Zeki Semir, Cheadle Samuel, Pepper Joshua, Mylonas Dimitris
Laboratory of Neurobiology, University College LondonLondon, UK.
Front Hum Neurosci. 2017 May 10;11:229. doi: 10.3389/fnhum.2017.00229. eCollection 2017.
We undertook psychophysical experiments to determine whether the color of the after-image produced by viewing a colored patch which is part of a complex multi-colored scene depends on the wavelength-energy composition of the light reflected from that patch. Our results show that it does not. The after-image, just like the color itself, depends on the ratio of light of different wavebands reflected from it and its surrounds. Hence, traditional accounts of after-images as being the result of retinal adaptation or the perceptual result of physiological opponency, are inadequate. We propose instead that the color of after-images is generated after colors themselves are generated in the visual brain.
我们进行了心理物理学实验，以确定观看作为复杂多色场景一部分的彩色斑块所产生的后像颜色是否取决于该斑块反射光的波长 - 能量组成。我们的结果表明并非如此。后像，就像颜色本身一样，取决于从它及其周围反射的不同波段光的比例。因此，将后像传统地解释为视网膜适应的结果或生理拮抗的感知结果是不充分的。相反，我们提出后像的颜色是在视觉大脑中产生颜色之后生成的。
