Observers viewed parallel projections of a five-rung gate rotating in depth about its vertical center rung and judged the direction of apparent rotation. The background of a Ponzo illusion superimposed upon these parallel motion projections affected the direction of apparent rotation, with that end of the gate approaching the apex of the background appearing to recede from the viewer. This result is consistent with the thesis that the static Ponzo illusion is, at least in part, an illusion of depth.
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References
1.
AmesA, 1951“Visual perception and the rotating trapezoidal window”Psychological Monographs65 (7, Whole No.324)
2.
BraunsteinM L, 1971“Perception of rotation in figures with rectangular and trapezoidal features”Journal of Experimental Psychology9125–29
3.
BraunsteinM L, 1972“Perception of rotation in depth: A process model”Journal of Experimental Psychology79510–524
4.
DayR H, 1972“Visual spatial illusions: A general explanation”Science1751335–1340
5.
DayR HPowerR P, 1965“Apparent reversal (oscillation) of rotary motion in depth: An investigation and a general theory”Psychological Review72117–127
6.
DunkerK, 1967“Induced motion” in A Source Book of Gestalt Psychology Ed EllisW D (New York: Humanities Press) pp 161–172
7.
FarnèM, 1970“Induced motion in three dimensions”Perceptual and Motor Skills30426
8.
FarnèM, 1972“Studies on induced motion in the third dimension”Perception1351–357
9.
GibsonJ J, 1950The Perception of the Visual World (Boston: Houghton Mifflin)
10.
GregoryR L, 1966Eye and Brain (New York: McGraw-Hill)
11.
JanssonGBorjessonE, 1969“Perceived direction of rotary motion”Perception and Psychophysics619–26
12.
RockI, 1975An Introduction to Perception (New York: Macmillan)
