PMID: 11934160Apr 6, 2002Paper

Role of synchrony in contour binding: some transient doubts sustained

Journal of the Optical Society of America. A, Optics, Image Science, and Vision
S C Dakin, P J Bex

Abstract

The temporal correlation hypothesis proposes that neurons signal mutual inclusion in complex features, such as extended contours, by phase-locking their firing [C. M. Gray and W. Singer, Proc. Nat]. Acad. Sci. USA 86, 1698 (1989)]. Although this hypothesis remains controversial, a number of recent psychophysical studies have suggested that temporal correlation among features can indeed promote perceptual grouping. In particular, subjects are better at detecting extended visual contours embedded within a field of distractor elements when a small delay is present between a cycling presentation of the contour and the background [Nature 394, 179 (1988)]. We have replicated this finding and examined three potentially confounding factors. First, we controlled local density and used more curved contours composed of bandpass elements to confirm that the effect was associated with contour integration and not with the operation of coarse-scale spatial filters. Second, we minimized the effects of saccadic eye movements (which could combine with the flicker of the asynchronous display to introduce motion cues at the contour location) both by using a fixation marker that was visible only when observers made a saccade (allowing them to rejec...Continue Reading

References

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Citations

Jan 7, 2009·Proceedings of the National Academy of Sciences of the United States of America·Frank BauerMarius Usher
Nov 21, 2007·Perception & Psychophysics·Patricia M KielyDavid P Crewther
Feb 10, 2004·Journal of Physiology, Paris·R F HessD J Field
Jan 22, 2008·Cognition·Alex O Holcombe, Patrick Cavanagh
Aug 19, 2007·Brain Research Reviews·Walter J Jermakowicz, Vivien A Casagrande
Jul 12, 2003·Vision Research·Peter J BexSteven C Dakin
Mar 8, 2011·Vision Research·David P McGovernJonathan W Peirce
Jul 17, 2007·Vision Research·Julian M Wallace, Nicholas E Scott-Samuel
Jun 15, 2010·Vision Research·Samuel CheadleHermann J Müller
Jan 24, 2002·Vision Research·William H A Beaudot
Jul 1, 2008·Otolaryngology--head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery·Paul WalkerTanya Gulliver
Feb 6, 2018·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Jing BaiQing-Chao Shang

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