Patterns of dissociate torsional-vertical nystagmus in internuclear ophthalmoplegia

Title
Patterns of dissociate torsional-vertical nystagmus in internuclear ophthalmoplegia
Author(s)
이준Seong-Hae Jeong[Seong-Hae Jeong]Eung Kyu Kim[Eung Kyu Kim]kwang-Dong Choi[kwang-Dong Choi]Ji Soo Kim[Ji Soo Kim]
Keywords
SEE-SAW NYSTAGMUS; MEDIAL MEDULLARY INFARCTION; HEAD-SHAKING NYSTAGMUS; OCULAR TILT REACTION; EYE-MOVEMENTS; LONGITUDINAL FASCICULUS; VESTIBULOOCULAR REFLEX; VESTIBULAR NUCLEI; NEURONS; CAT
Issue Date
201109
Publisher
BLACKWELL SCIENCE PUBL
Citation
BASIC AND CLINICAL OCULAR MOTOR AND VESTIBULAR RESEARCH, v.1233, pp.271 - 278
Abstract
To explore the patterns and mechanisms of jerky seesaw nystagmus in internuclear ophthalmoplegia (INO), we analyzed the nystagmus patterns in 33 patients with dissociated torsional-vertical nystagmus and INO. In 11 (33%) patients, the nystagmus was ipsiversive torsional in both eyes with vertical components in the opposite directions. In contrast, 18 (55%) patients showed ipsiversive torsional nystagmus with a larger upbeat component in the contralesional eye. Four (12%) patients exhibited ipsiversive torsional nystagmus with a greater downbeat component in the ipsilesional eye. At least one component of contraversive ocular tilt reaction was associated in most patients (30/33, 91%). The patterns of jerky seesaw nystagmus in INO suggest a disruption of neural pathways from the contralateral vertical semicircular canals with or without concomitant damage to the fibers from the contralateral utricle in or near the medial longitudinal fasciculus.
URI
http://hdl.handle.net/YU.REPOSITORY/24619http://dx.doi.org/10.1111/j.1749-6632.2011.06155.x
ISSN
0077-8923
Appears in Collections:
의과대학 > 신경과학교실 > Articles
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