Adaptability of the visual system is inversely related to its sensitivity.
Adaptability of the visual system is inversely related to its sensitivity.
复制标题
视觉系统的适应性与其敏感性成反比。
DOI：
--
复制
发表时间：
1994
影响因子：
1.9
通讯作者：
R. Snowden
中科院分区：
文献类型：
--
作者：
R. Snowden
长时间观察高对比度图案（适配器）会使类似图案更难检测。使用正弦光栅图案，测量作为适配器的对比度的函数的这种阈值升高效应。刺激的空间频率、时间频率或偏心率的增加有两个主要后果。首先，检测模式所需的最小对比度上升;其次，阈值升高与适应对比度相关的函数变得更陡。有人建议，这种增加的斜率的功能反映了这些机制，这可能会发生补偿其相对较差的灵敏度增加的增益。改变受试者的能力来检测适应模式的正交方向的面具有显着不同的影响阈值海拔与适应对比度函数。在这些条件下，斜率减小。结果支持这样的想法，即人类视觉系统试图通过使不同的增益与不同的机制相关联来补偿灵敏度的差异。
Prolonged viewing of a high-contrast pattern (the adapter) makes similar patterns harder to detect. This threshold-elevation effect was measured as a function of the contrast of the adapter, with use of sinusoidal grating patterns. Increases in the spatial frequency, temporal frequency, or eccentricity of the stimuli had two major consequences. First, the minimum contrast required for detection of the pattern rose; and second, the function that related threshold elevation to adapting contrast became steeper. It is suggested that this increase in the slope of the function reflects the increased gain of these mechanisms, which might occur as compensation for their relatively poor sensitivity. Changing the subject's ability to detect the adapting pattern by means of masks of an orthogonal orientation had markedly different effects on the threshold-elevation-versus-adapting-contrast function. Under these conditions the slope was decreased. The results support the idea that the human visual system tries to compensate for differences in sensitivity by having different gains be associated with different mechanisms.
正向图案掩蔽：空间频率和对比度的影响。
DOI：
10.1364/josaa.8.002026
发表时间：
1991
期刊：
Journal of the Optical Society of America. A, Optics and image science
影响因子：
--
作者：
Foley,JM;Yang,YD
通讯作者：
Yang,YD