Newscientist also covered this. They have a couple more masks to look at http://www.newscientist.com/article/dn16911-schizophrenics-see-through-hollowmask-illu

Newscientist also covered this. They have a couple more masks to look at http://www.newscientist.com/article/dn16911-schizophrenics-see-through-hollowmask-illusion.html http://www.newscientist.com/article/dn16911-schizophrenics-s...