• Publications
  • Influence
Temporal properties of brightness and color induction
With a matching procedure, we studied the temporal properties of direct brightness (or lightness) and chromatic changes (produced by modulation of the region being matched) and induced brightness andExpand
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Hue Scaling of Isoluminant and Cone-specific Lights
Using a hue scaling technique, we have examined the appearance of colored spots produced by shifts from white to isoluminant stimuli along various color vectors in order to examine color appearanceExpand
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  • PDF
Orientation and spatial frequency selectivity of adaptation to color and luminance gratings
Prolonged viewing of sinusoidal luminance gratings produces elevated contrast detection thresholds for test gratings that are similar in spatial frequency and orientation to the adaptation stimulus.Expand
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A multi-stage color model
The first stage of our model has three cone types, with L:M:S cones in ratios of 10:5:1. In the second stage, retinal connectivity leads to three pairs of cone-opponent, and one pair ofExpand
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Motion contrast and motion integration
Abstract When a moving aperture contains a drifting grating, the perception of aperture movement is strongly affected by the grating movement. We have studied this interaction, using a movingExpand
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Vernier acuity with stationary moving Gabors
Abstract We examined the ability of observers to determine the vertical alignment of three Gabor patches (cosine gratings tapered in X and Y by Gaussians) when the grating within the middle patch wasExpand
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Motion-reversal Reveals Two Motion Mechanisms Functioning in Scotopic Vision
We studied scotopic motion mechanisms, using a two-frame sinusoidal grating separated by various ISIs equated for mean luminance level. Perceived direction of displacement varied with both ISI andExpand
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Spatial frequency adaptation can enhance contrast sensitivity
Abstract Adaptation to a high-contrast sinusoidal luminance grating produces a temporary, band limited loss in sensitivity centered around the adaptation frequency. The decrease appears to be bothExpand
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Modulation of perceived contrast by a moving surround
The apparent contrast of a center pattern depends on the contrast of its surround. To examine the suprathreshold perception of moving patterns, we measured the perceived contrast of a moving gratingExpand
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