title: Intelligence and information processing during a visual search task in children: an event-related potential study.
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.
authors.affiliation: Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, PR China.
authors.forename: Qiong
authors.initials: Q
authors.lastname: Zhang
authors.forename: Jiannong
authors.initials: J
authors.lastname: Shi
authors.forename: Yuejia
authors.initials: Y
authors.lastname: Luo
authors.forename: Daheng
authors.initials: D
authors.lastname: Zhao
authors.forename: Jie
authors.initials: J
authors.lastname: Yang
mesh_terms: D001931:Brain Mapping; D002648:Child; D004566:Electrodes; D004569:Electroencephalography / Q000379:methods; D005071:Evoked Potentials / Q000502:physiology*; D005260:Female; D006801:Humans; D007360:Intelligence / Q000502:physiology*; D007361:Intelligence Tests / Q000706:statistics & numerical data; D008297:Male; D008606:Mental Processes / Q000502:physiology*; D009483:Neuropsychological Tests; D010775:Photic Stimulation / Q000379:methods; D011930:Reaction Time / Q000502:physiology