The Filling-In Illusion and Moving Visual Phantoms

1982 ◽  
Vol 54 (2) ◽  
pp. 343-355 ◽  
Author(s):  
Alex Fraser ◽  
Kimerly Wilcox ◽  
Stephanie Storgion
Keyword(s):  
Visual Illusion ◽  
Retinal Location ◽  
Common Mechanism ◽  
Illusory Effect ◽  
Static Test ◽  
Black And White ◽  
Light Levels ◽  
Completion Effect ◽  
Contour Completion

A new visual illusion, filling-in illusion, is reported and compared to the moving visual phantoms of Tynan and Sekuler (1975). 169 unrelated, unpaid, volunteer subjects were recruited from students and faculty and classified as filling-in positive—able to perceive the illusion, or filling-in negative—unable to perceive it. Other investigations examined the effects of light levels, moving vs static test figures, and black-and-white vs shaded figures. A polaroid study suggests a central rather than retinal location of the illusory effect. Filling-in is a contour completion effect, as are moving visual phantoms. Although a number of differences between the two phenomena exist, it is suggested that they may be due to different aspects of a common mechanism.

A Halo Visual Illusion

Perception ◽  
1977 ◽  
Vol 6 (2) ◽  
pp. 227-230
Author(s):  
David C Rubin ◽  
Daniel J Rebson
Keyword(s):  
Visual Angle ◽  
Visual Illusion ◽  
Visual Fields ◽  
Intermittent Stimulation ◽  
Black And White ◽  
Rotating Discs ◽  
Stimulation Of

A visual illusion consisting of transparent halos extending beyond the boundaries of rotating discs is reported. The effect can be obtained by rotating a variety of black-and-white discs at moderate speeds. It is not due solely to rods, as opposed to cones, and does not appear to be explainable in terms of intermittent stimulation of portions of visual fields of fixed visual angle.

The Enigmatic Enigma Illusion

2017 ◽  
Author(s):  
Kai Hamburger
Keyword(s):  
Motion Perception ◽  
Traveling Wave ◽  
Visual Illusion ◽  
Human Motion ◽  
White Background ◽  
Illusory Effect ◽  
Illusory Motion ◽  
Central Disk ◽  
Important Means ◽  
Streaming Motion

As a visual illusion, the Enigma illusion is a pattern that in its original version consists of 120 black radial lines on a white background intercepted by three bicolored annuli and a central disk. The main illusory effect in the Enigma (leading to its name) occurs during fixation of the center of the static image. Then, quite intense streaming motion may be perceived on the different annuli. It is characterized by a traveling wave or some subtle motion on the annuli that may not be described in more detail by the observer. Sometimes the observers call it “a feeling of motion”. This perceived (illusory) motion can occur in either direction; clockwise or counterclockwise. This example shows that such illusions are an important means to psychophysically investigate human motion perception and its limits.

Moving visual phantoms: a new contour completion effect

Science ◽  
1975 ◽  
Vol 188 (4191) ◽  
pp. 951-952 ◽  
Author(s):  
P Tynan ◽  
R Sekular
Keyword(s):  
Completion Effect ◽  
Contour Completion
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