The two-factor model of<unk> s posits that dysfunction in both belief formation systems and belief evaluation systems are necessary for<unk> s. Dysfunction in evaluations systems localized to the right lateral prefrontal cortex, regardless of<unk>  content, is supported by neuroimaging studies and is congruent with its role in conflict monitoring in healthy persons. Abnormal activation and reduced volume is seen in people with<unk> s, as well as in disorders associated with<unk> s such as frontotemporal dementia, psychosis and Lewy body dementia. Furthermore, lesions to this region are associated with "jumping to conclusions", damage to this region is associated with post-stroke<unk> s, and hypometabolism this region associated with caudate strokes presenting with<unk> s. The aberrant salience model suggests that<unk> s are a result of people assigning excessive importance to irrelevant stimuli. In support of this hypothesis, regions normally associated with the salience network demonstrate reduced grey matter in people with<unk> s, and the neurotransmitter dopamine, which is widely implicated in salience processing, is also widely implicated in psychotic disorders. Specific regions have been associated with specific types of<unk> s. The volume of the hippocampus and parahippocampus is related to paranoid<unk> s in Alzheimer's disease, and has been reported to be abnormal post mortem in one person with<unk> s. Capgras<unk> s have been associated with occipito-temporal damage and may be related to failure to elicit normal emotions or memories in response to faces.
Delusion
Distress 
Morbid love
Perseveration
Obsessive love
Automatism 
Mindfulness
Intrusive thought