What is the pathophysiology of palinopsia, micropsia, and macropsia in posterior cerebral artery (PCA) stroke?

Updated: Jul 30, 2018
  • Author: Erek K Helseth, MD; Chief Editor: Helmi L Lutsep, MD  more...
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Answer

These are illusory phenomena that are of uncertain pathophysiology. Palinopsia describes the persistence of a visual image for several seconds to days in a partially blind hemifield. Micropsia and macropsia describe situations where objects appear smaller or larger than expected.


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