Researchers mapping the functions of the brain have shown that the hallucinations of psychosis involve hyper activation of the seeking system's structures. They also involve dysregulated dopamine transmission. Increasingly viewed as "the wind of the psychotic fire," dopamine prompts the brain to assign abnormal importance to its own internal representations. Delusions, in other words, are errors of salience attribution. We overvalue our own thoughts, which are mistaken for perceptual experience of the world.