This study investigated S-cone discrimination using a test annulus surrounded by an inner and outer adapting field with systematic manipulation of the adapting l = L/(L + M) or s = S/(L + M) chromaticities. The results showed that different adapting l chromaticities altered S-cone discrimination for a high adapting s chromaticity due to parvocellular input to the koniocellular pathway. In addition, S-cone discrimination was determined by the combined spectral signals arising from both adapting fields. The “white” adapting field or an adapting field with a different l chromaticity from the other fields was more likely to have a stronger influence on discrimination thresholds. These results indicated that the two cardinal axes are not independent in S-cone discrimination, and the two adapting fields jointly contribute to S-cone discrimination through a cortical summation mechanism.
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机译：这项研究使用被内部和外部适应场包围的测试环，通过系统地处理适应度l = L /（L + M）或s = S /（L + M）色度，研究了S锥识别。结果表明，由于细小细胞向运动细胞通路的输入，不同的适应性l色度改变了S-圆锥分辨力，从而获得了高适应性s色度。另外，S-圆锥辨别是由两个适应场产生的组合光谱信号确定的。 “白色”适应场或具有与其他场不同的l色度的适应场对歧视阈值的影响更大。这些结果表明，两个基本轴在S-圆锥辨别中不是独立的，并且两个适应场通过皮层求和机制共同促进S-圆锥辨别。
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