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Updated: Aug 24, 2026

Visualizing Visual Adaptation
Published on: April 24, 2017
The peculiar nature of simultaneous colour contrast in uniform surrounds
Vebjørn Ekroll1, Franz Faul, Reinhard Niederée
1Institut für Psychologie, Christian-Albrechts-Universität zu Kiel, Olshausenstr. 62, 24118 Kiel, Germany. vekroll@psychologie.uni-kiel.de
Abstract:
We present evidence from asymmetric colour matching experiments which strongly suggests that uniform surrounds evoke induction effects of a very peculiar nature, not representative of colour induction effects in variegated surrounds. Given the widespread use of uniform surrounds in studies of colour vision, this finding is of interest in relation to a number of current research issues, such as contrast coding of colour, functionally equivalent surrounds and colour constancy. A framework that systematises the seemingly complex colour appearance changes induced by uniform surrounds is presented and its implications are discussed.
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