Adult brightness vs. luminance as models of infant photometry: variability, biasability, and spectral characteristics for the two age groups favor the luminance model.
Adult brightness vs. luminance as models of infant photometry: variability, biasability, and spectral characteristics for the two age groups favor the luminance model.
复制标题
成人亮度与亮度作为婴儿测光模型：两个年龄组的可变性、偏差和光谱特征有利于亮度模型。
DOI：
10.1167/3.5.2
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发表时间：
2003
影响因子：
1.8
通讯作者：
Civan,AndreaL
中科院分区：
文献类型：
--
作者：
Teller,DavidaY;Pereverzeva,Maria;Civan,AndreaL
当婴儿无法进行色彩辨别时，他们的表现最小值的特征是否与成人亮度匹配或异色亮度匹配的特性更接近一致？除了它们的光谱特性之外，成人亮度匹配的典型特征在于相对较小的个体差异，而亮度匹配被认为是更可变和更双折射的。两个互补的实验进行了成人和8周大的婴儿科目。两组都使用不同亮度的小（1.5至4）红色和蓝色测试场进行测试，嵌入白色环境中。在成人中，测量异色亮度匹配。个体差异跨越约0.5个对数单位，和亮度匹配可以通过改变测试场亮度的范围被偏置多达0.8个对数单位。在婴儿中，性能最低的位置进行了测量。个体差异跨度小于0.1 log单位，平均性能最小值与基于V 10（λ）的预测值一致，并且性能最小值的位置几乎不受所用测试场亮度范围的影响。因此，通过所有三个标准，这些数据表明，婴儿的性能最小值是由亮度而不是亮度信号介导的。到目前为止，还没有证据表明婴儿的视觉系统计算亮度信号。
When infants fail to make chromatic discriminations, do the characteristics of their performance minima coincide more closely with the properties of adult luminance matches or heterochromatic brightness matches? In addition to their spectral properties, adult luminance matches are typically characterized by relatively small individual differences, whereas brightness matches are believed to be both more variable and more biasable. Two complementary experiments were carried out on adults and 8-week-old infant subjects. Both groups were tested with small (1.5 to 4) red and blue test fields of varying luminances, embedded in a white surround. In adults, heterochromatic brightness matches were measured. Individual differences spanned about 0.5 log units, and brightness matches could be biased by as much as 0.8 log units by varying the range of test field luminances. In infants, the locations of performance minima were measured. Individual differences spanned less than 0.1 log units, the mean performance minima coincided with predictions based on V 10 (λ), and the location of the performance minimum was nearly unaffected by the range of test field luminances used. Thus by all three criteria, these data suggest that infants’ performance minima are mediated by luminance rather than by brightness signals. To date there remains no evidence that the infant visual system computes a brightness signal.