Rapid colour-specific detection of motion in human vision

被引:89
作者
Cropper, SJ [1 ]
Derrington, AM [1 ]
机构
[1] UNIV NOTTINGHAM,DEPT PSYCHOL,NOTTINGHAM NG7 2RD,ENGLAND
基金
英国惠康基金;
关键词
D O I
10.1038/379072a0
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
THE human visual system is much better at analysing the motion of luminance (black and white) patterns than it is at analysing the motion of colour patterns(1-4), especially if the pattern is presented very briefly(5) or moves rapidly(6). We report here that observers reliably distinguish the direction of motion of a colour pattern presented for only 17 milliseconds, provided that the contrast is several times the threshold value (the contrast needed to detect the presence of the pattern). A control experiment, in which a static luminance 'mask' is added to the moving colour pattern, proves that discrimination of the direction of motion of these brief stimuli is colour-specific. The mask drastically impairs discrimination of the direction of motion of a luminance pattern, but it has little effect on a colour pattern. We conclude that the human visual system contains colour-specific motion-detection mechanisms that are capable of analysing very brief signals.
引用
收藏
页码:72 / 74
页数:3
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