由于科学技术的发展,低出生体重儿的存活率较过去显著提高,其中相当比例为小于胎龄儿。据长期随访资料报道,其体格和智能发育均落后于适于胎龄儿。然对这种发育落后的病理生理基础所知甚少。近年各国广泛应用脑电分析技术来追踪神经系统异常情况的演变;在这方面,脑干听觉诱发电位(ABR)分析优于脑电图和皮层诱发电位分 Due to the development of science and technology, the survival rate of low birth weight children significantly increased compared with the past, a considerable proportion of less than gestational age children. According to long-term follow-up data reported that their physical and mental development are lagging behind for gestational age children. However, little is known about the pathophysiological basis of this development and backwardness. In recent years, EEG analysis has been widely used in various countries to track the evolution of abnormalities in the nervous system. In this regard, ABR analysis is superior to EEG and cortical evoked potentials