Journal
PSYCHIATRY AND CLINICAL NEUROSCIENCES
Volume 55, Issue 5, Pages 525-531Publisher
BLACKWELL PUBLISHING ASIA
DOI: 10.1046/j.1440-1819.2001.00900.x
Keywords
cerebrovascular disease; electroencephalogram; slow wave
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Sporadic temporal slow waves are considered to be associated with mild cerebrovascular dysfunction. However, electroencephalogram (EEG) changes have not been consistently described by some investigators and correlations inferred on the basis of such data remain inconclusive. In the present study, we examined previously defined temporal slow waves in patients in relation to incidence of cerebrovascular disease. A total of 512 EEG were analyzed during a 1 year period at our laboratory and 74 reference EEG from healthy volunteers were all examined as to the presence of temporal low-voltage irregular delta wave (TLID), temporal minor slow and sharp activity (TMSSA) or bursts of rhythmical temporal theta (BORTT). The patterns were assessed in relation to clinical histories of patients and controls. There were similarities in clinical correlations for the three EEG changes including associations with mild cerebrovascular diseases and with aging. In addition these temporal EEG findings shared electrographic features and showed left side predominance as well as correlating with each other. Since TLID, TMSSA and BORTT have many clinical and electrographical similarities, we consider that these findings should be grouped into one EEG entity which appears in association with mild cerebrovascular dysfunction.
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