Nonlinearities of near-threshold contrast transduction.
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TLDR
The authors' analysis suggests that, with low spatial frequency gratings, detection was based on those bars that become darker; with high-frequency grating, on the Bars that become brighter, and that only a small portion of the near-threshold nonlinearity could be attributed to uncertainty.About:
This article is published in Vision Research.The article was published on 1999-05-15 and is currently open access. It has received 40 citations till now.read more
Citations
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Binocular contrast vision at and above threshold.
TL;DR: This work performs binocular summation and monocular, binocular, and dichoptic masking experiments for horizontal 1 cycle per degree test and masking gratings to reject three previously published proposals and favors the two-stage model.
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Signal detection theory in the 2AFC paradigm: attention, channel uncertainty and probability summation.
TL;DR: Signal Detection Theory provides a basis for accurate analysis of the observer's attentional strategy and effective degree of probability summation over attended neural channels and provides substantially different predictions from those of previous approximation analyses.
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"Black" responses dominate macaque primary visual cortex v1.
TL;DR: The results strongly suggest that the black-over-white preference is generated or greatly amplified in V1, and agree with human EEG and fMRI findings that V1 responses to decrements are stronger than to increments, though the OFF/ON imbalance in layers 2/3 of macaque V1 is much larger than in the whole V1 population in the human V1 experiments.
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Lateral sensitivity modulation explains the flanker effect in contrast discrimination
TL;DR: The divisive inhibition model of contrast discrimination is extended by implementing the flanker effect as a lateral multiplicative sensitivity modulation, and the horizontal shift at high pedestal contrasts suggests that the flankers effect is a multiplicative factor that cannot be explained by previous models of contrastdiscrimination.
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Generation of Black-Dominant Responses in V1 Cortex
TL;DR: The results indicated the neural circuitry in V1 is wired with a preference to strengthen black responses, and it is hypothesized that this selective wiring could be due to feedforward connectivity from black-dominant neurons in layer 4C to cells in layer 2/3, or a combination of both.
References
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Book
Signal detection theory and psychophysics
David M. Green,John A. Swets +1 more
TL;DR: This book discusses statistical decision theory and sensory processes in signal detection theory and psychophysics and describes how these processes affect decision-making.
Journal ArticleDOI
Mathematical analysis of random noise
TL;DR: In this paper, the authors used the representations of the noise currents given in Section 2.8 to derive some statistical properties of I(t) and its zeros and maxima.
Journal ArticleDOI
Uncertainty explains many aspects of visual contrast detection and discrimination.
TL;DR: In this article, the uncertainty model of visual contrast detection was proposed, which assumes that the observer is uncertain among many signals and chooses the likeliest with only four parameters, and explains why d' is approximately a power function of contrast and accurately predicts effects of summation, facilitation, noise, subjective criterion and task for near-threshold contrast.
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Human luminance pattern-vision mechanisms: masking experiments require a new model.
TL;DR: In this paper, the authors proposed a new model that incorporates broadband divisive inhibition, consistent with physiology, for simultaneous luminance pattern masking, and found that the model can shift the threshold-versus-masker contrast function horizontally by a multiplicative constant.