The phenomenology of attention .2. Brightness and contrast
The phenomenology of attention .2. Brightness and contrast
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DOI：
10.1006/ccog.1997.0313
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发表时间：
1997-06-01
影响因子：
2.4
通讯作者：
Shimizu, N
中科院分区：
文献类型：
--
作者：
Prinzmetal, W;Nwachuku, I;Shimizu, N
在八个实验中，研究了注意力对感知亮度和对比度的影响。注意力是通过让观察者参与要求注意的同时任务(字母检测)或通过将注意力引导到有外围线索的位置来操纵的，在所有的双重任务操纵中，注意力减少了反应的变异性。然而，注意力不影响刺激的亮度，也不影响同时亮度对比度的大小。与外围位置线索的结果相似；然而，在这些实验中，注意力的影响可能归因于非感知因素，隐喻的注意力的“聚光灯”减少了观察者对刺激亮度的不确定性，但它并不“照亮”亮度或对比度。(C)1997年学术出版社。
The effect of attention on perceived brightness and contrast was in investigated in eight experiments. Attention was manipulated by engaging observers in an attention-demanding concurrent task (letter detection) or by directing attention to a location with a peripheral cue, In ail of the dual-task manipulations, attention reduced the variability of responses. However, attention did not affect the brightness of stimuli, nor did it affect the amount of simultaneous brightness contrast. Results with peripheral location cues were similar; however, the effect of attention in these experiments could be attributed to nonperceptual factors, The metaphorical ''spotlight'' of attention reduces observers' uncertainty about the brightness of a stimulus, but it does not ''illuminate'' in terms of brightness or contrast. (C) 1997 Academic Press.