CONTRAST SENSITIVITY AS A FUNCTION OF POSITION ON THE RETINA
CONTRAST SENSITIVITY AS A FUNCTION OF POSITION ON THE RETINA
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DOI：
10.1016/0042-6989(80)90108-x
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发表时间：
1980-01-01
期刊：
影响因子：
1.8
通讯作者：
VANDERWILDT, GJ
中科院分区：
文献类型：
--
作者：
RIJSDIJK, JP;KROON, JN;VANDERWILDT, GJ
人类视觉系统的对比敏感度被测量为沿沿着几条子午线的偏心率的函数。测量是用2维正弦光栅（交叉光栅）进行的，该光栅呈现在亮度等于平均刺激亮度的环境中。这种刺激超过1维光栅的优点是，它允许在相同亮度的环境中呈现小尺寸的刺激，而在刺激的边缘处没有不连续性。所获得的对比灵敏度与一维光栅进行了比较。灵敏度的降低取决于测量时所沿的子午线沿着。等灵敏度曲线图显示这些曲线有点椭圆形。
Contrast sensitivity of the human visual system was measured as a function of the eccentricity along several meridians. The measurements were carried out with a 2-dimensional sinusoidal grating (cross grating) presented in a surround with a luminance equal to the average stimulus luminance. The advantage of this stimulus over a 1-dimensional grating is that it permits presentation of small-sized stimuli, in a surround of the same luminance, without discontinuities at the edges of the stimulus. The contrast sensitivity obtained compares with 1-dimensional gratings. The decrease in sensitivity is dependent on the meridian along which it is measured. Plots of equal sensitivity curves show these curves are somewhat ellipsoidal.