Development of chronic epilepsy after recurrent episodes of Posterior Reversible Encephalopathy Syndrome associated with Periodic Lateralized Epileptiform Discharges  Virginia Skiba, Mill Etienne, Joseph A. Miller  Seizure - European Journal of Epilepsy  Volume 20, Issue 1, Pages 93-95 (January 2011) DOI: 10.1016/j.seizure.2010.10.005 Copyright © 2010 Terms and Conditions

Fig. 1 Brain MRI (FLAIR) done during a typical PRES episode showing vasogenic edema in the parieto-occipital areas (A), resolved 3 months later (B). (C) A typical EEG obtained during an episode of PRES, demonstrating slowing of the background rhythm to 3–4Hz and posteriorly dominant independent bilateral PLEDs occurring at a frequency of about 1Hz. The two populations of PLEDs show distinct morphologies (with higher amplitude over the left hemisphere) and slightly different frequencies. Seizure - European Journal of Epilepsy 2011 20, 93-95DOI: (10.1016/j.seizure.2010.10.005) Copyright © 2010 Terms and Conditions