Heywood C A, Wilson B, Cowey A
J Neurol Neurosurg Psychiatry. 1987 Jan;50(1):22-9. doi: 10.1136/jnnp.50.1.22.
A patient is described whose most striking visual disorder was a grossly impaired ability to discriminate between different colours (hues) that were matched for brightness. In contrast his ability to discriminate between different neutral greys presented in the same fashion was much less abnormal, even though the greys were perceptually difficult. Although visual acuity was reduced and visual fields were constricted, and the patient's memory was moderately impaired, these associated symptoms could not themselves be the cause of his unusual colour vision. The patient had the symptoms of cerebral achromatopsia, and the relative preservation of his form vision (when his reduced acuity is taken into account) and his achromatic vision supports the view that the many different visual cortical areas recently demonstrated in the brains of monkeys, and presumed to exist in man, have a perceptual specialisation that matches their physiological differences.
本文描述了一位患者，其最显著的视觉障碍是在辨别亮度匹配的不同颜色（色调）时能力严重受损。相比之下，他以同样方式辨别不同中性灰色的能力异常程度要小得多，尽管这些灰色在感知上具有难度。虽然患者视力下降、视野缩小，且记忆力有中度受损，但这些相关症状本身并非其异常色觉的原因。该患者有大脑性色盲的症状，其形态视觉（考虑到其降低的视力）和消色差视觉的相对保留支持了这样一种观点，即最近在猴子大脑中证实并推测人类也存在的许多不同视觉皮层区域具有与它们生理差异相匹配的感知特化。
