Flicker HTRF as test of color vision.
Flicker HTRF as test of color vision.
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闪烁 HTRF 作为色觉测试。
DOI：
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发表时间：
1968
影响因子：
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通讯作者：
M. Urakubo
中科院分区：
文献类型：
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作者：
M. Ikeda;M. Urakubo
当红色和绿色刺激以适当的频率交替时，我们感觉到闪烁。可以通过改变两个辐射的比率来增加或减少闪烁；某些特定的比率可以使闪烁最小。当应用特定颜色的适配场时，由于选择性的色调适配，为了获得最小的闪烁，必须改变比率。例如，与其他光谱范围相比，红色适配场对红色造成更大的灵敏度损失。因此，应改变辐射比，以增加红色刺激对绿色刺激的辐射。引入因子HR和HG，分别表示红场和绿场引起的比值变化。大的HR是正常色觉的特别特征，对于色觉缺陷者获得的HR几乎为零。因此，HR与HO相结合，提供了一种区分色差和正常色差以及区分缺陷类型的新方法。HO规定了没有适应性的辐射比。目前的调查表明，这三个群体之间的歧视非常明显，没有发生错误分类。然而，二向色性与反常对象没有区别；关于这一点，还需要进一步研究。
When red and green stimuli are alternated at some appropriate frequency, we perceive flicker. The flicker can be increased or decreased by changing the ratio of the two radiances; some particular ratio gives minimum flicker. When an adapting field of a certain color is applied, the ratio must be changed in order to obtain the minimum flicker, owing to selective chromatic adaptation. A red adapting field, for example, causes greater sensitivity loss for red compared to other spectral ranges. Thus the radiance ratio should be altered so as to increase the radiance of red stimulus over the green one. Factors HR and HG are introduced which specify the ratio change caused by the red and green adapting fields, respectively. A large HR is especially characteristic of normal color vision, and virtually zero HR is obtained for color defectives. Thus HR, in combination with HO, which specifies the radiance ratio with no adaptation, provides a new method of discriminating color defectives from normals and distinguishing types of defects. The present investigation shows that the discrimination among the three groups is very clear and that no misclassification occurs. However, dichromats are not distinguished from anomalous subjects; further investigation is needed concerning that point.