Nonlinear combination of luminance excursions during flicker, simultaneous contrast, afterimages and binocular fusion

Vision Research
S M Anstis, A Ho

Abstract

The changes in apparent brightness or color, induced into a test spot by a surround, can be greatly enhanced either by flickering the test spot between two luminances, or by binocularly fusing a pair of test spots of different luminances. Simultaneous contrast, in which a white surround makes a grey spot look darker, is greatly enhanced if the spot (not the surround) flickers between black and white. Colour contrast is likewise enhanced by chromatic flicker: on a blue surround, a grey spot looks slightly yellowish, but a yellow/blue flickering spot looks strongly yellow. Temporal successive contrasts, or negative afterimages, are also enhanced by flickering the test field. The negative afterimage of a half-white, half-black rectangle looked dark grey and light grey when projected on a grey test field, but it looked almost black and almost white when projected on a test field that flickered between black and white. Coloured negative afterimages were also enhanced by projecting them on a chromatic flickering test field. We examined the combination rules for pairs of luminances which were presented either successively as flicker or else dichoptically (and fused binocularly). The brightness averaging functions for spatial increment...Continue Reading

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Citations

Nov 15, 2012·Proceedings of the National Academy of Sciences of the United States of America·Hector RieiroStephen L Macknik
Jan 10, 2014·PloS One·Jiawei ZhouRobert F Hess
Jul 26, 2011·Journal of Pharmaceutical and Biomedical Analysis·Lin YangJesper Østergaard
Feb 1, 2012·Vision Research·Daniel H BakerTim S Meese
Dec 6, 2011·Vision Research·Stuart Anstis, Brian Rogers
Apr 4, 2000·Vision Research·S Grossberg, F Kelly
Aug 26, 2000·Vision Research·S M Anstis
May 23, 2009·Vision Research·Monika A Formankiewicz, J D Mollon
May 23, 2017·I-Perception·Stuart Anstis
Jun 18, 2020·I-Perception·Stuart AnstisAlan Ho
Nov 19, 2020·Journal of Vision·Goro Maehara, Ikuya Murakami

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