A size illusion from simultaneous changes in length and direction of a line pattern.
A circle was attached to one of three lines which were changing in length and direction simultaneously. This configuration of moving lines had been found previously to induce the perception of depth. Of 26 observers 20 reported that the moving circle appeared smaller in size than a physically equal stationary circle which was located outside the changing, depth-inducing configuration.
Brigner
W L
WL
Appalachian State University, USA.
Deni
J R
JR
Hildreth
L L
LL
D003867:Depth Perception; D006801:Humans; D009039:Motion Perception; D009903:Optical Illusions; D012858:Size Perception