Face Compositions

In my neurophysiology class the other day my professor showed us this link that reminds me of Galton's composition portraits

I thought it was pretty neat.  It was used in my neurophysiology class to illustrate self recognition and perception in patients that experience split brain surgeries and used to determine which hemisphere of the brain is used to determine if the composite faces are male or female etc. 

http://www.faceresearch.org/demos/average