Transient Upbeat Nystagmus Due to Unilateral Pontine Infarction.
- Author:
Seung Chul LEE
1
;
Ha Neul LEE
;
Wooyoung JANG
;
Seong Ho KOH
;
Kyu Yong LEE
;
Young Joo LEE
Author Information
1. Department of Neurology, College of Medicine, Hanyang University, Guri, Korea. ksh213@hanyang.ac.kr
- Publication Type:Case Report
- Keywords:
Upbeat nystagmus;
Unilateral pontine infarction
- MeSH:
Humans;
Infarction*;
Mesencephalon;
Reflex;
Running
- From:Journal of the Korean Neurological Association
2007;25(3):426-429
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
Upbeat nystagmus has been described in bilateral lesions of the medulla, the ventral tegmentum, the anterior cerebellar vermis, the adjacent brachium conjunctivum, and the midbrain. Imbalance of the vertical vestibulo- ocular reflex (VOR) favoring the downward VOR activity would therefore result in upbeat nystagmus. We report a patient with transient upbeat nystagmus due to unilateral pontine infarction that may have disrupted bilateral upward VOR pathways running in the ventral tegmental tracts.
