Clinic and Polyclinic for Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, Münster University Hospital, Münster, Germany.
Biol Psychol. 2011 Dec;88(2-3):161-9. doi: 10.1016/j.biopsycho.2011.07.004. Epub 2011 Jul 26.
Emotional cues motivate attention and modulate event-related potentials as well as magnetic fields in adults. Central components enhanced by emotional content are Early Posterior Negativity (EPN, 150-300 ms) and Late Positive Potential (LPP, >300 ms). Previous electroencephalography studies in children revealed a differentiation of the late component in response to emotional scenes, but failed to detect an EPN effect. Twenty-two children aged 8-10 years saw 200 arousing pleasant and non-arousing neutral pictures in a rapid serial visual presentation (RSVP) design, while event-related magnetic fields were recorded with whole-head magnetoencephalography (MEG). Analysis of MEG data based on individual picture ratings yielded LPP-m but also EPN-m effects with topography and latency resembling that of adults. Thus, the mechanism of motivated attention at early processing stages (>150 ms) appears mature in children of this age group.
情绪线索不仅能激发注意，还能调节与事件相关的电位和磁场，这在成年人中已有定论。情绪内容增强的主要成分包括早期后极负（EPN，150-300ms）和晚期正波（LPP，>300ms）。之前在儿童中进行的脑电图研究表明，在对情绪场景的反应中，晚期成分存在差异，但未能检测到 EPN 效应。22 名 8-10 岁的儿童在快速序列视觉呈现（RSVP）设计中观看了 200 张令人兴奋的愉快和不令人兴奋的中性图片，同时使用全头脑磁图（MEG）记录了与事件相关的磁场。基于个体图片评分的 MEG 数据分析产生了 LPP-m 效应，同时也产生了 EPN-m 效应，其拓扑和潜伏期与成人相似。因此，在这个年龄段的儿童中，早期加工阶段（>150ms）的动机注意机制似乎已经成熟。
