Different sensations from cones with the same photopigment
Different sensations from cones with the same photopigment
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DOI：
10.1167/5.5.5
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发表时间：
2005-01-01
影响因子：
1.8
通讯作者：
Williams, DR
中科院分区：
文献类型：
--
作者：
Hofer, H;Singer, B;Williams, DR
我们使用自适应光学来研究微小闪光出现时的颜色波动。对于5名受试者，近阈值，单色刺激与全宽度在半最大值的1/3弧分，提供了整个补丁的视网膜近1度，其中我们还确定了位置的L，M，和S锥。受试者报告了各种各样的颜色感觉，即使是长波长的刺激，所有受试者报告蓝色或紫色的感觉，S锥不敏感的波长。具有更多L视锥细胞的受试者报告了更多的红色感觉，而具有更多M视锥细胞的受试者倾向于报告更多的绿色感觉。白色反应随L/M视锥比的不对称性线性增加。在颜色反应的多样性不能完全解释的组合L和M锥兴奋，这意味着同一类内的光感受器可以引起一个以上的颜色感觉。
We used adaptive optics to study color fluctuation in the appearance of tiny flashes of light. For five subjects, near threshold, monochromatic stimuli with full widths at half maximum of 1/3 arcmin were delivered throughout a patch of retina near 1 deg in which we also determined the locations of L, M, and S cones. Subjects reported a wide variety of color sensations, even for long-wavelength stimuli, and all subjects reported blue or purple sensations at wavelengths for which S cones are insensitive. Subjects with more L cones reported more red sensations, and those with more M cones tended to report more green sensations. White responses increased linearly with the asymmetry in L to M cone ratio. The diversity in the color response could not be completely explained by combined L and M cone excitation, implying that photoreceptors within the same class can elicit more than one color sensation.