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 Volume 65, Number 8, October 25, 2005
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NEUROLOGY 2005;65:1294-1298
© 2005 American Academy of Neurology
Brief Communications

Medial medullary infarction: Abnormal ocular motor findings

J. Soo Kim, MD, K. -D. Choi, MD, S. -Y. Oh, MD, S. -H. Park, MD, M. -K. Han, MD, B. -W. Yoon, MD and J. -K. Roh, MD

From the Department of Neurology, College of Medicine, Seoul National University, Seoul, Korea.

Address correspondence and reprint requests to Dr. Ji Soo Kim, Department of Neurology, College of Medicine, Seoul National University, Seoul National University Bundang Hospital, 300 Gumi-dong, Bundang-gu, Seongnam-si, Gyeonggi-do, 463-707, Korea; e-mail: jisookim{at}snu.ac.kr

In 20 consecutive patients with isolated medial medullary infarction, abnormal ocular motor findings included nystagmus (n = 8), ocular contrapulsion (n = 5), and contralesional ocular tilt reaction (n = 2). The nystagmus was ipsilesional (n = 4), gaze-evoked (n = 5), upbeating (n = 4), and hemiseesaw (n = 1). The ocular motor abnormalities may be explained by involvements of the nucleus prepositus hypoglossi, medial longitudinal fasciculus or efferent fibers from the vestibular nuclei, climbing fibers, and cells of the paramedian tracts.

Additional material related to this article can be found on the Neurology Web site. Go to www.neurology.org and scroll down the Table of Contents for the October 25 issue to find the title link for this article.

Supported by Korea Research Foundation Grant KRF-2004-003-E00202.

Disclosure: The authors report no conflicts of interest.

Received April 21, 2005. Accepted in final form June 28, 2005.






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