DEVELOPMENTAL NEUROSCIENCEIntelligence and information processing during a visual search task in children: an event-related potential studyZhang, Qionga; Shi, Jiannonga; Luo, Yuejiaa; Zhao, Dahengb; Yang, JiecAuthor Information aKey Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences bBeijing No. 8 Middle School cBeijing Yihai Primary School, Beijing, PR China Correspondence and requests for reprints to Jiannong Shi, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, 10A Datun Road, Chaoyang District, 100101 Beijing, PR China Tel: +86 10 64854533; fax: +86 10 64872070; e-mail: email@example.com Sponsorship: This research was supported by National Natural Science Foundation of China Grant (No. 30370489) and Key Project of Knowledge Innovation Engineering of Chinese Academy of Sciences (No. KSCXZ-SW-211). Received 24 January 2006; accepted 20 February 2006 NeuroReport: May 15th, 2006 - Volume 17 - Issue 7 - p 747-752 doi: 10.1097/01.wnr.0000215774.46108.60 Buy SDC Metrics Abstract To investigate the differences in event-related potential parameters related to children's intelligence, we selected 15 individuals from an experimental class of intellectually gifted children and 13 intellectually average children as control to finish three types of visual search tasks (Chinese words, English letters and Arabic numbers). We recorded the electroencephalogram and calculated the peak latencies and amplitudes. Our results suggest comparatively increased P3 amplitudes and shorter P3 latencies in brighter individuals than in less intelligent individuals, but this expected neural efficiency effect interacted with task content. The differences were explained by a more spatially and temporally coordinated neural network for more intelligent children. © 2006 Lippincott Williams & Wilkins, Inc.