The Hollow Mask Illusion

Wired Science reports on a fascinating finding: schizophrenics have trouble seeing the hollow mask illusion, in which people perceive the concave inside of a mask as an actual face. The reason we're vulnerable to this illusion is that our expectations of what we'll see - we're used to seeing real faces - profoundly influence our actual sensations. Schizophrenics, however, seem to have trouble with modulating their perceptions, which might explain why they persistently believe in delusions and fa