Experimental Observations in Postural Nystagmus I. Extensive Lesions in Posterior Vermis of the Cerebellum
| Autor: | George W. Allen, César Fernández |
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| Rok vydání: | 1960 |
| Předmět: | |
| Zdroj: | Acta Oto-Laryngologica. 51:2-14 |
| ISSN: | 1651-2251 0001-6489 |
| DOI: | 10.3109/00016486009124460 |
| Popis: | Ablation of the posterior vermis of the cerebellum was performed in the cat. Histologic controls showed that the lesion included pyramis, uvula and nodulus but tUber vermis and nuclei fastigii may be encroached upon. The result was a syndrome characterized by disequilibrium and postural nystagmus during the unstabilized period of cerebellar deficiency followed by compensation.The postural nystagmus was a typical “benign paroxysmal type” which appeared mainly in supine position and consistently was vertical toward the nose. It was fatigable after several repeated tests and disappeared in a few days or weeks, and it cannot be reproduced in bilateral labyrinthecto-mized animals.It was indicated that, i) the term “paroxysmal” identified the clinical syndrome but not the location of the cause which may be peripheral or central, ii) The term “benign” is confusing because it may imply that this type of postural nystagmus is limited to peripheral lesions with a mild course. iii) Disappearance of postural nystagmu... |
| Databáze: | OpenAIRE |
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