After Image
Instructions: Stare at the black spot in the center of the four colored squares for about 30 seconds. Then scroll down and move your gaze to the black spot in the uniform white area. Note the colors of the afterimages relative to the colors of the original stimuli. Did they appear different?
残象
说明：盯着四个色块中间的黑点看30秒，然后再盯着下面白色区域中的黑点儿看会儿，上一幅的残像会映在下一幅上，你是不是也发现了？