Researchers at Yale and the University of Texas used a neural network -- a computer brain -- to test out medical theories of what causes schizophrenia. The result was a computer brain that can't tell the difference between stories about itself and fanciful stories about gangsters, and claims responsibility for terrorist acts.
Uli Grasemann and Risto Miikkulainen are using their neural network system, DISCERN, to model what might be going on inside a schizophrenic brain. DISCERN can understand and produce natural language. Working with Ralph Hoffman, a psychiatrist at Yale, they have also been able to pair their neural network results with a study of human schizophrenics, and the similarities have been striking.