How visual hallucinations happen

http://m.medwirenews.com/61/105446/Psychotic_disorders/Biological_basis_for_visual_hallucinations_identified

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Thank you for posting this. Lots of it makes a lot of sense.

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Just curious if any of experiments tried to identify a brain region that compares the reality with something memorised.

I would assume that there is a mechanism in the brain that constatly compares (and works all the time) the real and memorised. For example, the room we live in we constantly compare with the most recent memory of it and we can notice something new in it. So there must be a “comparator” somewhere within the brain, comparing basic signals as well as grouped signas and concepts.

Is that hypocampus? Or something else?

I have experienced visual hallucinations like insects flying by, wile taking risperdal. I usually take it at night, so it happens at night maybe twice a year…
As antipsychotic reduces or eliminates hallucination, but i notice it can cause hallucination as well.

I have only had visual hallucinations of people in motor vehicles, so there’s no real confirmation on whether it is real or not…