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KMID : 0390320130230020057
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Chungbuk Medical Journal
2013 Volume.23 No. 2 p.57 ~ p.61
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Perverted headshaking nystagmus in paramedian pontine infarction
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Yang Se-Jin
Baek Shin-Hye
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Abstract
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Although several papers have been published on perverted head shaking nystagmus(PHSN) associated with focal brainstem or cerebellar lesion, there are a few report of a focal pontine infarction that cause PHSN. We report a patient with paramedian pontine infarction who presented sustained dizziness without limb dysmetria or weakness. Only vestibular abnormality was downbeat nystagmus(DBN) after vigorous head shakings. Region of pons contained medial longitudinal
fasciculus( MLF), the important pathway of DBN and velocity storage mechanism of vestibulocerebellum might be related to PHSN.
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KEYWORD
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PHSN, DBN, pontine infarctiondid
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