Contour interaction under photopic and scotopic conditions

Journal of Vision
Lenka MusilováJohn Siderov

Abstract

In the present study, we asked whether contour interaction undergoes significant changes for different luminance levels in the central and peripheral visual field. This study included nine normal observers at two laboratories (five at Palacky University Olomouc, Czech Republic and four at the University of Houston, USA). Observers viewed a randomly selected Sloan letter surrounded by four equally spaced bars for several separations measured edge-to-edge in min arc. Stimuli were viewed foveally under photopic and mesopic luminances and between 5° and 12° peripherally for four different background luminances of the display monitors, corresponding to photopic, mesopic, scotopic, and dim scotopic levels. The extent of the contour interaction in the fovea is approximately 20 times smaller than in the periphery. Whereas the magnitude of foveal contour interaction markedly decreases with decreasing luminance, no consistent luminance-induced change occurs in peripheral contour interaction. The extent of contour interaction does not scale with the size of the target letter, either in the fovea or peripherally. The results support a neural origin of contour interaction consistent with the properties of center-surround antagonism.

References

Jan 18, 1977·Experimental Brain Research·V VirsuO D Creutzfeldt
Jul 22, 1990·The Journal of Comparative Neurology·K C WiklerP Rakic
Nov 1, 1966·Journal of Neurophysiology·T N Wiesel, D H Hubel
Jan 1, 1972·Journal of Neurophysiology·L Maffei, A Fiorentini
Sep 1, 1968·The Journal of Physiology·B G Cleland, C Enroth-cugell
Sep 1, 1965·Journal of Neurophysiology·R W Rodieck, J Stone
Nov 1, 1984·Perception & Psychophysics·G Wolford, L Chambers
May 23, 2000·Vision Research·R F HessN Kapoor
May 23, 2001·Vision Research·S T ChungG E Legge
Jun 5, 2002·Vision Research·Dennis M LeviStanley A Klein
Sep 28, 2002·Vision Research·Srimant P Tripathy, Patrick Cavanagh
Aug 6, 1957·The Journal of Physiology·H B BARLOWS W KUFFLER
Sep 1, 1963·Journal of the Optical Society of America·M C FLOMD KAHNEMAN
Mar 20, 2004·Vision Research·Matthew P Simunovic, Richard Calver
Dec 29, 2004·Vision Research·Srividhya HariharanStanley A Klein
Jan 27, 2005·Journal of Vision·Denis G PelliNajib J Majaj
Feb 19, 2005·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Oliver Ehrt, Robert F Hess
Jan 26, 2008·Journal of Vision·Anirvan S Nandy, Bosco S Tjan
Jan 26, 2008·Journal of Vision·Marina V Danilova, Valeria M Bondarko
Oct 2, 2008·Nature Neuroscience·Denis G Pelli, Katharine A Tillman
Dec 4, 2012·Vision Research·John SiderovHarold E Bedell
Jul 25, 2013·Vision Research·Harold E BedellLenka Musilová
Dec 6, 2014·Journal of Vision·Einat Rashal, Yaffa Yeshurun

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Citations

Oct 3, 2020·Journal of Vision·Rajkumar Nallour RaveendranBenjamin Thompson
Dec 1, 2020·Optometry and Vision Science : Official Publication of the American Academy of Optometry·František PluháčekDaniela Kratkoczká
Dec 4, 2020·Vision Research·František PluháčekJohn Siderov
Jan 5, 2021·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Stephanie M Marten-Ellis, Harold E Bedell
Dec 27, 2019·Vision Research·John SiderovHarold E Bedell

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