Rotation of a Kanizsa triangle in depth around its vertical axis causes a perception of a three-dimensional object with a flat, rigid illusory triangle between the inducing discs. When the inducing discs of a Kanizsa triangle were made thicker, the illusory triangle between the discs also became thicker. In the experiments both computer animation and real inducers made of plastic were used. The method promoted border perception in a three-dimensional illusory figure. We suggest that the perception of three-dimensional illusory objects is due to a process which is also used in the perception of real three-dimensional objects.
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References
1.
CarmanG JWelchL, 1992“3-dimensional illusory contours and surfaces”Nature (London)360585–587.
2.
GillamB, 1987“Perceptual grouping and subjective contours”, in The Perception of Illusory Contours Eds PetrySMeyerG E, (New York: Springer) pp 268–273.
GregoryR L, 1987“Illusory contours and occluding surfaces”, in The Perception of Illusory Contours Eds PetrySMeyerG E, (New York: Springer) pp 81–89.
5.
GregoryR LHarrisJ P, 1974“Illusory contours and stereo depth”Perception & Psychophysics15411–416.
6.
KanizsaG, 1955/1987“Quasi-perceptual margins in homogeneously stimulated fields”, in The Perception of Illusory Contours Eds PetrySMeyerG E, (New York: Springer) pp 40–49.
KellmanP HLoukidesM G, 1987“An object perception approach to static and kinetic subjective contours”, in The Perception of Illusory Contours Eds PetrySMeyerG E, (New York: Springer) pp 151–164.
9.
KennedyJ M, 1987“Lo, perception abhors not a contradiction”, in The Perception of Illusory Contours Eds PetrySMeyerG E, (New York: Springer) pp 253–261.
10.
KleffnerD ARamachandranV S, 1992“On the perception of shape from shading”Perception & Psychophysics5218–36.
MeyerG EPetryS, 1987“Top-down and bottom-up: The illusory contour as a microcosm of issues in perception”, in The Perception of Illusory Contours Eds PetrySMeyerG E, (New York: Springer) p 7.
13.
NakayamaKShimojoS, 1992“Experiencing and perceiving visual surfaces”Science2571357–1363.
14.
NakayamaKShimojoSRamachandranV, 1990“Transparency: Relation to depth, subjective contours, luminance, and neon color spreading”Perception19497–513.
15.
ParksT ERockI, 1990“Illusory contours from pictorially three-dimensional inducing elements”Perception19119–121.
16.
PetrySMeyerG, (Eds), 1987The Perception of Illusory Contours (New York: Springer).
17.
RamachandranV S, 1987“Visual perception of surfaces: A biological theory”, in The Perception of Illusory Contours Eds PetrySMeyerG E, (New York: Springer) pp 93–108.
18.
RamachandranV S, 1988“Perception of shape from shading”Nature (London)331163–166.
19.
RockI, 1987“A problem-solving approach to illusory contours”, in The Perception of Illusory Contours Eds PetrySMeyerG E, (New York: Springer) pp 63–70.
20.
SchumannF, 1900/1987“Contributions to the analysis of visual perception—first paper: Some observations on the combination of visual impressions into units”, in The Perception of Illusory Contours Eds PetrySMeyerG E, (New York: Springer) pp 21–34.
21.
VallortigaraG, 1987“The hidden face of Kanizsa's triangle: Apparent movement of subjective figures in three-dimensional space”Perception16449–452.
22.
WatanabeTSatoT, 1989“Effects of luminance contrast on color spreading and illusory contour in the neon color spreading effect”Perception & Psychophysics45427–430.
