Electroencephalography demonstrating rhythmic frontocentral theta activity in a patient with Rett syndrome
Rhythmic frontocentral theta in a patient with Rett syndrome.
(A) Electroencephalography demonstrated a prominent 50 to 100 microvolts, 4 to 5 Hz rhythmic, fluctuating central theta rhythm (asterisk) during wakefulness.
(B) After tactile stimulation (line), a blocking phenomenon occurred (arrow), during which the central theta rhythm abated. All data are presented in longitudinal bipolar montage, sensitivity 7 microvolts/mm.
From: Weber AR, Ostendorf A. Teaching NeuroImages: A central theta EEG rhythm in Rett syndrome can masquerade as seizure. Neurology 2016; 87(3):e29-30. DOI:
10.1212/WNL.0000000000002866. Copyright © 2016 American Academy of Neurology. Reproduced with permission from Lippincott Williams & Wilkins. Unauthorized reproduction of this material is prohibited.