文章基本信息

标题：Opposing effects of attention and consciousness on afterimages
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作者：Jeroen J. A. van Boxtel ; Naotsugu Tsuchiya ; Christof Koch 等
期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：2010
卷号：107
期号：19
页码：8883-8888
DOI：10.1073/pnas.0913292107
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：The brain's ability to handle sensory information is influenced by both selective attention and consciousness. There is no consensus on the exact relationship between these two processes and whether they are distinct. So far, no experiment has simultaneously manipulated both. We carried out a full factorial 2 x 2 study of the simultaneous influences of attention and consciousness (as assayed by visibility) on perception, correcting for possible concurrent changes in attention and consciousness. We investigated the duration of afterimages for all four combinations of high versus low attention and visible versus invisible. We show that selective attention and visual consciousness have opposite effects: paying attention to the grating decreases the duration of its afterimage, whereas consciously seeing the grating increases the afterimage duration. These findings provide clear evidence for distinctive influences of selective attention and consciousness on visual perception.
关键词：awareness ; continuous flash suppression ; Troxler fading ; dual-task ; visibility