title: Epileptic activity during sleep and wakefulness.
abstract: In 23 untreated patients the temporal distribution of generalized spike-wave activity was investigated by means of mobile long-term EEG recordings. Distribution classes (S, A, W) were defined if the relative amount of epileptic activity within the phases sleep, awakening and waking exceeded a threshold, otherwise a diffuse distribution (D) was scored. A, S and D distributions were found approximately with the same frequency. In no patient was the middle part of the night most prominent. In one patient, it was shown by micro-hypnograms that 'micro-arousals' are closely related to spike-wave activity.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002940:Circadian Rhythm; D004569:Electroencephalography; D004827:Epilepsy / Q000150:complications / Q000503:physiopathology*; D006801:Humans; D008991:Monitoring, Physiologic; D012893:Sleep Wake Disorders / Q000209:etiology* / Q000503:physiopathology; D013997:Time Factors; D014851:Wakefulness / Q000502:physiology*