Invariance of the slope of the psychometric function with spatial summation

Journal of the Optical Society of America. A, Optics and Image Science
M J Mayer, C W Tyler

Abstract

The high-threshold probability summation model for improved detection of near-threshold gratings with increased spatial extent of the patterns assumes that the detection psychometric function is a Weibull function. This model predicts that the slope of the psychometric function should not change as the number of mechanisms stimulated increases, although other models predict that the slope should vary. We confirm for a two-alternative, forced-choice paradigm that the slope parameter does not vary systematically with spatial frequency or with number of periods of the grating, although there are reliable differences in average slope between observers.

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Citations

Sep 14, 2007·Proceedings. Biological Sciences·Tim S Meese, Robert J Summers
Oct 15, 2013·PloS One·Keith A May, Joshua A Solomon
May 13, 2004·Psychological Methods·Rocío Alcalá-Quintana, Miguel A García-Perez
Sep 24, 1999·Vision Research·L L Kontsevich, C W Tyler
May 26, 1999·Vision Research·U Polat, C W Tyler
Mar 1, 2014·Vision Research·Daniel H Baker, Tim S Meese
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May 22, 2007·Vision Research·Tim S Meese, Robert F Hess
Dec 20, 2015·IEEE Transactions on Visualization and Computer Graphics·Georges NaderFlorent Dupont
Aug 30, 2005·Perception·Stefan LouwJan J Koenderink
Jan 1, 1990·Journal of the Optical Society of America. A, Optics and Image Science·J L Dannemiller, J N Ver Hoeve
May 5, 2001·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·S C Dakin
Mar 15, 2016·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Amithavikram R HathibelagalAndrew J Zele
Feb 9, 1999·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·L L Kontsevich, C W Tyler
Aug 14, 1989·Physical Review Letters·R L FarrowG J Rosasco

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