Are You Schizophrenic?

Take a look at the image to the left, is it concave or convex?

Depending on your answer, it may signal whether you suffer from schizophrenia.

Definitely take a look at the video below, it's simply amazing what your brain will refuse to let you see even though you know what you should be seeing.

From Wired...

Schizophrenia sufferers aren't fooled by an optical illusion known as the “hollow mask” that the rest of us fall for because connections between the sensory and conceptual areas of their brains might be on the fritz.

In the hollow mask illusion, viewers perceive a concave face (like the back side of a hollow mask) as a normal convex face. The illusion exploits our brain's strategy for making sense of the visual world: uniting what it actually sees — known as bottom-up processing — with what it expects to see based on prior experience — known as top-down processing.

This powerful expectation overrides visual cues, like shadows and depth information, that indicate anything to the contrary. But patients with schizophrenia are undeterred by implausibility: They see the hollow face for what it is.

In healthy viewers, the illusion is so powerful that even when aware of the illusion (see video below), they are unable to see the concave face — the mind just flips it back.