EFFECTS OF FIELD AREA AND CONFIGURATION ON CHROMATIC AND BORDER DISCRIMINATIONS
EFFECTS OF FIELD AREA AND CONFIGURATION ON CHROMATIC AND BORDER DISCRIMINATIONS
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DOI：
10.1016/0042-6989(87)90112-x
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发表时间：
1987-01-01
期刊：
影响因子：
1.8
通讯作者：
BOYNTON, RM
中科院分区：
文献类型：
--
作者：
ESKEW, RT;BOYNTON, RM
视觉辨别力通过仅在亮度、S 视锥细胞激发或 L 与 M 视锥细胞激发比率方面不同的并置场进行测试。观察者被要求根据色差标准或领域之间边界的感知进行区分。通过增加其公共连接点的长度或通过在恒定的连接点长度下增加其宽度来改变场的面积。对于大于 0.2-0.4 deg2 的视场，面积控制灵敏度。对于较小的视场，具有长公共结点的窄视场的辨别力可能比具有小公共结点的宽视场的辨别力更差，特别是对于依赖于 S 锥体的辨别力，其中场分量往往在空间上整合。减少观看时间可以减轻这种影响的程度。 S 锥体和 L-M 通道锐度估计约为 7 和 32 c/deg。分别。
Visual discrimination was tested with juxtaposed fields that differed only in luminance, S cone excitation, or the ratio of L to M cone excitation. Observers were asked to make discriminations based upon a criterion of color difference or of the perception of a border between fields. The area of the fields was varied aeither by increasing the length of their common junction or by increasing their widths at constant junction length. For fields larger than 0.2-0.4 deg2, area controls sensitivity. For smaller fields, discrimination may be worse for narrow fields with long common junctions than for wide ones with small common junctions, especially for discriminations that depend upon S cones, in which the field components tend to become spatially integrated. Decreasing viewing time reduces the magnitude of this effect. S cone and L-M channel acuities were estimated at about 7 and 32 c/deg. respectively.