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Neuro-Ophthalmology Volume 22, 1999 - Issue 2
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Research Article

Ocular tilt reaction due to unilateral cerebellar lesion

Wang-kie Min Department of Neurology, Kyungpook National University Hospital, Jungkoo, Taegu, South Korea
,
Jong-yeol Kim Department of Neurology, Kyungpook National University Hospital, Jungkoo, Taegu, South Korea
,
Sung-pa Park Department of Neurology, Kyungpook National University Hospital, Jungkoo, Taegu, South Korea
&
Chung-kyu Suh Department of Neurology, Kyungpook National University Hospital, Jungkoo, Taegu, South Korea
Pages 81-85 | Published online: 08 Jul 2009
 
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Abstract

We report two patients with an ocular tilt reaction (OTR) due to unilateral caudal cerebellar lesion. One patient had a caudal cerebellar hemorrhage, the other a posterior inferior cerebellar artery territory infarct. There was head tilt in both patients which had not been reported previously. These findings support the previous proposal that the mechanism of a tonic contraversive OTR with unilateral cerebellar lesion is an increased tonic resting activity in the ipsilesional vestibular nucleus due to a loss of inhibition from the lesioned nodulus.

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