Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1984-7-13
pubmed:abstractText
Analysis of the optokinetic nystagmus has been one of the most important means to examine the function of the vestibulo-oculomotor system. Especially in Japan, it has been used as a mean to analyze the function of the brain stem. We investigated directional preponderance of the optokinetic nystagmus in supratentorial lesions especially unilateral lesions, in the cerebral hemisphere which had been nearly neglected as an object for investigation of the vestibular system. We examined 30 cases of unilateral lesion in the cerebral hemisphere. In all cases CT-scan confirmed that these lesions have no mass effect which might affect the function of the surrounding brain. It was also confirmed that these cases had no spontaneous nystagmus. These cases consisted of 11 cerebral infarctions, 9 cerebral thrombosis, 6 cerebral hemorrhages and 4 cerebral contusions. In the result, 27 cases showed directional preponderance of the optokinetic nystagmus to the ipsilateral side, while there was none to the contralateral side. Three cases showed no directional preponderance. Some cases showed marked inhibition of optokinetic nystagmus of the contralateral side. These markedly inhibited cases are very similar to cases of pontine lesion which usually manifest marked inhibition of the optokinetic nystagmus to the ipsilateral side.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:issn
0385-8146
pubmed:author
pubmed:issnType
Print
pubmed:volume
11
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1-9
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
1984
pubmed:articleTitle
Directional preponderance of optokinetic nystagmus. Study of 30 cases of unilateral cerebral lesions.
pubmed:publicationType
Journal Article, Case Reports