Spatial selectivity of the watercolor effect

Frédéric Devinck; Peggy Gerardin; Michel Dojat; Kenneth Knoblauch

doi:10.1364/JOSAA.31.0000A1

Spatial selectivity of the watercolor effect

Frédéric Devinck ^{1, *} Peggy Gerardin ² Michel Dojat ³ Kenneth Knoblauch ^{2, *}

* Auteur correspondant

1 UR2 - Université de Rennes 2

2 Inserm U846, SBRI, Dept Integrative Neurosciences

SBRI - Institut cellule souche et cerveau / Stem Cell and Brain Research Institute

3 GIN - Grenoble Institut des Neurosciences

Abstract : The spatial selectivity of the watercolor effect (WCE) was assessed by measuring its strength as a function of the luminance contrast of its inducing contours for different spatial configurations, using a maximum likelihood scaling procedure. The approach has previously been demonstrated to provide an efficient method for investigating the WCE as well as other perceptual dimensions. We show that the strength is narrowly tuned to the width of the contour, that it is optimal when its pair of inducing contours are of equal width, and that the strength can be increased by varying the overall size of the stimulus when the width of the inducing contour is not optimal. The results support a neural substrate that has characteristics not unlike double-opponent, color-luminance cells observed in cortical area V1.

Keywords : (3305510) Psychophysics OCIS codes: (3300330) Vision color and visual optics (3301720) Color vision (3305020) Perception psy-chology (3307310)

Type de document :

Article dans une revue

Journal of the Optical Society of America. A Optics, Image Science, and Vision, Optical Society of America, 2013, pp.A1-A6. 〈10.1364/JOSAA.31.0000A1〉

Domaine :

Sciences du Vivant [q-bio] / Ingénierie biomédicale

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http://www.hal.inserm.fr/inserm-01166904
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