Collinear facilitation (CF) is the improvement of the detection sensitivity of the target when two high-contrast flanking stimuli (flankers) have the same visual properties. While it is known that CF does not occur between achromatic flanking stimuli and chromatic targets, or vice versa, it remains unclear whether CF occurs when the hue of the target and flankers are different. We measured CF for Gabor stimuli defined in an isoluminant plane using stimuli defined by isoluminant colors along isolated cone-opponent axes and in two diagonal directions. The measured CF varied with the difference in hue between the target and flankers. Moreover, increased thresholds were also observed. These results suggest that CF exhibits hue selectivity and involves a suppression as well as a facilitation component. The hue selectivity profile of these factors infer that the CF cannot be simply explained by the assumption of two independent cone opponent mechanisms.

中文翻译：

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共线促进的色相选择性。

当两个高对比度侧翼刺激（侧翼）具有相同的视觉属性时，共线促进（CF）是目标检测灵敏度的提高。众所周知，在消色差侧翼刺激和彩色目标之间不会出现CF，反之亦然，但是当目标和侧翼的色调不同时，是否会出现CF仍不清楚。我们使用隔离体颜色沿隔离的圆锥对手轴和两个对角线方向定义的刺激物，测量了在隔离物平面中定义的Gabor刺激物的CF。测得的CF随目标和侧翼之间的色调差异而变化。此外，还观察到阈值增加。这些结果表明，CF具有色相选择性，并涉及抑制和促进成分。