[Theta rhythms and positive bioccipital waves in the EEG during sleep].
Bioccipital theta rhythm and positive occipital sharp waves during sleep were observed in 46 of 192 neurologic patients. The age ranged of the patients between 15-54. The percentual incidence of this pattern (about 24%) was independent on the age. There was found a striking female preponderance in the young age group. The major symptom associated with this wave form were epileptic seizures (43%) and normocalcemic tetany (39%). 49% of patients had this EEG pattern as their single abnormality. In addition to this pattern 40% of them had also non-specific EEG abnormalities and 11% epileptic activity in their EEGs. No specific etiological factor was found in our patients.
D000293:Adolescent; D000328:Adult; D001930:Brain Injuries / Q000503:physiopathology; D004292:Dominance, Cerebral / Q000502:physiology; D004569:Electroencephalography / Q000379:methods*; D004827:Epilepsy / Q000503:physiopathology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009778:Occipital Lobe / Q000503:physiopathology*; D012894:Sleep Stages / Q000502:physiology*; D013746:Tetany / Q000503:physiopathology; D013826:Theta Rhythm
Theta-Rhythmen und positive biokzipitale Wellen im EEG während des Schlafes.