Neuroscientist David Eagleman and his team have conducted perception experiments on schizophrenics, and Eagleman theorize that schizophrenics suffer from something called ‘credit misattribution’. They hear voices, but don’t believe that they’re causing the voices themselves. The experiment suggest that the schizophrenic brain’s perception of time is off, causing an action’s effect to seem to occur before the cause.
Read the short article here: http://www.realclearscience.com/blog/2012/08/is-schizophrenia-simply-a-matter-of-time.html
The original article here (behind paywall): http://www.sciencedirect.com/science/article/pii/S1364661302019459