The ability of brain to forecast future events is one of theimportant cognitive ability. According to Karl Friston (Friston K.,2003) it plays basic role in learning and adaptation to environmentalchanges. The ability to adapt is known to be reduced in patients withschizophrenia. The reason for this may be the inability of schizophrenicpatients to learn effectively and, thus, the inability toforecast environmental changes. In studies of brain's predictiveability by registration the MMN and P300 response to the standardand deviant (unexpected) stimuli differences were found inresponses by schizophrenic and healthy subjects (Umbricht et al.2003). In schizophrenia, these studies demonstrated deficits in MMNand P300 generation, but some studies failed to confirm it (Michie2001). Therefore, there is no answer to the question about the causesof violations in forecasting mechanism in schizophrenic patients. Weassumed that there are two parallel forecasting mechanisms - explicitand implicit (Gluck, Bower)