Micropsia

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Micropsia is a neurological condition affecting human visual perception, in which objects appear smaller than normal, and the subject bigger. It is the reverse of macropsia.

Micropsia can be caused by optical distortion of the image in the eye, or because of glasses, but it is most often be the result of a neurological dysfunction, in people with normal eyes.

Neurological causes of micropsia include migraines and (rarely) complex partial epilepsy. Temporary macropsia can be also caused by the actions of various psychoactive drugs, notably cannabis and magic mushrooms, in particular the Amanita muscaria mushroom, as referenced in Alice's Adventures in Wonderland. Drug-induced changes in perception subside as the chemical leaves the body. Occular conditions can also result in micropsia.

[edit] See also

• Macropsia
• Alice in Wonderland syndrome

[edit] External links

• Micropsia / Macropsia resource site