| A case of apogeotropic nystagmus with brainstem lesion: An implication for mechanism of central apogeotropic nystagmus. | |
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MedLine Citation:
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PMID: 20580172 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We report a case showing apogeotropic nystagmus with the lesion of the brain stem, and discuss a possible mechanism of central apogeotropic nystagmus. The case was a 73-year-old male. We analyzed his nystagmus three-dimensionally. He showed apogeotropic nystagmus. Axis angles of slow phase eye velocity of his apogeotropic nystagmus were not in line with the axes perpendicular to the plane of horizontal semicircular canals, but with the patient's vertical axis. We then found that his nystagmus including the apogeotropic nystagmus was positioning, but not positional and that the direction of his positioning nystagmus was the same direction of postrotatory nystagmus after his head movement. His MRI scans showed an infarction around the prepositus hypoglossi nucleus of the brain. His apogeotropic nystagmus seemed to consist of a combination of prolonged postrotatory nystagmus after his head rotation to the left and right lateral position because the axis of postrotatory nystamus was in line with the axis of the head rotation. Therefore, it is suggested that a possible mechanism of central apogeotropic nystagmus is a prolonged postrotatory nystagmus after his head movement in the supine position due to the brain lesion involving the velocity storage mechanisms. |
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Authors:
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Takao Imai; Arata Horii; Noriaki Takeda; Tadashi Kitahara; Kayoko Higashi-Shingai; Hidenori Inohara |
Publication Detail:
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Type: Case Reports; Comparative Study; Journal Article Date: 2010-06-26 |
Journal Detail:
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Title: Auris, nasus, larynx Volume: 37 ISSN: 1879-1476 ISO Abbreviation: Auris Nasus Larynx Publication Date: 2010 Dec |
Date Detail:
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Created Date: 2010-08-11 Completed Date: 2010-12-02 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7708170 Medline TA: Auris Nasus Larynx Country: Netherlands |
Other Details:
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Languages: eng Pagination: 742-6 Citation Subset: IM |
Copyright Information:
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Copyright (c) 2010 Elsevier Ireland Ltd. All rights reserved. |
Affiliation:
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Department of Otorhinolaryngology-Head and Neck Surgery, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita-shi, Osaka, Japan. imaitakao@hotmail.com |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aged Brain Stem / pathology* Cerebral Infarction / complications*, diagnosis* Eye Movements Head Movements Humans Magnetic Resonance Imaging Male Nystagmus, Pathologic / etiology*, pathology*, physiopathology Nystagmus, Physiologic Semicircular Canals / pathology Supine Position Time Factors Videotape Recording |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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