Measuring the amplification of attention
Measuring the amplification of attention
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DOI：
10.1073/pnas.96.20.11681
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发表时间：
1999-09-28
影响因子：
11.1
通讯作者：
Lu, ZL
中科院分区：
文献类型：
--
作者：
Blaser, E;Sperling, G;Lu, ZL
一种模糊的运动范例，其中明显运动的方向由显著性确定（即，一个区域被感知为图形对背景的程度）被用于分析通过关注颜色而产生的颜色放大。在这些实验中使用的红绿彩色光栅，没有注意力的指示，显着性取决于嵌入在运动序列和黄色背景的彩色条纹之间的色度差。对红色（或绿色）的选择性注意改变了运动的感知方向，并被发现相当于增加了25- 117%的物理红色（或绿色），这取决于观察者和颜色，而对颜色的注意极大地改变了该颜色的显着性，它使颜色外观保持不变。一个计算模型，它体现了独立的，平行的路径对象感知和显着性，占99%的实验数据的方差。
An ambiguous motion paradigm, in which the direction of apparent motion is determined by salience (i.e., the extent to which an area is perceived as figure versus ground), is used to assay the amplification of color by attention to color. In the red-green colored gratings used in these experiments, without attention instructions, salience depends on the chromaticity difference between colored stripes embedded in the motion sequence and the yellow background. Selective attention to red (or to green) alters the perceived direction of motion and is found to be equivalent to increasing the physical redness (or greenness) by 25-117%, depending on the observer and color, Whereas attention to a color drastically alters the salience of that color, it leaves color appearance unchanged. A computational model, which embodies separate, parallel pathways for object perception and for salience, accounts for 99% of the variance of the experimental data.