Complete sparing of high-contrast color input to motion perception in cortical color blindness.
Complete sparing of high-contrast color input to motion perception in cortical color blindness.
复制标题
完全避免皮质色盲患者运动感知的高对比度颜色输入。
DOI：
10.1038/688
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发表时间：
1998
期刊：
影响因子：
--
通讯作者：
Intriligator,J
中科院分区：
文献类型：
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作者：
Cavanagh,P;Henaff,MA;Michel,F;Landis,T;Troscianko,T;Intriligator,J
人们普遍认为，在视觉系统中，颜色和运动是由独立的平行通路处理的，但这种观点很难与这样一个事实相一致，即运动可以在仅由颜色定义的等亮度刺激中被检测到。为了研究颜色和运动之间的关系，我们测试了三名患者谁失去了他们的色觉皮层损伤（中央色盲）。尽管他们对颜色的主观体验有着深刻的损失，而且他们无法检测到微弱颜色的运动，但这三个受试者对高对比度的运动颜色刺激都表现出惊人的强烈反应，在各个方面与正常色觉受试者的表现相同。因此，从视网膜中的彩色探测器到运动分析区域的通路必须独立于枕颞区受损的色心。它可能也与运动分析区域MT/V5无关，因为这些患者的颜色对运动检测的贡献比猴子区域MT的颜色响应强得多。
It is widely held that color and motion are processed by separate parallel pathways in the visual system, but this view is difficult to reconcile with the fact that motion can be detected in equiluminant stimuli that are defined by color alone. To examine the relationship between color and motion, we tested three patients who had lost their color vision following cortical damage (central achromatopsia). Despite their profound loss in the subjective experience of color and their inability to detect the motion of faint colors, all three subjects showed surprisingly strong responses to high-contrast, moving color stimuli—equal in all respects to the performance of subjects with normal color vision. The pathway from opponent-color detectors in the retina to the motion analysis areas must therefore be independent of the damaged color centers in the occipitotemporal area. It is probably also independent of the motion analysis area MT/V5, because the contribution of color to motion detection in these patients is much stronger than the color response of monkey area MT.