Koyama Shinichi, Kezuka Machiko, Hibino Haruo, Tomimitsu Hiroyuki, Kawamura Mitsuru
Department of Neurology, Showa University School of Medicine, Japan.
Neuroreport. 2006 Feb 6;17(2):109-13. doi: 10.1097/01.wnr.0000198947.00445.66.
Cerebral dyschromatopsia is traditionally evaluated by color discrimination tests such as the Farnsworth-Maunsell 100 Hue Test. These tests are also used to evaluate color-perception deficits caused by eye disease, and they do not tell us whether color perception is impaired in the eye or in the brain. Here, we used color afterimage to isolate color-perception deficits in the brain from those in the eyes, in a patient with cerebral dyschromatopsia. The results showed that the patient perceived color afterimage of yellow and blue with abnormal duration and chromaticity. On the other hand, the patient performed normally on the Farnsworth-Maunsell 100 Hue Test. We conclude that the color afterimage test would be useful to evaluate color perception in the brain.
传统上，大脑性色觉障碍是通过诸如 Farnsworth-Maunsell 100 色调测试等颜色辨别测试来评估的。这些测试也用于评估由眼部疾病引起的色觉缺陷，并且它们无法告诉我们色觉是在眼睛还是大脑中受损。在此，我们利用颜色后像，在一名患有大脑性色觉障碍的患者中，将大脑中的色觉缺陷与眼睛中的色觉缺陷区分开来。结果显示，该患者感知到的黄色和蓝色颜色后像的持续时间和色度异常。另一方面，该患者在 Farnsworth-Maunsell 100 色调测试中表现正常。我们得出结论，颜色后像测试对于评估大脑中的色觉将是有用的。
