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RAPID COLOUR-SPECIFIC DETECTION OF MOTION IN HUMAN VISION

机译:快速视觉检测人类视觉中的运动

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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. [References: 19]
机译:人眼视觉系统在分析亮度(黑白)模式的运动方面要比分析彩色模式的运动(1-4)更好,特别是如果模式显示得很简短(5)或移动迅速( 6)。我们在这里报告,只要对比度是阈值的几倍(检测到图案存在的对比度),观察者就可以可靠地区分仅显示17毫秒的彩色图案的运动方向。对照实验中,将静态亮度“遮罩”添加到运动色图案中,证明对这些短暂刺激的运动方向的辨别是特定于颜色的。掩模极大地损害了亮度图案的运动方向的辨别力,但是对彩色图案的影响很小。我们得出的结论是,人类视觉系统包含特定于颜色的运动检测机制,能够分析非常简短的信号。 [参考:19]

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