Transient global amnesia: clinical and electroencephalographic findings in 10 cases.
We studied 10 patients with transient global amnesia (TGA). Routine electroencephalograms (EEGs) were normal in six; two showed mild temporal lobe abnormalities, one had bitemporal delta activity with rare sharp waves, and one showed bioccipital rhythmic theta activity. Nasopharyngeal (NP) recordings were obtained in seven patients; five showed independent mesial temporal spike discharges during drug-induced sleep. The discharges are probably due to transient ischemia in deep temporal structures.
D000368:Aged; D000647:Amnesia / Q000503:physiopathology*; D003700:Delta Rhythm; D004292:Dominance, Cerebral / Q000502:physiology; D004569:Electroencephalography; D005071:Evoked Potentials; D005260:Female; D006801:Humans; D002546:Ischemic Attack, Transient / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D009778:Occipital Lobe / Q000503:physiopathology; D013702:Temporal Lobe / Q000503:physiopathology; D013826:Theta Rhythm