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ID 52428
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Title Alternative
Assessment of the brain function by evoked potentials: analysis of the late components of visual evoked potentials recorded from the vertex
Author
Yanagihara, Masafumi
Hayashi, Yuko
Abstract
Visual evoked potentials recorded from the vertex were studied in seventy four individuals with mental retardation,ranging from l old to 50 years old. They were classified into 4 groups according to the level of IQ/DQ,and the relation between the late components and the intellectual level was exarnined. In 9 of 74 cases(12.2%),la tency of the N130 component was prolonged and in 7 of 74 cases (9.6%),the P190 component was prolonged. There was,however,no correlation between the number of the cases with prolonged N130 or P190 latency and the level of IQ/DQ. Cases with prolongation in N130 and/or Pl90 were almost exclusively found among those with such complications as cerebral palsy and/or epilepsy,while few cases without complications showed prolongation. From these results,it is suggested that the prolongation in the late components developes reflecting the presence of the organic lesions that have a common causative potent producing cerebral palsy and/or epilepsy.
Keywords
brain function
mental retardation
visual evoked potentials
cerebral palsy
epilepsy
Published Date
2001
Publication Title
岡山大学教育学部研究集録
Publication Title Alternative
Bulletin of Faculty of Education, Okayama University
Volume
volume116
Issue
issue1
Publisher
岡山大学教育学部
Publisher Alternative
Faculty of Education, Okayama University
Start Page
91
End Page
95
ISSN
0471-4008
NCID
AN00032875
Content Type
Departmental Bulletin Paper
language
日本語
File Version
publisher
Refereed
False
Eprints Journal Name
bgeou