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A Study of EEG Abnormalities in Normal Children
Author(s) -
Fukushima Yutaka,
Kawaguchi Susumu,
Ohsawa Takeshi,
Onuma Teiichi
Publication year - 1973
Publication title -
psychiatry and clinical neurosciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.609
H-Index - 74
eISSN - 1440-1819
pISSN - 1323-1316
DOI - 10.1111/j.1440-1819.1973.tb00087.x
Subject(s) - pediatrics , audiology , incidence (geometry) , electroencephalography , psychology , normality , abnormality , medicine , psychiatry , physics , optics
Summary Electroencephalograms of 315 children attending a regular primary school were investigated. Using the authors' criteria for normality, the subjects were classified into two groups: 126 normal children and the other 189 children (“questionable” group). At the first examination, the recordings were obtained on all of the subject during awaking and on 281 during sleep. Out of these 315 children the second examinations were done on 81 children. Periods between both examinations varied from six months to three years. Results: (1) Localized spikes or spike‐wave complexes (localized seizure discharges): The localized seizure discharges were seen in 27 children (9%). Surprisingly enough, the incidence of the discharges were higher in the normal children (12%) than in the “questionable” group (6%). (2) 14–6 c/sec positive spikes: The patterns were found in 57% of the total sleep records: 52% in the normal children and 60% in the “questionable” group. Among the latter, the children with behavioral problems (71%) and with positive past history of head injury (63%) showed the patterns more frequently. (3) The constancy of these findings: Regarding the constancy of appearance of the localized seizure discharges and of 14–6 c/sec positive spikes, the comparison was done on the first and the second records on the 81 cases. As the results, out of 10 cases with the localized seizure discharges at the first examinations, four did not show them at the second, and therefore the discharges does not seem to be constant in occurrence. On the other hand, 14–6 c/sec positive spikes tended to appear rather constantly not only in the “questionable” group but also in normal children.