What is the pathophysiology of motor dysfunction 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

When the blood supply to the cerebral peduncles arises from perforators of the P1 segment, infarction may occur, resulting in hemiplegia or hemiparesis. The clinical syndrome is no different from capsular infarction but often includes concomitant hemianopia because of occipital lobe involvement. The syndrome may mimic a large middle cerebral artery (MCA) infarction.


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