Patient characteristics.

Seizure frequency is given per month; Epilepsy history is defined as months passed since first seizure. Cognitive performance scores are presented as z-scores based on individual matched healthy controls. Also, cognitive performance is presented of the domains attention (Stroop test), executive functioning (Verbal Fluency test) and verbal memory (Visual Verbal Learning test). Abbreviations: AED  =  anti-epileptic drug; DNET  =  Dysembryoplastic Neoepithelial Tumor; MTS  =  Mesiotemporal Sclerosis; HEM  =  Hematoma; HAM  =  Hamartoma; DYS  =  Dysplasia.