Objective To investigate the effect of amplitude integrated electroencephalogram( a EEG) on monitoring extrauterine life in healthy preterm infants with 28 to 36 weeks gestational age( GA). Methods The trail group was the preterm neonates without asphyxia,and the control group was the normal term neonates with GA over 37 weeks. Weekly a EEG recordings were performed on the trail group starting within 3 days after birth until discharged or up to 37 weeks postmenstrual age( PMA). In the control group,a EEG re...