http://psycharts.com/opt_illus.html

http://psycharts.com/opt_illus.html

When you look at the figure you will see either a vase or two faces. If you continue to look, the figure will appear to shift to the alternative organization

Embedded Images

http://psycharts.com/opt_illus.html

The shades of red are identical

The difference in the appearance is related to the influence of the

backgrounds. http://psycharts.com/opt_illus.html

Compare the shades of red…

Old Woman or Young Girl?http://psycharts.com/opt_illus.html

Man/Woman

http://psycharts.com/opt_illus.html

Shimmerhttp://psycharts.com/opt_illus.html

http://www.at-bristol.org.uk/Optical/Hermann_main.htm

                                                                                                                                      

Hermann Grid