Stimulus size dependence of hue changes induced by chromatic surrounds

Kellner, Christian J. and Wachtler, Thomas (2016): Stimulus size dependence of hue changes induced by chromatic surrounds. In: Journal of the Optical Society of America A-Optics Image Science and Vision, Vol. 33, No. 3: A267-A272

Abstract

A chromatic surround induces a change in the perceived hue of a stimulus. This shift in hue depends on the chromatic difference between the stimulus and the surround. We investigated how chromatic induction varies with stimulus size and whether the size dependence depends on the surround hue. Subjects performed asymmetric matching of color stimuli with different sizes in surrounds of different chromaticities. Generally, induced hue shifts decreased with increasing stimulus size. This decrease was quantitatively different for different surround hues. However, when size effects were normalized to an overall induction strength, the chromatic specificity was largely reduced. The separability of inducer chromaticity and stimulus size suggests that these effects are mediated by different neural mechanisms. (C) 2016 Optical Society of America

• Item Type: Journal article
• Faculties: Biology > Department Biology II > Neurobiology
• Subjects: 500 Science > 570 Life sciences; biology
• ISSN: 1084-7529
• Language: English