Unconscious priming by color and form: Different processes and levels
Unconscious priming by color and form: Different processes and levels
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DOI：
10.1016/j.concog.2003.07.004
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发表时间：
2004-03-01
影响因子：
2.4
通讯作者：
Chen, J
中科院分区：
文献类型：
--
作者：
Breitmeyer, BG;Ogmen, H;Chen, J
使用元对比掩蔽范式，先前的研究已经表明：（a）目标的颜色信息和形状信息可以在没有意识的情况下被处理;（B）无意识的颜色处理发生在皮层信息处理层次结构中的早期波长依赖性水平。在这里，我们使用了副对比和元对比掩蔽技术相结合，探索无意识的颜色和形式的蓝色，绿色和中性刺激所产生的启动效应。我们发现，正常观察者的颜色启动显着减少时，一个额外的paracontrast面具之前的目标在最佳掩蔽SOA。然而，没有减少的形式启动的影响，在类似的最佳paracontrast SOA。我们的结论是，无意识的颜色启动取决于早期，波长或刺激依赖性反应的颜色神经元位于早期皮层水平，而无意识的形式启动发生在以后的水平。(C)2003年爱思唯尔公司All rights reserved.
Using a metacontrast masking paradigm, prior studies have shown (a) that a target's color information and form information, can be processed without awareness and (b) that unconscious color processing occurs at early, wavelength-dependent levels in the cortical information processing hierarchy. Here we used a combination of paracontrast and metacontrast masking techniques to explore unconscious color and form priming effects produced by blue, green, and neutral stimuli. We found that color priming in normal observers is significantly reduced when an additional paracontrast mask precedes the target at optimal masking SOAs. However, no reduction of form-priming effects was obtained at similar optimal paracontrast SOAs. We conclude that unconscious color priming depends on an early, wavelength- or stimulus-dependent response of color neurons located at early cortical levels whereas unconscious form priming occurs at later levels. (C) 2003 Elsevier Inc. All rights reserved.