Reading performance in children with rolandic epilepsy correlates with nocturnal epileptiform activity, but not with epileptiform activity while awake

► Twenty-six children with rolandic epilepsy and/or rolandic spikes were analyzed. ► A 24-hour electroencephalogram was obtained and a neuropsychological assessment performed within 2 weeks. ► There was a negative correlation between amount of nocturnal epileptiform activity and reading sentences. ► There was a negative correlation between amount of nocturnal epileptiform activity and Verbal IQ.