Journal ArticleDOI
Apparent contrast of a sinusoidal grating in the simultaneous presence of peripheral gratings
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TLDR
Apparent contrast of a vertical sinusoidal grating in the simultaneous presence of peripheral gratings was measured as a function of peripheral contrast, with test contrast, and relative phase and position of the two gratings as parameters.About:
This article is published in Vision Research.The article was published on 1985-01-01. It has received 100 citations till now. The article focuses on the topics: Contrast (vision) & Grating.read more
Citations
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Journal ArticleDOI
Spatial interactions in apparent contrast: inhibitory effects among grating patterns of different spatial frequencies, spatial positions and orientations.
TL;DR: The data are consistent with the existence of a complex network of inhibitory interconnections among mechanisms that mediate contrast perception and must extend over spatial distances equivalent to more than 12 cycles of the central grating patch.
Journal ArticleDOI
The "silent" surround of V1 receptive fields: theory and experiments.
TL;DR: The detailed comparison of electrophysiological and psychophysical data reveals strong correlations between the integrative behavior of V1 cells and some aspects of "low- level" and "mid-level" conscious perception, suggesting that as early as the V1 stage, the visual system is able to make use of contextual cues to recover local visual scene properties or correct their interpretation.
Journal ArticleDOI
Center-surround interactions in foveal and peripheral vision
Jing Xing,David J. Heeger +1 more
TL;DR: The different center-surround interactions in the fovea and periphery can not be accounted for by cortical magnification, suggesting that center-Surround interactions at foveal and peripheral vision are incommensurable and play different functional roles in human image processing.
Journal ArticleDOI
Measurement and modeling of center-surround suppression and enhancement.
Jing Xing,David J. Heeger +1 more
TL;DR: Based on the experimental data, a computational model was developed to account for center-surround suppression and enhancement and confirmed previous findings that a surround stimulus could produce either contrast enhancement or contrast suppression depending on the balance of the central and surround contrasts.
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The effects of surround contrast on contrast thresholds, perceived contrast and contrast discrimination
TL;DR: The pattern of results resembles those produced in masking paradigms where the test and mask are coextensive if the spatial range of interactions is taken into account and hence the effects of the contrast surround may be merely a manifestation of normal masking processes.
References
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Journal ArticleDOI
Lightness and Retinex Theory
Edwin H Land,John J. McCann +1 more
TL;DR: The mathematics of a lightness scheme that generates lightness numbers, the biologic correlate of reflectance, independent of the flux from objects is described.
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Contrast masking in human vision
Gordon E. Legge,John M. Foley +1 more
TL;DR: A masking model is presented that encompasses contrast detection, discrimination, and masking phenomena that includes a linear spatial frequency filter, a nonlinear transducer, and a process of spatial pooling that acts at low contrasts only.
Journal ArticleDOI
The staircrase-method in psychophysics.
TL;DR: The use of the staircase-method is illustrated, its relative merits and demerits are discussed, and a modification is described which overcomes certain of the disadvantages of the method.
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Simultaneous brightness induction as a function of inducing and test-field luminances.
Journal ArticleDOI
Spatial Arrangement of Line, Edge and Grating Detectors Revealed by Subthreshold Summation
TL;DR: The present psychophysical experiments provide evidence for the existence of a variety of detectors responding optimally to lines, edges or gratings revealed by subth threshold summation measurements in which the effect of a subthreshold background on the contrast threshold of a test stimulus is determined.
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