Perceived Speed of Colored Stimuli
نویسندگان
چکیده
منابع مشابه
Perceived Speed of Colored Stimuli
The influence of contrast and color on perceived motion was measured using a speed-matching task. Observers adjusted the speed of an L cone contrast pattern to match that of a variety of colored test patterns. The dependence of speed on test contrast was the same for all test colors measured, differing only by a sensitivity factor. This result suggests that the reduced apparent speed of low con...
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In this and two companion papers we examine the cortical basis for the relationship between perceived Stanford, California 94305 speed, color, and contrast. Here, behavioral experiments designed to measure how perceived speed depends on color and contrast are described. The second Summary paper reports functional magnetic resonance imaging (fMRI) measurements of color responsivity in a motion-T...
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Velocity matching using the method of Constant Stimuli shows that perceived velocity varies with contrast [Thompson, P. (1982). Perceived rate of movement depends upon contrast. Vision Research, 22, 377-380]. Random contrast jitter would therefore be expected to increase the slopes of psychometric functions, and thus the velocity discrimination threshold. However, McKee, S., Silverman, G., and ...
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The perception of speed is susceptible to manipulations of image contrast, both for simple sine wave and more complex stimuli, such that low-contrast patterns generally appear slower than their high-contrast equivalents. It is not known whether the crucial factor is the contrast of the underlying Fourier components or the contrast of the overall complex pattern. Here, two experiments investigat...
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ژورنال
عنوان ژورنال: Neuron
سال: 1999
ISSN: 0896-6273
DOI: 10.1016/s0896-6273(00)81036-3