Figure 8.9: Complementarity of afterimages Stare at the dot in the middle of the flag for at least half a minute. Then look at the dot on the white space beside the flag. What do you see?
To demonstrate that this effect involves a change within the retina, or at least somewhere early in the visual system before the input from the two eyes converges, repeat the demonstration but this time keep one eye closed as you stare at the middle of the flag. Then look at the dot in the white space first with one eye and then with the other. What happens?
To demonstrate that this effect involves a change within the retina, or at least somewhere early in the visual system before the input from the two eyes converges, repeat the demonstration but this time keep one eye closed as you stare at the middle of the flag. Then look at the dot in the white space first with one eye and then with the other. What happens?