Evolution and Persistence of Torsional Downbeat Nystagmus in Lateral Medullary Infarction
نویسندگان
چکیده
منابع مشابه
Downbeat nystagmus due to a paramedian medullary lesion.
Cell groups of the paramedian tract, which are located in the paramedian region of the lower brainstem, are eye-movement-related neurons that project to the cerebellar flocculus. Their inactivation produces downbeat nystagmus, which resembles eye movement disorders resulting from lesions of the cerebellar flocculus in animal experiments. Therefore, paramedian tract cells are assumed to fulfill ...
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We report the case of a 76-year old lady under lithium carbonate for a bipolar disorder who presented with a suspected optic neuritis. A typical lithium-induced downbeat nystagmus was observed. Discontinuation of lithium therapy resulted in frank improvement in visual acuity and disappearance of the nystagmus.
متن کاملHead-shaking nystagmus in lateral medullary infarction: patterns and possible mechanisms.
OBJECTIVE Horizontal head shaking at 2 to 3 Hz can induce nystagmus in patients with central as well as in patients with peripheral vestibulopathy. However, the characteristics and diagnostic value of this post-head-shaking nystagmus (HSN) have not been studied systematically in central vestibulopathy, and little is known of the mechanisms involved. METHODS We analyzed spontaneous and HSN and...
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Background and Purpose—No large-scale study has ever compared the clinical and radiological features of lateral medullary infarction (LMI) and medial medullary infarction (MMI). The aim of this study was to investigate them through the use of cooperatively collected cases. Methods—Medical information on all patients from 1996 to 2000 with medullary infarction (MI) proven by brain MR images at 3...
متن کاملBowtie, Upbeat and Hemi-seesaw Nystagmus in Medial Medullary Infarction
Medial medullary infarction is characterized by contralateral paralysis of the arm and leg, contralateral loss of position and vibration sense, and an ipsilateral paralysis of the tongue. Rarely, upbeat nystagmus has been described. Bowtie nystagmus, which refers to oblique upbeat nystagmus with horizontal quick phases that alternate from right to left, has been reported in association with tob...
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ژورنال
عنوان ژورنال: Canadian Journal of Neurological Sciences / Journal Canadien des Sciences Neurologiques
سال: 2017
ISSN: 0317-1671,2057-0155
DOI: 10.1017/cjn.2017.34