Luminance contrast and motion detection

Luminance contrast and motion detection
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亮度对比度和运动检测

DOI:
10.1016/0042-6989(90)90136-9
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发表时间:
1990
期刊:
影响因子:
1.8
通讯作者:
R. Hess
R. Hess
中科院分区:
心理学3区
文献类型:
--
作者:
J. C. Boulton;R. Hess

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Direction discrimination was used to measure the minimum and maximum displacement for the detection of motion (DminandDmax) for abruptly displaced sinewave gratings. This was measured for a range of contrast levels from 2 to 32 times the detection threshold for a range of spatially narrow band stimuli. Performance forDmin(but notDmax) was found to deteriorate with an increase in contrast, with the most sensitive values forDminobtained at contrast levels of 4–8 times detection threshold. This dependence on luminance contrast is thought to be due to the physiology of the visual system, rather than the physics of the stimulus.
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