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J Korean Bal Soc > Volume 4(1); 2005 > Article
Journal of the Korean Balance Society 2005;4(1): 49-52.
핵간안근마비에 동반된 충동성 시소안진
, , , , , 오경미1, 장재홍1, 박건우1, 이대희1, 최광동2, 김지수2
고려대학교 의과대학 신경과학교실1, 서울대학교 의과대학 신경과학교실2
Jerky Seesaw Nystagmus in Isolated Internuclear Ophthalmoplegia
Kyungmi Oh, Jae Hong Chang, Kun Woo Park, Dae Hie Lee, Kwang Dong Choi, Ji Soo Kim
1Department of Neurology, Korea University School of Medicine, Seoul, Korea.
2Department of Neurology, Seoul National University College of Medicine, Seongnam, Korea. jisookim@snu.ac.kr
The authors report jerky seesaw nystagmus, extorsional downbeating in the right eye and intorsional upbeating in the left eye, in a patient with right internuclear ophthalmoplegia (INO). This pattern of nystagmus may occur by disrupting pathways from contralateral posterior and anterior semicircular canals by a lesion in the medial longitudinal fasciculus. Depending on damage to the pathways from contralateral vertical canals, various patterns of dissociated torsional-vertical nystagmus may accompany INO.
Keywords: Seesaw nystagmus; Internuclear ophthalmoplegia
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