A coloured addition by Varin to Kanizsa's triangle figure gives rise to a colour-tinted illusory triangle. Two theories for this effect are described, (i) a cognitive theory based on perceived transparency and (ii) a theory based on an assimilation mechanism. An experiment is reported which uses certain colour combinations incompatible with transparency and other combinations where the two theories predict different illusory colours. The results support the assimilation theory.
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References
1.
BrignerW LGallagherM B, 1974“Subjective contours: Apparent depth or simultaneous brightness contrast?”Perceptual and Motor Skills381047–1053
2.
CorenS, 1972“Subjective contours and apparent depth”Psychological Review79359–367
3.
DayR HJoryM K, 1978“Subjective contours, visual acuity and line contrast”Visual Psychophysics and Physiology Eds ArmingtonJ CKrauskopfJ EWootenB (New York: Academic Press) pp 331–340
KennedyJ M, 1979“Subjective contours, contrast and assimilation” in Perception and Pictorial Representation Eds NodineCFisherD F (New York: Praeger) pp 167–195
10.
VarinD, 1971“Fenomini di contrasto e diffusione chromatica nell' organizzazione spaziale del campo percettivo”Rivista di Psicologia65101–128
