Contingent aftereffects distinguish conscious and preconscious color processing
Contingent aftereffects distinguish conscious and preconscious color processing
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DOI：
10.1038/nn1723
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发表时间：
2006-07-01
影响因子：
25
通讯作者：
MacLeod, Donald I. A.
中科院分区：
文献类型：
--
作者：
Vul, Edward;MacLeod, Donald I. A.
大脑可以在没有感知的情况下处理输入，但有意识的处理和潜意识的处理有什么区别？利用快速变化的图像引起的后效，我们表明，皮质机制跟踪颜色的速度比感知快得多，对太快而无法察觉的颜色变化反应良好。有意识的颜色知觉的频率反应受到更多的限制，这表明额外的整合步骤使有意识的颜色知觉的时间进程比早期皮质机制的时间慢得多。
The brain can process input without perception, but what distinguishes conscious from preconscious processing? Using aftereffects induced by quickly alternating images, we show that cortical mechanisms track color much faster than perception, responding well to color alternations that are too rapid to be perceptible. The more restricted frequency response of the conscious perception of color suggests that extra integrative steps give conscious color perception a time course substantially slower than that of early cortical mechanisms.