Determinants of asynchronous processing in vision

Proceedings. Biological Sciences
Derek H Arnold, Colin W G Clifford

Abstract

When a stimulus oscillates in both colour and direction of motion, changes in colour must lag behind those in direction if they are to be seen as concurrent. It has been argued that this lag is the consequence of asynchronous visual processing, with colour being processed more rapidly than motion. This proposal is contentious: it has been criticized on the basis that the time-course of cortical activity may not correlate directly with that of perceptual experience. Here, we demonstrate that the extent of the apparent asynchrony can vary according to the prevailing stimulus conditions. The apparent asynchrony is greatest if the stimulus is composed of opponent directions of motion and is reduced if the angular difference between the directions is reduced. This pattern of results suggests that asynchronous neural activity arises, in part, as a consequence of differential levels of inhibition within relatively independent cortical structures.

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Citations

May 22, 2003·Trends in Cognitive Sciences·S Zeki
Jul 12, 2007·Proceedings. Biological Sciences·Derek H Arnold, Paul Wilcock
Sep 10, 2010·Proceedings. Biological Sciences·Derek H Arnold, Kielan Yarrow
Sep 9, 2005·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Semir Zeki
Aug 1, 2014·Journal of Computational Neuroscience·Andrea PavanGeorge Mather
Oct 5, 2014·Attention, Perception & Psychophysics·Eriko Self
Apr 5, 2014·Vision Research·Derek H ArnoldDavid Whitney
Apr 18, 2015·Frontiers in Integrative Neuroscience·Semir Zeki
Apr 1, 2015·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Semir Zeki
Aug 17, 2005·Vision Research·Derek H Arnold
Sep 16, 2003·Vision Research·Harold E BedellSaumil S Patel
May 6, 2004·Vision Research·Christelle Aymoz, Paolo Viviani
Jan 3, 2006·Vision Research·A Bartels, S Zeki
Sep 24, 2004·Vision Research·Farshad Moradi, Shinsuke Shimojo
Oct 12, 2004·Vision Research·Colin W G CliffordJoel Pearson
Mar 14, 2014·Frontiers in Human Neuroscience·Yu Tung Lo, Semir Zeki
Jan 3, 2006·Vision Research·Kairi KreegipuuJüri Allik
Jan 2, 2008·Progress in Brain Research·Semir Zeki
Jun 22, 2011·Psychological Science·Warrick Roseboom, Derek H Arnold
Apr 20, 2018·Physiological Measurement·Erik Reinertsen, Gari D Clifford
Sep 11, 2018·Physiological Measurement·Adriana N VestGari D Clifford
Jul 30, 2020·The European Journal of Neuroscience·Semir Zeki
Dec 13, 2017·Perception·Ryan T MaloneyIsabelle Mareschal
Oct 3, 2020·Vision Research·Inci AyhanLucas Thorpe

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