 Methods: Routinely assessed aEEG data of preterm infants with IUGR born below 30 weeks of gestation in the years 2005 until 2007 were analysed retrospectively according to the aEEG score combining occurrence of sleep-wake-cycles, background activity and suspected seizure activity. Neurodevelopmental outcome was evaluated at 24 months using the Bayley Scales of Infant Development and standardized neurologic examination. 