The effect of a red background on location backward masking by structure

被引:12
作者
Bedwell, Jeffrey S. [2 ]
Brown, James M. [1 ]
Orem, Dlna M.
机构
[1] Univ Georgia, Athens, GA 30602 USA
[2] Univ Cent Florida, Dept Psychol, Orlando, FL 32816 USA
来源
PERCEPTION & PSYCHOPHYSICS | 2008年 / 70卷 / 03期
关键词
D O I
10.3758/PP.70.3.503
中图分类号
B84 [心理学];
学科分类号
04 ; 0402 ;
摘要
It has been established that diffuse red light partially suppresses the magnocellular (M) visual pathway. Previous research reported that metacontrast masking is reduced (improved accuracy) with a red background, consistent with a reduction in M pathway response from the mask. In contrast, a recent study used location backward masking by noise and found that accuracy decreased with a red background-theoretically due to suppression of the M pathway's initial localization of the target. The present study provides the first report examining the effect of red light on performance in a location backward masking by structure task. Results revealed a main effect of a red (as opposed to a green) background on reducing masking (improved accuracy) with a medium effect size (eta(2) =.23). This effect was strongest at the 47- and 60-msec stimulus onset asynchronies. Results suggest that red light primarily decreases interference from the mask in location backward masking by structure.
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页码:503 / 507
页数:5
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