Watanabe Junji, Nishida Shin'ya
PRESTO, Japan Science & Technology Agency/NTT Communication Science Laboratories, NTT Corporation, Kanagawa, Japan.
J Vis. 2007 Aug 16;7(11):3.1-16. doi: 10.1167/7.11.3.
For rapid alternations of two colors (e.g., red and green), human observers see the mixed color (yellow). This chromatic flicker fusion has been considered to reflect neural integration of color signals presented successively at the same retinal location. If so, the retinal alternation rate should be a critical fusion parameter. However, here we show that temporal alternations of two colors on the retina are perceptually segregated more veridically when they are presented as moving patterns rather than as stationary alternations at the same rate. This finding is consistent with the hypothesis that the visual system integrates color signals along the motion trajectory, in addition to at the same retinal location, for reducing motion blur and seeing veridical colors of moving objects. This hypothesis is further supported by a covariation of perceived motion direction and perceived color in a multipath motion display.
对于两种颜色（如红色和绿色）的快速交替，人类观察者会看到混合后的颜色（黄色）。这种彩色闪烁融合被认为反映了在视网膜同一位置相继呈现的颜色信号的神经整合。如果是这样，视网膜交替率应该是一个关键的融合参数。然而，我们在此表明，当两种颜色在视网膜上以移动模式呈现而非以相同速率进行静止交替时，它们在感知上能更准确地被分离。这一发现与以下假设一致，即视觉系统除了在视网膜同一位置外，还会沿着运动轨迹整合颜色信号，以减少运动模糊并看清移动物体的真实颜色。多路径运动显示中感知到的运动方向和感知到的颜色之间的协变进一步支持了这一假设。
