![image](myerspel4e_fig_5_19.jpg)
FIGURE 5.19 A Necker cube What do you see: circles with white lines, or a cube? If you stare at the cube, you may notice that it reverses location, moving the tiny X in the center from the front edge to the back. At times, the cube may seem to float forward, with circles behind it. At other times, the circles may become holes through which the cube appears, as though it were floating behind them. There is far more to perception than meets the eye.
From American Journal of Psychology. Copyright 1977 by the Board of Trustees of the University of Illinois. Used with permission of the University of Illinois Press.