levi, D. M. (2000) A new illusion demonstrates long-range processing. Vision Research, 40, 2545-2549.
Popple, A. V. and Sagi, D. (2000) A Fraser illusion without local cues? Vision Research, 40, 873-878.







All produced by Akiyoshi Kitaoka 2006 (July 12)


補足: 横向きに灰色の雲のようなものが漂って見えるのは、視覚的ファントムと呼ばれる視覚的補完現象である。下記は、ECVP2005のシンポジウム発表の一部で、envelope phantoms(包絡線ファントム)がそれにあたる。

Envelope phantoms

Low-contrast areas given by contrast modulation can form visual phantoms.

Low-contrast areas first gives perceptually transparent layers in front of the carrier. Then, the illusory surfaces are completed over the occluder (= visual phantoms).

Gyoba, J., Sasaki, H., & Sakurai, K. (2000) Visual phantoms can be produced by second-order gratings. Investigative Ophthalmology and Visual Science, 41(4), S228.

Sakurai, K., Kawabata, H., Sasaki, H. and Kitaoka, A. (2000) Effects of occluder luminance on appearance of moving visual phantoms induced by second-order components. Investigative Ophthalmology and Visual Science, 41(4), S228, Abstract 1199.

Low-contrast areas appear to be transparent and to be continual in front of the occluder.

There remains a open question whether the second-order component alone produces phantoms or not.

Envelope phantoms are continual with standard phantoms

Our claim (again): Low-contrast regions give visual phantoms through perceptual transparency.


Kitaoka, A., Gyoba, J. and Sakurai, K. (2006) The visual phantom illusion: a perceptual product of surface completion depending on brightness and contrast. Progress in Brain Research, in press