Schilder P, Pasik P, Pasik T
Science. 1967 Nov 10;158(3802):806-9. doi: 10.1126/science.158.3802.806.
Thirteen normal monkeys (Macaca mulatta) trained to discriminate between transilluminated figures of equal area and different luminance, and consequently different luminous flux, made similar numbers of errors during training on a new problem with the same luminance values but with targets equated for luminous flux. These findings together with results of "critical trials" suggest that the significant cue in the original problem was luminous flux. This behavior is strikingly similar to what has been reported for the monkey following exclusion of the geniculostriate system.
13只经过训练以区分等面积、不同亮度（因而光通量不同）的透照图形的正常猕猴，在针对一个新问题的训练过程中，面对相同的亮度值但光通量相等的目标时，出现了相似数量的错误。这些发现以及“关键试验”的结果表明，原始问题中的重要线索是光通量。这种行为与在切除膝状纹状体系统后的猕猴身上所报告的情况惊人地相似。
